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Electrical Wiring in the Home/Questions Answered by Expert J Cook

SubjectDate Asked
home wiring1/11/2012
  Q: We have two lights in our vestibule that now don't work. It could be that my wife was using a home ...
  A: Being in the vestibule it may be on a circuit with an outdoor GFI receptacle. Check all outdoor ...
Circuit breaker1/6/2012
  Q: I have a breaker that tripped and when I try to reset it, it sparks..... any sugestions? I have ...
  A: There has to be something on this circuit that has shorted out. Trace the dead circuit and unplug or ...
groundfault outlet12/17/2011
  Q: In my garage I have a 15 amp breaker at the panal which controls two outdoor recepticals and one ...
  A: According to electrical code, you are correct. With a 20 amp receptacle a 20 amp device could be ...
Sub-panel exit wiring12/2/2011
  Q: I'm installing an outdoor (3R) load center. (I've done interior subpanels before, but not outdoor.) ...
  A: Wiring troughs are common, you could use one large conduit to penetrate into the wall and run all 4 ...
capacitor change11/7/2011
  Q: Our water motor pump at home stopped working. My dad suspected the problem was the capacitor as it ...
  A: That would be an engineering question that I am not comfortable answering. I know the engineers ...
240 volt drops when dryer turns on11/3/2011
  Q: I have 240 volts to the connection at the dryer (red and black wire). I have 120 on each wire when ...
  A: I am not positive this is the case, but this is a common mistake when checking for 240 volts. You ...
installing 240a electric heaters11/2/2011
  Q: I have a barn that is new but is being changed to a residence. I have a 200a service now and want ...
  A: The formula is watts divided by voltage = amps, so 2250 watts divided by 240 ...
Dimmer problem10/10/2011
  Q: I bought my home new 12 years ago. The builder installed a ceiling fan in the master bedroom. I had ...
  A: If the fan operates, I would not suspect incorrect wiring. I more feel the fan motor may have wear ...
backup generator connection to transfer switch10/8/2011
  Q: I purchased a 6-circuit Reliance generator transfer switch. The input for the generator transfer ...
  A: The formula to see the capacity of any electrical device is: WATTS DIVIDED ...
wiring for generator to panel.9/27/2011
  Q: I have purchased a kohler 20kw home standby generator with a 200 amp transfer switch. What size ...
  A: There are many variables in play. Does the generator have a main breaker? If so, the wiring must be ...
Sub panel wiring9/25/2011
  Q: This is more than a little strange - I'm familiar with electrical wiring, but by no means an expert. ...
  A: The 240 volt devices would have worked fine as they do not require a ground or neutral to operate, ...
window unit a/c /heater9/24/2011
  Q: i recently purchased a new window unit a/c with heat from sears its a kenmore 18500 btu..i looked at ...
  A: The reason for different sizes is directly related to the amps they are rated for. Be sure the ...
electrical wiring9/23/2011
  Q: How do i get power out to a small addition for 5 receptacles, when there are no spaces left in the ...
  A: There are several ways you can do this. The most expensive would be to take two breakers out and use ...
Wiring Meter to Panel9/22/2011
  Q: OK, here's the deal. I need to run Power in MN from Meter on Pole, 75ft to my Panel inside my house. ...
  A: According to the code table for UF direct buried, you would need 250 copper as 4/0 is only rated for ...
Wolf Tanning Bed Power and Control9/21/2011
  Q: J Cook, I've got a Wolf tanning bed calling for no more than 230VAC. At the dryer outlet we are ...
  A: Unless this is a totally unique item, every electrical device, motor, control, etc. I have ever seen ...
Ceiling Fan Remote Installation9/13/2011
  Q: See attachment. I am replacing a ceiling fan that is controlled by 2 wall switches (1 for fan and 1 ...
  A: Without knowing how the original fan was wired, I would assume there is a black wire, the normal hot ...
electric9/10/2011
  Q: my ac has stopped working, when I turn power off just to the ac I lose power to a couple of ...
  A: I am suspecting you have a locked up compressor. The high amp draw on a locked up compressor will ...
circuit breakers8/30/2011
  Q: I am wiring a cabin in Colorado and it was suggested that the state requires arc type circuit ...
  A: Steven I am in NC and I know any local inspector can overide and demand a higher protection in any ...
Changing a pull fan to a chandelier8/26/2011
  Q: I have a really ugly fan over my dining table. I would like to replace it with a chandelier, but it ...
  A: Actually I did a similar thing as I have a 100+ year old home. I rewired everything I could get to ...
wiring through home 2nd story8/15/2011
  Q: Do you know of any techniques or tools for wiring / running av cables through a fairly new home ...
  A: It seems every home today is constructed a little differently. It is not like the 100 year old home ...
electricity8/12/2011
  Q: I have a microwave and TV in my kitchen, both connected to the same wall outlet. Both of them ...
  A: The two together should not cause any overloading problems, however the microwave can pull enough on ...
nail in wire7/30/2011
  Q: I suspect that when siding was put on an addition to my house, a nail nicked an electrical wire. ...
  A: You may be able to determine the piercing nail using a voltmeter and checking varying points along ...
Provider / B Box / Lines6/30/2011
  Q: Our lights tend to flicker in the morning when everyone is waking up and creating a large demand ...
  A: From your information, it appears your home has an inadequate service. Has the electrical service ...
Electrical Wiring6/18/2011
  Q: I am trying to replace the thermostat to our central heat and air. My husband started the job, but ...
  A: The thermostat operates on 24 volts supplied by a transformer in the indoor unit. Being this old, ...
Light switch6/16/2011
  Q: I have a light switch that controls 4 lights. I want to add another light switch to the right of ...
  A: In many cases there is not a neutral wire in the light switch junction box, so it could not be done. ...
Wiring new exhaust fan separate from vanity light5/26/2011
  Q: I replaced the bathroom exhaust fan from a builder's grade to a better one. They both have lights. ...
  A: There should be different color wires for the fan and the two lights. With the breaker to the ...
copper wiring5/19/2011
  Q: Can you please tell me when copper wiring was introduced to Mobile Homes, I have a 1983 mobile home ...
  A: This varied by manufacturer, and this was in the middle of the years there was so much controversy ...
wiring a new 230v breaker+outlet5/10/2011
  Q: How many hot and ground, neural wires are left for a typical 4 year old house to wire into a new ...
  A: The only way to know is to open the panel and see what is available. Panelboards can have as few as ...
wire 14/2 w / g5/6/2011
  Q: Can i put a 14/2 w/g onto a 20 amp breaker
  A: No. #14 is only rated for 15 amps, so you would have to use a 15 amp breaker. I always use #12 so I ...
Open Neutral5/5/2011
  Q: Recently, I woke up one morning and my kitchen lights and a wall outlet wouldn't work so I began ...
  A: This indicates that there is either a loose connection with the neutral somewhere in the circuit, or ...
240 volt, single phase circuit pulled from 120/208 3 phase panel?4/19/2011
  Q: I work as an industrial maintenance technician and need to run a circuit to supply a piece of ...
  A: Yes this is normal, the transformer on 480 volts pulls very little even with a full load on the ...
Electrical wiring4/7/2011
  Q: 1. Can you show me the electrical wiring for a window air conditioner system and heater (best with ...
  A: There is no way to make a generic wiring diagram. If you have the manufacturer and unit model and ...
1/2"conduit and switch box3/29/2011
  Q: I'm trying to run lights in the basement , total of 18 65 WATS each , there is 2 separate line on ...
  A: The formula to determine the total amps is: Watts divided by volts = amps So in ...
30 amp outlet to storage shed3/28/2011
  Q: It is currently in place, 30 amp breaker, 10/2 ( maybe 10/3? ) Was the three pronged standard drier ...
  A: Now another item is in play, a breaker box. When a panel or a sub panel in this case is installed ...
30 amp outlet to storage shed3/27/2011
  Q: It is currently in place, 30 amp breaker, 10/2 ( maybe 10/3? ) Was the three pronged standard drier ...
  A: For this length of a run, I would continue the #10 wire all the way to the shed and as you stated ...
Lamp switch causing short3/1/2011
  Q: I have rewired an old lamp. It had a toggle switch attached. When I tested the light without the ...
  A: If you replaced the switch, it has to be the wiring. From the socket, the attaching cord will have a ...
volts per meter2/28/2011
  Q: i measure the voltage in my house with a volts per meter measurement and with everything unplugged ...
  A: Every incoming service has one conductor called a neutral. This conductor is connected to an earth ...
volts per meter2/26/2011
  Q: i measure the voltage in my house with a volts per meter measurement and with everything unplugged ...
  A: You could have varying voltage readings depending on what the neutral is picking up. A neutral close ...
3way switch with dimmer2/25/2011
  Q: I have a living room fan with light, which is connected to a 3 way switch. One of the switches is a ...
  A: From the description, it still sounds like the dimmer. The only component in a fan/light combo that ...
burners in a ge model # jbs55wok4ww2/24/2011
  Q: i replaced 2 burners (when looking front to back) the left rear and left front. i have the wires ...
  A: I do not have a wiring diagram for this unit. A way you can determine which ones are front and rear ...
125 amp breaker box2/15/2011
  Q: im wiring a small building i got a 200 amp main service pole an a 125 inside breaker box i have a ...
  A: A 125 amp service will more than handle what you have described so far. Everything is very unlikely ...
Power Bill Explaination2/12/2011
  Q: My daughter lives in a two story townhouse here in Atlanta. 3500 Sq. Her power bills are very high ...
  A: If this service is as most services, over 250 amps is considerd a commercial services and the rates ...
doorbell ringer help2/11/2011
  Q: I have a faulty doorbell ringer. Voltage going into transformer is good. voltage coming out of low ...
  A: There appear to be a transformer problem. The transformer is not putting out enough low voltage. A ...
doorbell ringer help2/1/2011
  Q: I have a faulty doorbell ringer. Voltage going into transformer is good. voltage coming out of low ...
  A: Yes you are correct. Low voltage is exactly like high voltage. Either of the low voltage wires can ...
Square D QO 200Amp circuit breaker1/31/2011
  Q: New installation of Square D CB pnl.Power has not been turned on from service pole yet. On the in ...
  A: There is a lock mechanism to prevent it from being accidentally turned off. I am not saying there is ...
THERMOSTAT WIRING1/29/2011
  Q: I am installing a Honeywell Thermostat. My old system has a W2 and E. In the new thermostat it is ...
  A: The first inquiry did not mention the propane furnace and with this addition, you are correct. The ...
THERMOSTAT WIRING1/28/2011
  Q: I am installing a Honeywell Thermostat. My old system has a W2 and E. In the new thermostat it is ...
  A: Some commercial units have two compressors. The second would be connected to the W2 terminal and the ...
monitor usage1/27/2011
  Q: I need to know how many amps my 240vac motor is pulling when I turn it on.Thanks ...
  A: There are a number of factors that determine the start amps. I will need the motor codes, single or ...
Power outage triggers observatory roof closure1/18/2011
  Q: I am designing a simplified roll-off roof observatory to put my telescope in. The roof will open and ...
  A: The problem I see is the UPS will engergize the controls telling the door to close, but unless it is ...
Main Breaker & PV Source Breaker1/16/2011
  Q: I'm adding roof-mounted solar power to my residence. I've determined that my home run will terminate ...
  A: Depending on how an inspector interprets the code, reducing the main to a 175 still does not change ...
ground wire1/14/2011
  Q: to the ceiling of a storage room. To the fixture I will run a length of power cord that I salvaged ...
  A: No, it is actually called a double insulated product, it is common in residential tools such as a ...
breaker box/ circuit breaker main12/7/2010
  Q: I was using my washer and when it changed to spin there was a surge and the lights flickered and ...
  A: A loose connection would cause exactly what you have described. If the loose connection was found ...
dryer12/2/2010
  Q: three rooms in my house has no power unless the dryer is on. What is wrong
  A: There are some serious circuit problems that could eventually cause a fire. You need to have an ...
Main line arch11/24/2010
  Q: Mr. Cook I live in a mobile home and the other day my wife noticed that the inside panel box was ...
  A: With the amount of arching that was happening, it is very possible it has damaged the main breaker ...
220 volt shut off switch.11/23/2010
  Q: I have three 10 gauge wires running between my circuit breaker box & the pressure switch on my 220 ...
  A: Install a single pole single throw 20 amp switch and connect one wire to each terminal and run these ...
Wiring an Exhaust fan with a combination two single pole switch11/17/2010
  Q: How do I wire an exhaust fan into a combination two single pole switch? Currently, I only have a ...
  A: It will take a separate wire from the fan to the existing switch box. The wires coming in from the ...
electrical wiring11/16/2010
  Q: I am trying to hook up a chandelier. I have 3 sets of wires in the box- 3 white wires with cap, one ...
  A: The orange and silver do not make sense. Get a volt tester and turn the switch on and off to see it ...
cord ends don't match up11/15/2010
  Q: I am putting up Xmas lights outside and have a problem. The female end of the LCD lights has two ...
  A: Are you certain these are outdoor lights. It sounds as though they do not have a ground if both ...
Only some lights on the breaker are working.11/12/2010
  Q: After installing a dimmer switch in my dining room I flipped the breaker back on. Sadly the dimmer ...
  A: I would have to believe the circuit fed through this switch box and on to the other devices that are ...
No power to bedroom11/10/2010
  Q: I have no power to one bedroom. Checked breaker box and there are no breakers tripped. I flipped ...
  A: The GFI is the most likely culprit, they do fail. I know you checked the wiring for a loose ...
240 V vs 120V wire for motor11/9/2010
  Q: 1. Why does 120V need a neutral wire, but 240V doesn't? 2. Other than two wires sharing the ...
  A: In essence any electrical device is operating as a controlled dead short. Two legs are hitting each ...
Neurtal and groung bar installation8/31/2010
  Q: I am buying a house that has had the wiring stolen from out of it. They also took the grounding ...
  A: It is difficult to tell by the photo. Some ground bars are located on the sides, bottom, or top. ...
How to wire a 3 way switch and single pole switch using single power source8/30/2010
  Q: Greetings: I have a 3 way switch for my recessed lights with power at the switch. I want to add a ...
  A: From the 14/2 power wire, connect two black jumpers to the black and two white jumpers to the ...
Heater and Outlet wiring8/28/2010
  Q: I have a bathroom wall heater wired into another outlet into another bathroom. It apprears to be a ...
  A: When a device is operating on the circuit, it is common to also read voltage on the white neutral of ...
voltage on electrical base board heater8/27/2010
  Q: What should be the voltage reading on a base board heater at the end of a run controlled by a low ...
  A: I am not sure if you are referring to the line voltage of the heater or the control circuit. ...
Service cable8/26/2010
  Q: New home install. I have a remote meterbase/200 amp disconnect. Need to run URD from there to house ...
  A: If the meter is 6' or less from the indoor panel, conduit can be ran directly to the panel from the ...
Light switch and fixture8/14/2010
  Q: We have a light switch to a florescent light in our kitchen. I heard a crackling several times when ...
  A: If the sounds were from the switch, it most likely will fix it with a new switch. Make sure the ...
hard-wiring short?!8/13/2010
  Q: Last night I had my fan/light on as well as my bathroom light (master bedroom) - fuse blew. I tried ...
  A: No, was the switch to the fan and light also off when you tried to reset the breaker? If so, then ...
bathroom fan7/31/2010
  Q: Cook! I have the bathroom fan connected to the light switch and every time I want to put the fan on ...
  A: With the fan and light on the same switch circuit, it will require an additional wire to the fan. ...
wiring instructions for an outdoor motion light7/29/2010
  Q: I have misplaced the wiring directions for my outdoor motion sensor light.  There are 1 white & 1 ...
  A: Kurt, the only wire I am having a problem with is the white wire with a black stripe on the sensor. ...
100 amp service vs 200 amp panel7/20/2010
  Q: My father has an older home that the "main" panel (which is in the garage) is a 100 amp panel. this ...
  A: The panel inside the house should be fed from a breaker in the garage panel, the rating of this ...
replacing standard outlet with gfci outlet7/18/2010
  Q: The current standard outlet has 6 wires (3 pairs) coming into it. 4 going into hole type pressure ...
  A: It depends on whether you want to protect only the GFI location, or do you want to protect the ...
Switch controlling light and outlets7/16/2010
  Q: We have a switch in our office that is wired to control two outlets in addition to the overhead ...
  A: Since you solved the receptacles, the light will have a white and a black. The white will connect ...
electrical wiring7/15/2010
  Q: I have a light switch that has red, black, white wires, the wires run up to 2 light fixtures that ...
  A: According to your description, the BOX on the side of one light has the incoming power circuit. I do ...
ceiling fixture wiring6/16/2010
  Q: I have a ceiling fixture that keeps blowing out lightbulbs after just a few days after i hung a new ...
  A: At the switch, you are stating THE black is attached on one side of the switch but at the ceiling ...
120/240 sub panel wiring6/4/2010
  Q: I have a Square D 60 A 3 circuit/3 space enclosed panelboard. I want to install 1 15 AMP DPST and 1 ...
  A: If you look carefully at the connection points for the breakers, every other one is the opposite ...
Wiring a switch, FGCI and receptacles6/3/2010
  Q: This is what I have: Power is going into the switch, have the 12-2 to the light then the 12-2 to ...
  A: Michael, everything sounds correct. The only thing I can suggest checking is the GFI has a ...
Light Switch Question5/20/2010
  Q: I am replacing some light switches in my home with lighted toggle switches. The are 2 sconces ...
  A: First, make sure you have the correct switches. A three pole or four pole is not necessarily a three ...
ceiling fans and wire colors5/11/2010
  Q: I am replacing a ceiling fan. I never thought that I would have a case where the NEW fan wiring ...
  A: It would help considerably to know on the old fan what color of circuit wires the old one is ...
running wiring to a outside shed5/8/2010
  Q: i have a 40 amp breaker in my main electrical box that was used for a electric dryer,can i use this ...
  A: It depends on the distance of the run. You will still need wire and connectors etc. and by using ...
switch for ceiling gan5/7/2010
  Q: wired a wall switch for new ceiling fan. When switch is off, volt meter shows 33 volts at supply for ...
  A: George, I could not access the diagram. I will give you two methods depending on what you have. 1. ...
Photocell4/29/2010
  Q: I want to install indoor stair lighting and night lights in my hallway. I would like to put them on ...
  A: You will either have to run a 14/3 or an additional 14/2 that will be going to the light circuit. ...
Light Switch Replacement with Gfci outlet/Switch3/30/2010
  Q: I just purchased an older home. The upstairs bathroom has only a light switch. I purchased a GFCI ...
  A: Sorry for the delay Kevin, I was not sent the question until this morning. I am not sure about the ...
Turn outlet off of power switch3/29/2010
  Q: I need help with our outlet that is controlled by our light switch. I can not use the outlet without ...
  A: You just need a standard receptacle. Check to see what amp breaker is feeding this circuit, it is ...
Uneven voltage in each leg of sub panel3/28/2010
  Q: A 20 amp double pole breaker feeds a sub panel in my shop through overhead wires. Each leg of this ...
  A: There has to be a problem with the wire from the main to the sub panel to get this reading at the ...
Uneven voltage in each leg of sub panel3/27/2010
  Q: A 20 amp double pole breaker feeds a sub panel in my shop through overhead wires. Each leg of this ...
  A: Scott, I am not sure how you are reading the voltage, but there are two ways to do it properly. One ...
wire or circuit problem?3/26/2010
  Q: My outside electrical receptacle is on a GFCI circuit. Took the face plate off, with a multi meter ...
  A: With a hot circuit, you will read 120 volts between either the neutral and hot or the ground and ...
using my european stereo in US3/25/2010
  Q: I brought my mini Sony stereo back to the US with me. It does have a 50/60 width but I am not able ...
  A: I would check with Sony. It is now wired for the 220 voltage in Europe and it depends on how it is ...
Halogen pot light outage3/16/2010
  Q: I have six halogen lights in the bedroom ceiling. These are original equipment in a house built in ...
  A: Usually a voltage spike is the only thing that will damage a transformer. They are ususally very ...
seperate structure3/15/2010
  Q: i have a shed about 100' from house and want a sub panel out there for circuits plus future pool and ...
  A: The feeders will totally be determined by the loads you want to attach. Figure out the total load ...
High electric bill3/14/2010
  Q: Could I reduce my electric bill by turning the main breaker off every night? Total electric home. ...
  A: Some tips for saving are: 1. Install a programmable thermostat to put the unit in an unoccupied mode ...
WIRING A TIMER SWITCH2/15/2010
  Q: HEY HOW R U TODAY, I GOT A PASS%SEYMOUR 7 BUTTON SINGLE POLE TIMER SWITCH, THAT I WOULD LIKE TO ...
  A: The original switch did not have a neutral wire. The present white wire that was attached is part of ...
moving a switch2/14/2010
  Q: I have taken out a wall in my bathroom and need to move the switch for the exhaust fan/light to the ...
  A: By the explained wiring, you do not have separate wires from the light and the fan, one black wire ...
Wiring a gas cooktop2/12/2010
  Q: "I'm reinstalling a gas cooktop (110V) after we replaced our countertops. No problem with the gas - ...
  A: It appears the wiring was originally a 240 volt circuit by having a black and a red. You will need a ...
220 volt wiring2/3/2010
  Q: can I junction 220v to run an air compressor and welder off of the same line.
  A: Dustin it depends on the rating of the circuit and if both will operate at the same time. If only ...
Fuse Box Nuetral Bar with High Temperature2/2/2010
  Q: I am preparing a 1969 house for sale. The house has aluminum wiring, a fuse box with a master fuse ...
  A: If this home still has screw in fuses, it is very likely the service is now underated. With the ...
floodlight wiring problem1/29/2010
  Q: I have an outdoor floodlight that recently started tripping a breaker on my electrical panel. The ...
  A: The white wire is the neutral and must be connected to the proper terminal or white wire of the ...
2 prong electrical plug1/28/2010
  Q: My vacuum sweeper has quick working. When I plug it in it momentarily starts and then stops. One ...
  A: Any male plug can be installed even a grounded type since it is grounded internally and does not use ...
converting european 220v outlet to 110v outlet1/22/2010
  Q: I moved to Belgium and I want to change the outlet plugs to accomodate all my tools. How do I ...
  A: It will not be a matter of converting the outlet. In Europe, where we use a single 120 volt line ...
A.O.Smith Blower Fan motor wiring1/14/2010
  Q: I have an old furnace that had a Westinghouse single speed. 1050 rpm motor. It overheats and quits, ...
  A: The wiring diagram should be either on the motor, or on the cover that is removed to connect the ...
GFI tripped, wiring is two-wire1/13/2010
  Q: My son recently bought an old house. The GFI in the bathroom tripped. The wiring to it is just a ...
  A: Dave, actually with two wire circuits, there is a neutral, but no ground. This being the case, be ...
Christmas lights tripping every circuit12/20/2009
  Q: we have approximately 35 strands of 100 mini lights and icicle lights in our yard along with light ...
  A: The dampness is most likely the culprit. You are connecting the lights to a circuit that is GFI ...
Cooktop & Wall Oven electrical connection12/19/2009
  Q: I am replacing a range, with a single wall-oven and a cooktop. The wall breaker for the range show ...
  A: If I see this correctly, the oven and the cooktop needs a 40 amp circuit. The existing circuit needs ...
Automatic Switch for Water Heater12/18/2009
  Q: My utility has just introducted time of day electric rates. I get a break for power used at certain ...
  A: If you go to most electrical supply or HVAC supply stores, most will have a 240 volt time clock with ...
adding an exterior outled12/17/2009
  Q: what is the best way to fish a new circuit from an attic down an exterior wall to a new exterior ...
  A: With the walls having a fire block, it is almost impossible to do this. You may be able to go ...
space heaters12/8/2009
  Q: My mother is having difficulty getting my father to take seriously the danger of their bedroom space ...
  A: It most certainly is cause for concern. A circuit is pulling hard when the lights dim. It can cause ...
94samaya12/5/2009
  Q: I live in New England and just installed a new dedicated GFCI line for my main bathroom (the ...
  A: The older light will probably cause problems with the GFI, so this method does not have the light ...
Electric wiring12/2/2009
  Q: Currently have a single pole light switch run as the last of the run from the breaker. How can I ...
  A: Identify the hot feeder wire and add a small piece of wire to it and run it to the new switch on ...
voltage reading in one circuit11/20/2009
  Q: I recently purchased a fixer-upper, and found four outlets (all isolated to a single 15A breaker) ...
  A: Assuming this was a working circuit at one time, there has to be a section of damaged wire allowing ...
Ceiling Fixture Wiring11/19/2009
  Q: U resolved a similar problem to mine already. Unfortunately his problem only had two main wires ...
  A: There is most likely a circuit feeding through this junction and also a drop down switch leg. Do you ...
New electric range11/18/2009
  Q: We wanted to replace our gas range with an electric range and we want to know if we have the right ...
  A: Very excessive. Locate the breaker feeding this receptacle to ensure it is of the proper amps for ...
3-stage touch light swich not responding11/15/2009
  Q: I have installed 4 sets of 5 low voltage xenon lights each in my house. The switches are round ...
  A: You need to check the rating on the switches. You may have overloaded them with the number of lights ...
installing a subpanel11/14/2009
  Q: my garage is currently wired with an electric stove plug. We do not want a stove in the garage but ...
  A: The most common and thus usually the least expensive sub panel is a 125 amp main lug without a main. ...
need to know11/11/2009
  Q: can i feed 3 subs off of 1 main
  A: Just as there is no limit to the number of receptacles on a circuit, there is no limit to the number ...
nutral wires hot11/10/2009
  Q: Plugged in a lamp blew the bulb, knocked out outlets and lights on circuit. Took the outlet out ...
  A: There is either a damaged device on the circuit, or the wiring itself. I would start at the breaker ...
Electric11/6/2009
  Q: I am installing Recess lighting in our basement, I have a ceiling with a foot and half space with no ...
  A: You can " Daisy Chain " from light to light. The calculation to determine how many on one circuit ...
UPS over load9/17/2009
  Q: I face probelm during comissioning of one project , and I hope that I will find answer here. My ...
  A: I apologize for the delay, but I am out of work on a work related injury and had surgery. As to this ...
grounding 200a electric service9/16/2009
  Q: i know that now you need two ground rods,but how big of a wire& how do you run the wire? THANK ...
  A: You only need two if the ground does not have sufficient impedence verified by a meter on one driven ...
ceiling fan installation6/17/2009
  Q: My wife and I just purchased an older lake cottage. I have a ceiling fan with lights that came out ...
  A: This should have been correct. You will need to purchase a volt tester from a home supply. It is ...
Amps/watts, single or three phase, & 220 wiring...6/3/2009
  Q: I want to put a ceramics kiln in my basement. The kilns I'm in the market for usually require ...
  A: On the high end, at 220 volts, a 14,300 watt device needs a 65 amp circuit. The formula is watts ...
Light On in Off position.6/2/2009
  Q: I recently bought a new light fixture to go in my dinning room where a ceiling fan was. I was able ...
  A: One of the cables with a black, white and ground is the power cable, the other is the switch leg. ...
3 Phase air compressor switch6/1/2009
  Q: Can you explain where to connect the 2 wires coming from the air pressure switch. This is an 80 ...
  A: David, on this type of device there should be a disconnect at the compressor installed that is ...
Electrical Connection for a Freestanding Range5/28/2009
  Q: We recently had a new range installed. Before we could connect it, we had to change the connector ...
  A: It is just a different more modern design in most cases. It could also indicate a different amp ...
230 to 1155/27/2009
  Q: downgrading 230 volts to 115 volts service how is been done
  A: To convert a 230 volt circuit to 115, the double breaker has to be removed and two single breakers ...
Wiring???5/19/2009
  Q: How do you a switch to a separate light from another switch?
  A: If the switch does not have the neutral in the junction box, you can't. Most switches are dropped ...
Garage Door Opener pre-wire5/17/2009
  Q: I am trying to install the control box for the garage door opener. It has only two terminals for ...
  A: Every manufacturer has their own terminals for the opener connection. The wires you have found are ...
properly testing new work5/15/2009
  Q: Mr. Cook, In a basement remodel, we have a new circuit breaker which goes to a newly installed gfci ...
  A: You would actually have to create a dead short to test the breaker, so I do not recommend this. With ...
Sub-panel5/13/2009
  Q: I was wondering if you could explain how sub-panels are used in residential applications. Are they ...
  A: The number of breakers has nothing to do with the load capacity of the service. Counting all of my ...
electric5/11/2009
  Q: metal sheathed cable, 10/3 can the metal sheath be used as ground (with metal box)so I can wire 3 ...
  A: Certain cables can use the sheath in certain jurisdictions. I would check with a local electrical ...
Sub-panel5/10/2009
  Q: I was wondering if you could explain how sub-panels are used in residential applications. Are they ...
  A: In you case it would be a matter of preference, but I would install one and have in my own home with ...
electrical5/9/2009
  Q: I have 2 questions, hope this is OK. 1-I am replacing new outlet plugs in my home. I am getting a ...
  A: The idea of the foam in the boxes is an excellent way to seal off drafts. There are foam gaskets ...
gfi5/7/2009
  Q: I'm installing a GFI in one of our to bathrooms. Before I started I had power to outlet. Now that ...
  A: Jason you will have to follow the devices on this circuit. It may already have another GFI on it ...
electrical5/6/2009
  Q: i have to install a new 220 outlet, run the wire to the breaker box. I already have a breaker box ...
  A: You would treat the sub panel just like an extended circuit. Remove two existing breakers, install ...
Replacing outlets and switches5/5/2009
  Q: My dad is an electrician, and I've been helping him on a job over last Christmas break, so I know a ...
  A: Not as long as you follow some simple rules. First, plug a lamp or other item into the receptacle ...
Grounding a Hot Water Heater5/2/2009
  Q: I am going to be replacing my cold water copper pipes with cvpc. My electric hot water heater is ...
  A: The feeder wires to the water heater should be three conductors, two phase or power conductors and ...
screw in type fuse panel5/1/2009
  Q: my daughter was doing hair (dryer,crimper,tv,music)kind of blew the fuse its a 15 amp fuse.I ...
  A: There is a dead short somewhere in the circuit. It would be costly as it will blow a fuse with each ...
Enclosure4/23/2009
  Q: I have a water pond in my backyard that I'm "raising from the dead". There are 4 outdoor spotlights ...
  A: Yes. Go to an electrical supply and ask for an outdoor box. There are many manufacturers of these ...
Hot Electrical outlet4/14/2009
  Q: We had an electrical outlet in our living room that was hot to the touch and had a burning smell ...
  A: Without knowing the wattage of the heater I can not say if it was overloaded, but if so, it should ...
Main Panel Now a Subpanel without seperate ground4/13/2009
  Q: We have a second home which was extensively remodeled and added on to in the sixties and seventies. ...
  A: By code if you were now adding this basement panel as a sub panel, it would require a four wire feed ...
my power source is a 14-3 line4/10/2009
  Q: How do I wire a three-way switch when my power source coming into my switch box is from a 14-3 line ...
  A: Jason, a three way switch circuit is one of the most difficult circuits to describe without a ...
baseboard heaters4/9/2009
  Q: I have installed several baseboard heaters using the thermostats that mount in them. My question is ...
  A: I have used both types of thermostats, and once a comfort level is reached and you know the stat ...
sattelite cable sparks and trips breaker4/7/2009
  Q: Good evening . I am trying to diagnose a problem with my sattelite cable tripping my breaker when I ...
  A: It seems there could be several areas to check. When you install new receptacles, do you use the ...
instalation of GFCI4/6/2009
  Q: My new old home (Montgomery County, MD; built 1950's) does not have any outlets in the bathrooms. ...
  A: You can connect it to either existing circuit and the amperage and wire size will be determined by ...
circuit breaker4/4/2009
  Q: I have a 100 amp panel with more than one line connected to many of the breaker switches. I was told ...
  A: There are two solutions. You can either install a larger panel with more circuits, or a legal method ...
Wiring in a 240 V Circuit Breaker into Garage with Finished Walls4/2/2009
  Q: I am wiring up an air compressor in the garage that has finished walls (dry wall) and is attached to ...
  A: we will take these in order. 1. The circuit can enter the panel in any accessible part of the panel ...
Electrical power feeds for single phase 220v equipment3/30/2009
  Q: Mr. Cook, Recently, I purchased two pieces of woodworking equipment that I will be installing. The ...
  A: You have to overlook the cords the factory supplies as they are under different rules and ...
Electrical Sockets3/29/2009
  Q: My daughter has told me that when she plugged her new kettle into the socket in the kitchen it did ...
  A: I would first suspect a loose connection on these particular receptacles. Turn the power off on each ...
outdoor low voltage lighting3/27/2009
  Q: I have a set of 8 low voltage outdoor lights. The wiring goes appox: 10 feet from the transformer ...
  A: There may be several issues. First, make sure the photo cell is wired in the correct location. A ...
3 phase electric3/24/2009
  Q: I have a small fabrication shop that runs off of 220 single phase. I recently purchased an air ...
  A: A converter for this large of an amp draw would be very difficult. You may be either able to install ...
wiring electric range3/21/2009
  Q: what gauge wire for a free standing electric range and oven?
  A: Every range or oven is rated in watts and it depends on the total watts. If you can get this ...
adding extra lights to a 15 amp3/20/2009
  Q: I have a customer that is adding extra 4" Ressesed lights to his kitchen. What is the max number of ...
  A: Last part first, you can not put #14 on a 20 amp breaker as it is only rated for 15 amps. To ...
wiring question3/19/2009
  Q: I moved into my house last year, it was built in 2003, I want to install recessed lighting into my ...
  A: The smallest gauge it should be is 14 and it must be fused at no more than 15 amps. It would depend ...
motion detectors2/12/2009
  Q: i'll try to make this simple. i work for a hotel.i'm trying to find a motion detector which has a ...
  A: Yes, and there are detectors that will work with a variety of options. Seek out an electrical supply ...
Baseboard heater2/10/2009
  Q: I recently purchased a 35 year old home. One of the upgrades to the house was a new 100A electrical ...
  A: If the heaters are on a separate circuit, and this needs to be verified before changing any wiring ...
120/240/12v Options2/9/2009
  Q: We're building a small portable safe bedroom for my chemically injured partner, and we're trying to ...
  A: Tony, you have an excellent understanding of the panel and you are correct in every way. If there ...
adding new outlet to middle of existing circuit2/7/2009
  Q: I thought you might be able to help me. I found your other post concerning adding new outlets to ...
  A: No problem Denis. Since the existing outlet will already have two blacks and two whites connected, ...
wire size1/31/2009
  Q: recently purchased new home.lights flicker when heat pump goes on.(all brand new trane ...
  A: #12 is only rated for 20 amps and with this long of a run it is adding to the problem. This wire ...
subpanel/feeder1/28/2009
  Q: I would like to put in a subpanel on the first floor in order to be able to limit access to the main ...
  A: Not legally. #4 is only rated for 85 amps. #3 is rated for 100 if you are pulling copper and #1 for ...
Generator - Proper cord from Gen to House1/26/2009
  Q: I have a small Coleman Powermate PM0524000 generator (4000W - 5000W surge). It has a NEMA 6-15 240 V ...
  A: The formula to convert watts to amps is: Watts divided by voltage = amps So on ...
Wire Splicing In Breaker Box1/24/2009
  Q: My 200amp Murray load center/breaker box supports full width breakers at the upper portion and full ...
  A: Yes, you can legally do this type of a splice within the panel. A suggestion, if you think you may ...
electrical wiring1/20/2009
  Q: i am replacing a exhaust fan, and light fixtures. currently in the box there is 3 switches and 2 ...
  A: Part of this does not make sense, in the three wire cable it leaves the white wire connected to ...
electrical upgrade1/17/2009
  Q: I'm thinking of buying a rehab house, I can do everything except the electrical. Approximately 1200 ...
  A: Scott, this varies so much by location, will the panel be replaced, the meter box, the devices? Most ...
electric to a shop1/16/2009
  Q: my shop is approx. 150 ft. from my fusebox in my house..i want to run 3 flourecents and a few ...
  A: You can either use two strands of 10/2 or one strand of 10/3 and share the neutral and still have ...
electric to a shop1/15/2009
  Q: my shop is approx. 150 ft. from my fusebox in my house..i want to run 3 flourecents and a few ...
  A: The only problem I forsee is using 30 amp breakers. No 120 volt receptacle or light is rated for 30 ...
simple wiring1/13/2009
  Q: I installed a new light in the laundry room. The old fixture was a circular florescent. I ...
  A: Is there only one black and one white wire in the light junction box? If so, this should be correct. ...
Ceiling Fan Sparked1/12/2009
  Q: I was taking the light kit off of our ceiling fan since I recently installed can lights, and I ...
  A: The switches in a ceiling fan have very small contacts in them and most likely the switches were ...
Bath light with vent and heat1/10/2009
  Q: I have 4 switches in my bathroom (2 doubles). Each switch should correspond to 1 function. 1- ...
  A: If these are the ONLY five wires in the junction box, we are in luck. Only one of these five is the ...
Burnt component smell at disconnect switch1/9/2009
  Q: Overjoyed to have found this resource, thanks in advance for any insight. Basic Issue: ...
  A: I am suspecting a heater problem. The heater should only be pulling 23 amps, and reading 46 - 47 ...
popping noise and a rubbery burning smell1/8/2009
  Q: I was in the shower this morning, and I heard a loud popping noise. When I got out and was getting ...
  A: I would be concerned but I am not sure where to tell you to begin looking. Since you heard the sound ...
Disposal hookup1/7/2009
  Q: I have 12/2 Home run to outlet box And 12/2 going to switch from same outlet box Would like to have ...
  A: Look closely at the receptacle terminals on the side with the brass screws only. You will see a ...
2 gang - 3 way switch & dimmer switch12/17/2008
  Q: I have an existing 14/2 circuit ,with a dimmer switch and a 14/2 power source for 4 potlights. ...
  A: If the circuit originates in the switch junction box it will be somewhat simple. In most switch ...
Hot Ground12/16/2008
  Q: I noticed some of the ground wires in my grandmother's home have current coming through them. I can ...
  A: If there are circuits sharing a neutral, which is common, the neutral may have some feedback voltage ...
Power Consumption12/14/2008
  Q: I live in a small one room studio apartment. I have a G.E. electrical window mounted A.C./heating ...
  A: I would need to know the actual wattage of the heaters to determine the less expensive one to ...
Electrical Terminology Question12/13/2008
  Q: when you say something is 480 / 208 V - what exactly does that mean? What is the first # and the ...
  A: This is a multivoltage device that depending on how it is wired will operate on 480 or 208 volts. A ...
2 lights with switch at end of run12/10/2008
  Q: I am trying to wire 2 lights behind my bar and want them both to run off the same switch. I have the ...
  A: In order to have a working switch at the end, you would need a three wire cable from the first light ...
What type of wire for 240 volt outlet12/9/2008
  Q: i am installing 4 outlets in my shed that will be 240 volt. what type of wire from home depot should ...
  A: First, #4 copper is only rated for 85 amps, so keep this in mind as you apply loads to this panel. ...
outside circuit breaker box12/6/2008
  Q: I have 2 wells currently running on thier own 30 amp separate 2 pole breakers. However, I need a ...
  A: These are mini breakers and I personally do not like them as the contact point in the panel is 1/2 ...
GFI Circut not working12/5/2008
  Q: All the electrical circuits on two walls in our kitchen stopped working tonight. This circuit ...
  A: If the GFI will not reset, it has failed. Even though the tester does not show that voltage is ...
FLASHING HOME LIGHTS12/4/2008
  Q: A PREVIOUS ANSWER SAID "IF IT'S A LOOSE CONNECTION" I WISH TO KNOW IF THE POWER CO HAS THE ABILITY ...
  A: No, it is not possible. The transmission lines are continuous from the utility, go to different ...
Metal Flex:11/24/2008
  Q: I'm running 14/2 metal flex inside a garage to power outside garage lights. I have a run that when ...
  A: Metal flex will break easily when bent, so I recommend a box on both sides connected by conduit ...
Early '50's residential wiring11/24/2008
  Q: My husband & I are remodeling a home built in the early 1950's. The old light switches are wired ...
  A: This sounds like a low voltage wiring system that was experimented with in a number of ...
USE wire type permitted uses11/23/2008
  Q: I have a 400 amp u/g service (dual sweetbriers 4/0-4/0-2/0 al) being brought into a shop in conduit. ...
  A: The utility is not regulated by the code for distribution lines and to the meter is all part of the ...
need to hook blower back to furnace11/22/2008
  Q: We had to have a new blower motor put on our furnace. we have it back now and don't know ...
  A: The white will be the neutral or common wire and will connect to one line lead or the neutral wire. ...
3 phase to 1 phase11/21/2008
  Q: I am looking for a transformer or a correct way to use 440 volt 3 phase to operate a system that has ...
  A: I have a friend in the plastic injection molding industry who is in the process of retrofitting a ...
recessed lighting11/20/2008
  Q: J. Cook,"Your the man!" I installed recess lights on the living room and ran a 12-2 wire to the ...
  A: Fernando I need a little clarification. Do you want the new recessed lights to work by the three way ...
wiring in a tanning bed11/20/2008
  Q: i need some help understanding how to do a wiring job. i have no experience with wiring except with ...
  A: Joe I need one piece of information that should be on the label of the tanning bed, what is either ...
GCFI Question11/17/2008
  Q: Is the single pole switch GFCI protected on a GFCI single pole switch combo (like the Cooper Wiring ...
  A: John, that is an excellent question. It would depend on how the switch is powered internally in the ...
Wiring!11/16/2008
  Q: Last week,I tried to change a ceiling fixture,the guy who installed the old one put a long screw and ...
  A: If you are positive the two white wires were connected together before, do not change either of ...
Adding attic lights11/16/2008
  Q: I'm adding 4 lights in my attic 2 at each end, I would like to wire them to a central junction box ...
  A: It is up to you, but I would put them on a separate switch as you do not want the attic on every ...
Wire sizing11/14/2008
  Q: I am building a shop and need to run electrical underground from the house to the shop. I figure ...
  A: I know copper has gone sky high, but I still prefer copper. For 100 amps on this distance: ...
electric heaters11/14/2008
  Q: How much wattage of electric heaters can I put on a 20 amp circuit breaker.
  A: The formula to determine the watts of any appliance is" Watts divided by Volts = ...
install ceiling light where a ceiling fan and light used to be11/11/2008
  Q: I removed a ceiling light and fan from the dining room and I want to install a light. My new light ...
  A: I am not sure what you mean by exactly like the switch. The incoming power should have a continuos ...
power surge11/11/2008
  Q: I was told be the fire dept. last Aug as they were putting out the fire at my house, that if you ...
  A: The panel needs to be checked to see if it is balanced. There are two hot legs feeding in the ...
Non-operating pump on boiler11/10/2008
  Q: I have an American Standard boiler which circulates by convection. However, there is a B&G pump for ...
  A: The electrical is easily accessed on the pump, it is most likely a 120 volt pump and you can attach ...
Strange elctrical clicking in wall11/9/2008
  Q: i have a strange clicking sound in the wall i have only heard it at night it is in the same place ...
  A: I would turn off one circuit at a time until you determine it is definitely an electrical circuit ...
install ceiling light where a ceiling fan and light used to be11/8/2008
  Q: I removed a ceiling light and fan from the dining room and I want to install a light. My new light ...
  A: I am 99% sure the two red wires go to the switch. Remove the switch plate and look at the switch to ...
Indoor vs outdoor spa requirments11/7/2008
  Q: Can you tell me what differences are allowed in wiring a inside spa vs an outdoor one? My ...
  A: I am not sure what the intent was, but for an indoor spa, there has to be a GFI protected receptacle ...
esb avalon16 residential tanning bed electrical help11/7/2008
  Q: We have a esb avalon16 bed that has always worked great but now shuts off automatically every couple ...
  A: I would have to believe something has failed in the bed. The heat produced from the bed has damaged ...
Burned out receptable11/6/2008
  Q: "Hi - I have a 1943 Cape Cod home, where a "master electrician" once lived. Apparently this guy ...
  A: There is a loose connection somewhere on the affected circuits. It does not appear to be in the ...
Bathroom Vent and Light11/6/2008
  Q: Here is what I have my bathroom: 2 switches. One switch controls the vanity light and a light ...
  A: Actually you will need to do the opposite. You already have a power source on both switches, so ...
Subpanel to detached garage11/5/2008
  Q: I'm an electrician that has not done a lot of work recently but I need to run a 60 amp sub panel to ...
  A: I also built and wired a detached garage. The problem with calculating the electrical is what will ...
Floor mounted outlets11/4/2008
  Q: We live in Florida (where everything is near sea level) and have several floor mounted outlets in ...
  A: Not by code. If concerned, the easist way is to install a GFI breaker on the affected circuits, this ...
Attic Fan11/3/2008
  Q: Bought this house 6 mos ago. Attic fan runs when temps are cooler not when hot no matter what you ...
  A: There should be a common terminal supplying power to the thermostat and in turn to the motor. One of ...
splicing11/3/2008
  Q: Is there an easy way to splice a heavy duty extension cord (three prong) back together that was cut ...
  A: The best way is to use butt connectors that are crimped onto the wire. You also need a heat shrink ...
grounding outlet11/2/2008
  Q: I asked my landlord to replace a two pronged outlet with a three prong outlet. He did, but when I ...
  A: If there was an ungrounded receptacle installed, in 99% of cases it was because there was no ground ...
Home Generator / Transfer switch outlet11/2/2008
  Q: The existing home we recently purchased is actually wired to accept a generator plug via a transfer ...
  A: It is critical the receptacles are rated the same or at least rated at the generators capacity. The ...
grounding my subpanel11/1/2008
  Q: I have a 200 amp service in my barn. I put a 100 amp breaker in to feed a subpanel at my "beach ...
  A: Yes, by code you did need the fourth wire. A suggestion, you could tie a pull string to the smallest ...
Attic Fan10/31/2008
  Q: Bought this house 6 mos ago. Attic fan runs when temps are cooler not when hot no matter what you ...
  A: There should be terminals on the thermostat that allow a device to operate on temperature rise or on ...
Wire size question10/31/2008
  Q: For a 120/220 standard house power panel I want to run a 3 conductor with a ground for 30 amp ...
  A: By theory the neutral is only for the imbalance of the load, so according to the electrical code, a ...
220v wiring10/30/2008
  Q: I READ THAT A 220V CIRCUIT HAS TWO HOT (110V) WIRES AND A GROUND FOR SAFTEY. I'M CONFUSED, WILL THE ...
  A: Electricity doe not actually flow in a loop, it deadheads at whatever device is being operated. On a ...
LIGHTS OUT IN THREE ROOMS10/28/2008
  Q: I TURNED ON MY HALL LIGHT YESTERDAY AND THE BULB SOUNDED LIKE IT FLICKERED OFF AND THREE ROOMS ...
  A: A connection has broken somewhere. First make sure there are no GFI receptacles that are tripped, it ...
Backup generator10/27/2008
  Q: What would be the best home backup propane generator to buy for a 2500 SF home? How exactly do ...
  A: It is based on the service size if you want to operate the entire home. The formula is amps x volts ...
hot spot in wall10/26/2008
  Q: While at my daughter's house, entering a room, I noticed that the switch was warm to touch. Above ...
  A: This usually indicates a loose connection causing heat. This could create a fire eventually. If the ...
installing a new pull switch in ceiling fan/light10/25/2008
  Q: I am installing a new pull switch on my ceiling fan. Prior to installing the switch and with the ...
  A: I can not see anything with the fan creating a problem at the switch. The hot circuit wire will ...
gronding outlets from armored cable to romex10/25/2008
  Q: the line from the breaker box is armored cable with no ground wire. how do i add outlets grounded ...
  A: Using the correct connectors, the metal sheath is the ground. Also it is allowable to install ...
Wire Sizing10/23/2008
  Q: I am rewiring a house in Mexico and following the 2002 NEC for wire sizing, grounding, circuits, etc ...
  A: The utility is not required to meet code specs. Since this wire is in free air, it is rated ...
electrical remodel question10/23/2008
  Q: and thanks for your time. I'm in the midst of a kitchen remodel project (doing it all myself) and ...
  A: You are in luck. By code kitchen receptacles are considered appliance receptacles for obvious ...
20 amp circuit / 15 amp receptacle?10/19/2008
  Q: This should be simple but I've read just enough to confuse myself. I'm installing a dishwasher as ...
  A: I personally do not agree with the code, but according to the code a 15 or 20 amp rated receptacle ...
generator hook up10/17/2008
  Q: I currently have a work shed that is being supplied via the house power and I would like to power it ...
  A: There should be a wattage rating for the unit to determine the actual load it can pull. You would ...
4 way switch wiring10/16/2008
  Q: How do I wire a dimmable recessed lighting configuration that will have switches at 4 different ...
  A: This is a more complicate circuit than I can describe and I have no way to send a diagram. My ...
Transformer for Downlight10/16/2008
  Q: how do I replace a transformer for a downlight? What equipment am I going to need?
  A: In the ones I have replaced it requires an 11/32 nut driver for the nuts holding it in and a pair of ...
How to install 240 outlet10/15/2008
  Q: I have wanted to install a 240 outlet for a kiln in a bedroom I use as art studio. My home is a 2005 ...
  A: If you have never worked in a live panel, I do not advise it as the panel will always be hot even ...
Pump starts running backwards10/8/2008
  Q: I have two pumps that are in a pit and pump out only water from some gutters. They are 480 3 phase. ...
  A: I would keep an eye on them. I had the same thing happen to an entire rooftop full of a/c units. The ...
hot/fgrd. reverse10/7/2008
  Q: a few years ago, several outlets on a circuit went dead. they'd be dead for months and then they ...
  A: Check the voltage with a meter at the last working receptacle on the outgoing terminals feeding to ...
INSTALLING TWO PARALLEL SWITCHES FOR CONTROL OF TWO SEPARATE LIGHTS10/3/2008
  Q: connection switch: Ok I have a single simple switch which controle a ligth inside the house and ...
  A: The original set up is not parallel, it is in series. The time clock was making the circuit based on ...
getting electrical work10/3/2008
  Q: I am a recent graduate of a technical trades school. I took electrical classes and also took and ...
  A: I got the best results from a Yellow Page add for business. Also vs going to the job sites, the ...
Running 220v Power for Stereo System from UK10/2/2008
  Q: I own a Sony HDC-RDX8 stereo system which I purchased in the Middle East and brought back to Canada. ...
  A: I had the same problem with mine years ago. Mine was a Marantz receiver. You will be surprised how ...
Electric Water Heater Timer9/30/2008
  Q: A timer was installed on my old water heater which died so I want to attach it to my new one. I ...
  A: I have never seen this particular type timer. All timers I have seen break either one or both lines ...
short circuit9/29/2008
  Q: I have a question for ya. I recently installed a new plug in outlet..the wires got tangled and i ...
  A: If this receptacle is not controlled by a switch, there are silver terminal screws on one side that ...
the obvious is not workiing, baseboard wiring9/28/2008
  Q: J, I am installing electric baseboard heaters. The heaters will be individually controlled by wall ...
  A: If you connected the feeder cable with the white on one side of the breaker and the black to the ...
Programmable thermostat help9/27/2008
  Q: Last year I purchased a Honeywell rlv430a. It is a 2 wire programmable thermostat. ...
  A: Most 240 volt heaters only break one circuit leg, when doing it this way one leg is always hot to ...
dryer wiring9/27/2008
  Q: I just remodeled an old cabin and put 10-2 wire in for the dryer instead of 10-3. The walls have ...
  A: Mark, actually this is how dryers were wired for years before the code update. Personally this is ...
3-wire for two circuits9/26/2008
  Q: I ran a 14/3 line from two breakers in my panel to the attic to provide two separate circuits for ...
  A: The tester is seeing back feed voltage from the neutral because these two circuits are sharing a ...
outlet to three switches9/24/2008
  Q: wiring (black, white, ground) goes to outlet then to three separate light switches. They control ...
  A: Lesson Learned? Happens all the time so don't feel too bad. The circuit cable with the black, white ...
jenn air cook top9/24/2008
  Q: we do not have an updated 220 wire box We have a 4 wire cooktop and a 3 wire breaker box we blew the ...
  A: This should have been correct. On a four wire appliance, the white would be connected to the neutral ...
elec dryer issue9/22/2008
  Q: I have a rental (Mom's estate) that my kids just moved into. There was an elec dryer in the house ...
  A: A dryer typically takes a 30 amp circuit. The problem may be the circuit rating. It has to be fed by ...
Change dryer circuit to a range circuit9/21/2008
  Q: I've moved into a late 1950's house, standard 60a main fuse box (no breakers) and two 220v buddy ...
  A: Regardless of the rating of the buddy box, of course it does have to be at least 50 amps and this ...
wiring for a dummy9/20/2008
  Q: i put in a new kitchen and put in a disposal need to know how to wire from wire that runs from ...
  A: At first it appears you need to know how to wire in the disposal, but at the end you are going to ...
circuit breakers9/19/2008
  Q: my dryer stop producing heat it will spin but no heat, i called the manfacture and they said if the ...
  A: You need a volt meter and check between the two large slots at the dryer receptacle to ensure you ...
converting outlet to light switch9/19/2008
  Q: I am remodeling my "L" shaped kitchen. I have 3 outlets (2 on vertical line of the L & 1 on ...
  A: Pull out the receptacle you want to add the switch leg on. Use a two wire cable with ground, which ...
temporary short9/18/2008
  Q: I drove a screw into the 220 dryer line which tripped the breaker, I removed the screw and ...
  A: Depending on how bad it damaged the insulation, it may never be a problem. The best solution would ...
Re-Wiring Table saw for 2209/17/2008
  Q: I have a Sears 10" table saw that is wired for 110 volt operation, but the motor can be re-wired for ...
  A: The receptacle you describe sounds like a 20 amp 120 volt receptacle. You need to verify the voltage ...
shop subpanel9/16/2008
  Q: I am setting a house trailer approx. 100' from my existing garage/shop, where my meter and 200 amp ...
  A: I am not sure how much power is being used in the shop, or how much you want to use in the trailer, ...
putting in a light fixture9/15/2008
  Q: I have a red, white and black wire coming in and a red, white and black wire going out. How do I ...
  A: You will have to open devices before and after this box to determine what is there. These could be ...
3 way switch replacement9/13/2008
  Q: I'm trying to replace an old 3 way switch but I'm having trouble matching up the connections between ...
  A: The only connection that is critical is the common terminal of the three terminals. It will be ...
2-200A+200A ATS??9/13/2008
  Q: Building a new home. Electrician is telling me I need 2-200A main boxes plus a 200A transfer switch ...
  A: You need a little more clarification. There will not be 3 - 200 amp breaker boxes with this ...
Switch at End of Circuit9/11/2008
  Q: I am adding a circuit of recessed lighting in my basement. Power comes from the panel, thru seven ...
  A: The switch is a back fed device when using the white wire, if it was at the beginning of the ...
dead switch9/11/2008
  Q: Recently moved into a relatively newer house. There is a switch in the entry way that looks like it ...
  A: A tool every homeowner needs is a volt tester. It can be purchased at any home supply and is about ...
220 single to 220 3 phase conversion9/10/2008
  Q: I need to convert a 220 single phase outlet in my shop to 220 3 phase for a 15 horse motor. I read a ...
  A: Randy there are a couple of options, you can use a converter just for this one device, or a ...
splitting 2209/9/2008
  Q: I noticed there is a romex cable beginning at the box in the barn with the two insulated wires ...
  A: It is not providing a safe ground as it is. Since this circuit goes to a dock at any point, the ...
installing ceiling lite fixture9/7/2008
  Q: the light fixture that I want to install has a standard white and black connecting wire, the ceiling ...
  A: You will have to use a volt tester or meter to determine which wires are the returning hot wires. I ...
splitting 2209/7/2008
  Q: I noticed there is a romex cable beginning at the box in the barn with the two insulated wires ...
  A: From the 220 breaker, there should have been a 3 wire with ground ran so there would be an insulated ...
ceiling light9/3/2008
  Q: I'm looking to add a ceiling light to a bedroom. The existing switch is now controlling a wall ...
  A: The big obstacle is the circuit is at the receptacle, not the switch so the wire will have to ran to ...
Ceiling fans8/29/2008
  Q: I am helping a friend install ceiling fans in rooms with light fixtures leading to single wall ...
  A: It will require one more wire to the fan. The current switch has the hot circuit on one side and the ...
Electrical wiring8/28/2008
  Q: During a remodeling project I forgot to write down how a switch box was wired. There are two ...
  A: With out being able to test the voltage, each switch appears to need the black and red conncted to ...
home wiring problem8/28/2008
  Q: my power keeps cutting in and out it will flicker go out for a few seconds and then return it does ...
  A: The first avenue is to contact the utility to check their incoming lines. There is a loose ...
Clicking sound in walls8/27/2008
  Q: Hear an intermittent clicking sound in the wall of an interior bathroom. Sounds like it is coming ...
  A: Since it seems to be from the exhaust fan, it may be a damper that is opening and closing that is ...
Wall Oven Wiring8/27/2008
  Q: I have 2 questions I was hoping you could ahelp with: 1. I am remodeling the kitchen and will ...
  A: 1. It will be no problem running the oven on a circuit with wiring rated for 50 amps, which would be ...
Hot Tub8/26/2008
  Q: what is the difference between 15A 110V and 20A 125V other than the plug being sideways on one end. ...
  A: The voltage figures do not matter as some manufacturers say 110, 115, or 120 but all are referring ...
wiring outlet8/26/2008
  Q: I want to move an outlet, and when I opened it up, I found 3 wires. Red, black, and white. No ...
  A: My first thought was, and still may be correct, is this receptacle is fed by two hot wires, the red ...
installing new door chime8/25/2008
  Q: Mr Cook I am helping someone do some odd jobs around her house, built in 1939. She had removed the ...
  A: At the button location see what color wires are feeding it, this will verify two of the wires. I am ...
light switch8/24/2008
  Q: how do i hook up a switch ,to a wall outlet
  A: If you have a live receptacle to add a switch, run a two conductor wire with a black, white and ...
rewiring 1200 sq ft house8/24/2008
  Q: looking at buying house, know it has wiring problems, what would the approx cost be to rewire the ...
  A: Since an electrician is personably liable for the wiring, I do not believe there is much you can do. ...
Need 120V from 240V on a water heater8/23/2008
  Q: here is the setup: Installed a pool electric water heater (4 elements 20000 W total on 240V). From ...
  A: The best solution would be a proper transformer. Almost every a/c units control voltage is 24 volts ...
Pink & Orange wires?8/22/2008
  Q: We are remodeling our kitchen and I noticed the electrician installed pink & orange wires in the ...
  A: Manufacturers are now using every color of wire known to man, nothing is standard any more and as ...
weld machine wiring8/21/2008
  Q: wanting to rent a 250 amp welder. I need to wire it up at the house. I have a 200 amp main/with ...
  A: Philip, a welder is a somewhat unique device. It converts energy similar to a transformer to have ...
generator8/20/2008
  Q: I (work for electric co.) need to hook up a generator to a 120v 2w meter can to keep a street light ...
  A: Every generator has built in receptacles. I would put a male cord end on a #12 rubber cord long ...
Electrical wiring8/19/2008
  Q: J. I am wiring two wall lights on separate switches, with power to one of the lights. Can you help ...
  A: It will depend on whether you are going from the switch to the second light, or feed from the first ...
wiring8/17/2008
  Q: installing a new light in the bathroom There are 4 wires coming from the ceiling 2 black 1 white ...
  A: Look very carefully in the ceiling box. One cable has either one black, one white and one bare ...
making a 3 way light for timing - parts?8/16/2008
  Q: I want to make a small, light, sturdy unit which holds 3 different colored light bulbs. The user ...
  A: I do not know of an existing device to use, but making one out of wood and painting it you can ...
stove outlet/ braker & check up8/16/2008
  Q: ok cook thank you for all this good info. i am learning alot and hoping some time soon i can get ...
  A: The size of the wire really can be deceiving as the insulation thickness or the number of strands ...
Wiring Methods-unfinished basements8/15/2008
  Q: I understand that according to Article 334.15(c) you must staple non-metallic sheathed cable that is ...
  A: I totally agree, and apparently many inspectors do also. The electrical code is a guide, but any ...
New breaker box in detached garage8/15/2008
  Q: I have an old fuse box in a detached garage. All the wiring into and out of the box is new and I am ...
  A: You are correct, #10 is only rated at 30 amps, so it will not take much to overload this wire. If ...
Running entire home electrical system from a phase converter8/14/2008
  Q: I was given a 3hp table saw and a 5hp air compressor, both have a 3 phase motor on them because they ...
  A: From the information I can obtain it appears this converter is rated for 100 amps. Just as with an ...
light will not turn off8/14/2008
  Q: I've installed 4 new lights n the kitchen, along with a new switch. The #1 light works like it ...
  A: The black wire from the switch should be connected to the power black wire and nothing else. The ...
whos right8/13/2008
  Q: i am going to hook up a ac 225 stick welder. it calls for 230 volts and 50 amps. i only have room ...
  A: Paul, I think I am as ready for you to get this completed as you are. First, I can not believe a ...
installing a subpanel8/13/2008
  Q: i want to add a subpanel in my workshop: 1.my main panel is rated at 150amps & has all but 2 slots ...
  A: I will go in question order. 1. It depends on the load that is already on the panel. The only way ...
Doorbell chime8/12/2008
  Q: I purchased a DE-Light LED doorbell and a Craftmade Westminster (8) tone Door Chime model C3PW. When ...
  A: There have to be two wires going to the button. I do not have the wiring diagram, but the ...
Switching a 220 volt element8/11/2008
  Q: I have a question regarding a homemade smoker/cooker. I will be using a typical 220 Volt oven ...
  A: You can do it exactly as proposed. A similar use is a 240 volt baseboard heater. The thermostat on a ...
submetering8/11/2008
  Q: I need to install an emon dmon class 2000 submeter. Here is the situation: I will install a 600 amp ...
  A: That is exactly how the systems are metered in my location, but before I invested a lot of time and ...
Subpanel service8/10/2008
  Q: I've built an outbuilding that I've got a subpanel in, the building is wired inside already. I'm ...
  A: By code you have to use a 4 wire cable from the main panel. This change was made almost 10 years ...
60amp to 100amp cost8/10/2008
  Q: looking at houses and one I like has a 60amp fuse panel, and for insurance purposes I would most ...
  A: Most residential services are 200 amps. I would go ahead while it is being upgraded with a 200 amp ...
dimmer switch wiring8/8/2008
  Q: In our dining room there are two switches that can turn the chandelier on and off. I replaced one ...
  A: With two switches controlling the same device, each must be a three way switch with a common ...
electric service in 1920 4-plex8/7/2008
  Q: My mom & dad inherited a 1920s 4-plex. The electric service coming in is 60AMP cartridge fuses to ...
  A: There must be many gas appliances in this structure. I do not see how today a single family home can ...
powering a lincoln ac 225 s welder8/6/2008
  Q: i just got a ac 225 lincoln stick welder and am tring to find a way to get power for it. it calls ...
  A: It would be really pushing the 40 amp stove circuit as this is the max rating on the circuit and the ...
getting power for 230v 50amp welder8/5/2008
  Q: i just got me a nice old lincoln ac 225 s stick welder. i know very little to electric trems. i was ...
  A: First of all does this friend not care for you very much? If you attempt to connect to the wires ...
adding a ceiling light8/5/2008
  Q: You were really helpful last week, so I'm hoping I can get a little more info for another possible ...
  A: Jay I am glad I was able to help earlier and will assist at any time I can. You will have no problem ...
Flat blade plugs8/4/2008
  Q: I just purchased an a/c window unit and it came with a two blade flat (horizontal) plug. I wired a ...
  A: The installation is correct. However a mistake in checking the voltage is reading from each slot to ...
Lights8/3/2008
  Q: I have remodeled a room and installed two light fixtures on the ceiling controlled by switches on ...
  A: This is a three way circuit and something is crossed. It is a very difficult circuit to describe in ...
Motor wiring8/1/2008
  Q: Seems popular, and there is no wiring diagram, but here is what I have to work with. AO Smith 115v ...
  A: Kevin, even amongst AO Smith motors the wire colors can be controlling different items. The only way ...
Electrical wiring8/1/2008
  Q: I'm trying to replace a switch that controls a recept to control a ceiling light that I'm ...
  A: This sounds confusing as I do not see why the switch would be controlling a receptacle to control a ...
adding a bathroom fan7/31/2008
  Q: I'd like to add a fan to my bathroom which currently isn't wired for one. The bathroom only has a ...
  A: It depends on the type of dimmer. Some require a neutral connection also, but that can just be ...
Sensor light7/31/2008
  Q: Want to wire two outdoor sensor lights, "Portfolio" model #PF-4166-SA , to have a dual master ...
  A: A standard sensor light is connected to a constant power source and when the sensor detects motion ...
Lampshade voltage7/30/2008
  Q: I am going to move to a country where the electrical current is at 220 volts. Will my 120 ...
  A: I am sure the plug configuration is different and the internal components are only rated for 120 ...
Dryer Electrical outlet7/29/2008
  Q: My old dryer is currently connected to a 50 amp dryer receptacle, which I have come to discover is ...
  A: The only reason this could void the warranty is the 50 amp breaker that will not trip if there is a ...
electrical7/29/2008
  Q: how do i add another switch to control one lite from two different positions
  A: Nathan, this would be a three way switch circuit. It is very difficult to explain this in writing ...
How many amps is a 3HP treadmill7/26/2008
  Q: How many amps does a 3HP treadmill motor use?
  A: It should be stated on the nameplate label, but a positive way to know is to connect it to a drop ...
installing a sub-panel7/26/2008
  Q: I just built a 12x20 shed to be partially used as a small workshop. I was planning on installing a ...
  A: Depending on what loads you will be using, I would still go with the 20 amp circuits and put two on ...
adapter 230 Volt AC to 9 Volt DC 1000 mA7/25/2008
  Q: Long time ago I bought a Radio Shack A mini amplifier speaker : - input sensivity : 1mV - Imput ...
  A: Yes. A transformers rating is based on its maximum capabilities, so anything under this will work as ...
low voltage lighting7/23/2008
  Q: I don't understand electronics very much. I installed a 300 Watt low voltage transformer to a GFCI ...
  A: The transformer is not emitting 300 watts, it is only emitting what load is attached, ie 140 watts, ...
hot tub wiring7/23/2008
  Q: I have a 240v hot tub hard wired to my electrical box. I am moving across town and want to ...
  A: That is all it will take. If you have never working in a live panel before though, keep in mind that ...
Pendant Lamp Installation7/22/2008
  Q: ..I installed a pendant hanging lamp on my own and i connected the black to black, white to white, ...
  A: I need a little more information Tara. Did you replace an existing fixture? Also, there is a switch ...
Converting a switch to control 1 outlet on a 2 outlet recep.7/20/2008
  Q: i have in my home a dual outlet wall socket that is controlled by a switch. The switch controls both ...
  A: If you turn off the circuit controlling this receptacle and pull it out of the wall, you will see ...
hi7/18/2008
  Q: some friend of mine is very poor and told me they plan on somehow stealing electricity form the ...
  A: There will always be some electricity lost from damaged lines, weak transformers etc. that the ...
pump wiring7/18/2008
  Q: i have a 1.5 hp pump 230v 8.0amps what size breaker would i use? single or double pole? what size ...
  A: It will require a double pole to get 230 volts and with a rating of 8 amps, to allow for start up ...
RELIANCE TIMER FOR INGROUND POOL7/17/2008
  Q: I HAVE A RELIANCE TIMER TYPE 511 AND HAD TO REPLACE A WIRE TO MY POOL PUMP AND NEED HELP RE-WIRING ...
  A: The incoming power wires SHOULD connect to the front two screws and the pump wires to the other two, ...
condensate pump7/17/2008
  Q: Montgomery County, Maryland required a condensate pump although I have a drain hole right next to ...
  A: There is usually a molded cord on the pump to allow it to plug into a regular receptacle for power, ...
panel load max7/2/2008
  Q: Our house has aluminum wiring w/ 125amp box. It has open slots for additional breakers and I would ...
  A: The only way to truly tell is to turn on all possible loads and with an amp clip, put it around ...
installing electric heaters6/30/2008
  Q: I will be installing 3 500 watt 3' electric (220v) baseboard heaters, up on the 2nd floor. What ...
  A: The formula to determine a circuit size is: Watts divided by Volts = Amps So with the ...
220 to 110v wiring6/30/2008
  Q: i have 220 v single wire in my pole barn and would like to wire this with with 110 v how do i ...
  A: I am not sure how you have 220 on a single wire as it usually requires both legs of a service of 120 ...
Outlet damages appliances6/29/2008
  Q: I believe I have a problem with my bathroom outlet. I have damaged several appliance. For instance ...
  A: It is very likely there was a problem with the old receptacle. What you need to try is plugging ...
working spaces6/28/2008
  Q: NEC 110.26 defines the width of the working space in front of the electrical equipment shall be the ...
  A: I would absolutely get the inspector who will pass the job's input. By code, the area in front of a ...
ceiling fan6/27/2008
  Q: I just installed a ceiling fan. Out of the ceiling I have 2 white two black and one red and a ...
  A: The two blacks and whites on the fan are for the fan and a light kit in case one is installed. The ...
low voltage canopy6/26/2008
  Q: I'm trying to install exterior low voltage fixtures inside my house (new construction). I'd like to ...
  A: The problem may be with either of these is any wire junction has to be readily accessible according ...
Wiring upgrade?6/25/2008
  Q: I'm about to help a friend wire a basement he is finishing. It's about 1600 sqft with 3 bedrooms, ...
  A: Regardless of the number of breakers or the current incoming service size, it depends on the current ...
second panel box6/25/2008
  Q: i have a 200 amp panel. i have added things to it in the past. now i have got a tankless water ...
  A: In no jurisdiction I am aware can you do this yourself or any licensed electrician. The pole feed is ...
fan/light and 3 way switches6/24/2008
  Q: I have a huge problem. I have 2 locations in my home that have this. The wiring setup is as ...
  A: It would require removing the remote control device in the new fans which I am sure would void the ...
Neutral wire size6/24/2008
  Q: I am doing a 100 to 200A service upgrade and need to splice most of the circuits in a junction box ...
  A: I have not encountered this situation where the neutrals did not go back to the panel separately and ...
no power to outlet6/23/2008
  Q: I just noticed that both power outlets in both of my bathrooms are not working. All other light and ...
  A: These receptacles should be controlled by a GFI device somewhere. It is a receptacle with a reset ...
Timer Switch6/22/2008
  Q: I am trying to install a in-line vent fan with a wall timer switch. The timer switch has 4 wires ...
  A: Without the exact model switch I can not be 100% certain, but the circuit should connect color for ...
GFI tripped after strom and won't reset6/22/2008
  Q: We had one of our usual storms yesterday in Florida and I had one GFI trip. When I pushed to reset, ...
  A: I would call an electrician. Either the circuit has been damaged or some other device on the circuit ...
Wiring a Detached Garage6/20/2008
  Q: I need some clarification. I am wiring a detached garage that is about 80 feet away. I buried four ...
  A: The only thing different from what you have so far is the ground needs to be connected to the ground ...
GFCI v.s others6/18/2008
  Q: (1)A GFCI is the best to use, especially in a bath or kitchen (2)Then we have an older outlet in ...
  A: 1. A GFCI is required by electrical code in a bath, kitchen, outside, or near a water source such as ...
Mobile home electrical6/17/2008
  Q: I have an 1987 pinewood mobile home (Doublewide) half of the power in the house is out. I have ...
  A: Different manufacturers run the electrical in different areas, you would have to check with the ...
220 electric dryer6/16/2008
  Q: Our old electric dryer suddenly stopped producing heat, everything else worked as it should. We ...
  A: I agree Pat. Most dryer components including the motor work from 120 volts, but it requires the full ...
GFCI w/switch6/15/2008
  Q: The GFCI has a line side and a load side. There is also 2 black switch leads coming out of the top ...
  A: From the load side, there should be one black and one white just like the line side. Apparently ...
Can light to pendant light6/15/2008
  Q: I have several can lights and want to make them into regular ceiling light attachments. I want to ...
  A: It is not impossible, but difficult. The can light fixture is an entire apparatus in itself. A ...
split line6/12/2008
  Q: had 5 florescent lights and am replacing them with 50 watt lights. I plan on installing 6 or 7 of ...
  A: The formula to determine the load on a circuit is: Watts divided by volts = amps ...
Square D sub panel expansion6/12/2008
  Q: I currently have a Square D Q08-16L 100D sub panel with eight circuit breakers. Eight is not ...
  A: No panel can be modified by code. It is common for manufacturers to use the same inside panel shield ...
Double Meter Socket Wiring6/10/2008
  Q: Do you know if it's allowed to use a 2 gang 200 amp meter socket to feed (1) 200 AMP panel and (1) ...
  A: Some utilities do offer a meter base with two load side lugs. You will have to check with the ...
Relocating 220 volt for Stove - splice ok?6/10/2008
  Q: I am planning on remodeling my kitchen. As part of the make-over I will be moving the electric ...
  A: A junction box has to be accessible by code. You can cut around it even if it inside of the cabinet ...
European to American6/5/2008
  Q: Hope you can help or know someone who can help. We are building a home in the Caribbean where the ...
  A: Most likely it will require a fairly large transformer to convert the power. I would check with a ...
wiring6/4/2008
  Q: what exactly is a common in an elec. circuit. Low voltage and high. Does it have the same voltage as ...
  A: Every type of voltage requires a " Hot " and a common or in higher voltage commonly called a ...
Outdoor 20A Circuit & Low Voltage Circuits6/4/2008
  Q: I am landscaping my back yard and want to install a 20A circuit. I have an extra slot in my garage ...
  A: Running 100 feet you need to step up to #10. Since it will be in conduit, it would probably be ...
Low flowing electric5/30/2008
  Q: I have electricity that runs to my barn and everything works but it is now running slow, example, ...
  A: I would say there is a damaged wire or loose connection. Check the voltage with a meter in a ...
detached garage wiring feed5/30/2008
  Q: I have a 50'x80' detached garage that is 500' from my home. I want to run power from the home (200 ...
  A: To allow for the distance, I would run 2-#1 copper for the hot leads, 1-#3 copper for the neutral, ...
trifield reading5/29/2008
  Q: We live in a condo conversion built in the mid 1980's. I have this EMF reader, and most of the house ...
  A: Some of these meters are so sensitive they can pick up readings from a cell phone, copper piping, ...
Electric Question5/29/2008
  Q: This might sound strange but this is what is happening in my sons room... When we have our Dish ...
  A: It may very well do this if anything is plugged and then unplugged from this receptacle. I suspect ...
Ceiling fan wiring5/28/2008
  Q: I have a switch that controls the top 1/2 of the outlet. I would like to remove the switch, make the ...
  A: Actually you have two different power feeds to the current receptacle, both coming in on red wires. ...
Flourescents and Humidity5/21/2008
  Q: Does humidity affect fluorescent tube lights? I have several older ceiling fixtures in my garage ...
  A: I have never encountered a problem with flourescent lighting affected by humidity, but any thing is ...
220 single phase to 220 2 phase5/21/2008
  Q: G'day we are moving back to Australia and would like to take a 220v 2 phase appliance (clothes ...
  A: Unless there is some sort of a converter available at an electrical supply, I do not see how it can ...
service disconnect, residential5/20/2008
  Q: For a residential application, if the service drop and meter is on the outside wall of an attached ...
  A: The first means of disconnect from the meter has to be within 6 feet of the meter. You can penetrate ...
Table Saw Circuit5/20/2008
  Q: I'm wiring a basement shop and need to run a 220 outlet for my tablesaw. It has a 3 hp single-phase ...
  A: You will need a double breaker for a 240 volt circuit to the saw. Every panel is different, you can ...
220v hot water hookup5/19/2008
  Q: but no hot water. Have 4 leads coming out of the wall. Black, red, white all with plastic jacket on ...
  A: Joe, with existing wiring who knows what is actually attached to the breaker. Go to a home supply ...
hvac wiring5/18/2008
  Q: I just had an air-to-air heat pump installed at my 1952 home in Arizona, but I don't trust the job ...
  A: It violates all sorts of electrical codes. The conduit, whether suspended below a surface or laying ...
wiring house panel to air conditioner condensor5/16/2008
  Q: i own a mobile home ( mfg in 1996) in cook county illnois.. and two things are in question. 1- the ...
  A: Neither of these are safe. The a/c unit by code has to have a disconnect within site and no more ...
timer connections for controlling outdoor lights with the help of circuit diagram5/16/2008
  Q: I want to control my outdoor lights with the help of timer so that they will switch on at 6 pm and ...
  A: There are several issues to consider using a timer. Right now with daylight savings time, it is ...
swamp cooler wiring.5/15/2008
  Q: I am wiring a new swamp cooler, motor and pump. Ive got black, white, red, green coming from my ...
  A: By the wiring indicated, unless the green wire is being misused as a hot wire, there are only two ...
low voltage electrical system5/15/2008
  Q: My house was built in the mid 1960's and has a low voltage electrical system with relays. I am ...
  A: You may be able to contact the manufacturer of the switches and see what they may have available as ...
How to locate short in underground outdoor lighting wiring5/14/2008
  Q: I have a 110V to 12V transformer connected to underground wire that runs under my landscaping, lawn, ...
  A: Are you positive it is the wiring and not the attached load? You can take a 120 volt circuit and add ...
solar option?5/13/2008
  Q: I am in need of an outdoor power supply, Primarily for my pool pump (115 volts 11 amps) but also an ...
  A: Cyndi I really have no experience with solar devices. I do know motors however and it would require ...
Adding 100 amp fuse panel to garage from main house panel5/12/2008
  Q: Mr. Cook, how are you? I have a question for you. I have a 2 car garage which I am adding on to make ...
  A: I hope you have not purchased a panel yet. Considerable savings can be had by using a main lug panel ...
A/C in mobile unit5/12/2008
  Q: I installed an air conditioner in a trailer that I am using as a mobile laboratory. Too late I ...
  A: If the a/c unit is a 240 volt unit, you can replace the 30 amp breaker with a 20 amp, or if the a/c ...
wind generator info5/10/2008
  Q: would like to know what is involved to install a wind generator in my home ? Thank You
  A: It would connect the same as any generator. The safest method is to use a transfer switch so the ...
buss bar space in main panel5/10/2008
  Q: My main panel is a GE load center Cat. TL302OC Mod 2. My question is: I ran out of buss bar ...
  A: It is not legal to modify any electrical panels, so a buss bar cannot be added. An alternative is to ...
burcam 230v sprinkler system pump5/9/2008
  Q: currently hardwired and I want to convert to a plug connection. can it be done and how? Thanks in ...
  A: There are numerous plug and receptacle combinations. They are rated by the voltage and amp draw. See ...
3 way switch controlling a receptacle5/8/2008
  Q: There are 2 light switches that used to be able to turn on/off the bedside lamp that has been ...
  A: There is a tab on the hot or black wire side of the receptacle. It connects the two terminal screws ...
wiring home for a 220 dryer5/7/2008
  Q: I have an old home, and there is one 220 receptacle. However,it is attached by using 2 20 amp ...
  A: First, this circuit is very light for a dryer. Most dryers are on a 30 amp receptacle requiring a ...
home wiring5/7/2008
  Q: I'm re-wiring my house one room at a time, I just started and had a question about proper wiring. I ...
  A: With no more load than one room would put on a circuit including every load in it, the voltage drop ...
baseboard heaters5/6/2008
  Q: I've read up on baseboard heater installation and seem to still have a couple questions: Why are ...
  A: It depends on the heater wattage for the size wire and circuit you will need. The formula for ...
Flashing Interior Lights5/6/2008
  Q: The lights throughout our house tend to flash quite a bit. It happens mostly in the evening but ...
  A: If it is caused by a loose connection, there could be a lot of concern as it could heat up and ...
faulty outlet/wiring5/5/2008
  Q: I have an outlet in my kitchen that has a reset button and seems to govern several other outlets. ...
  A: He is correct. Because the receptacle GFI's seem to fail so often, I use a GFI breaker. It is more ...
convert one three wire circuit to two circuits5/5/2008
  Q: At present, two fixtures on one switch are in parallel; so a three wire cable connects the two ...
  A: The only reason there would be a three wire cable anywhere in this circuit is the hot circuit enters ...
Receptacle replacement error5/4/2008
  Q: I made a rookie error. I thought I had turned off the circuit to the room when I went to replace a ...
  A: Look for a tripped GFI receptacle. It may be a bathroom, kitchen, or outside receptacle. If none are ...
HOT NEUTRAL5/4/2008
  Q: I have a hot neutral, and electricians have not been able to find the source. Can I simply ...
  A: It will not affect the power bill, but it is potentially dangerous. You need to start at the breaker ...
moving an electrical outlet5/3/2008
  Q: I am remodeling my bathroom. When we purchased the home two walls were covered with mirrors, with ...
  A: You can not make a junction box where the originals are as they would be covered by the new mirrors ...
replacement gfi bathroom wiring5/3/2008
  Q: I have removed the old gfi outlet, we are replacing only because we wanted a new colored outlet ...
  A: The best tool a homeowner that is doing any electrical work needs is a volt tester. It is about the ...
Electric generator4/29/2008
  Q: I have electric generator 100KVA 380Volt 3Phase, when I used power consumption calculations standard ...
  A: It would be per phase. A device pulling 100 amps is pulling 100 amps on all three legs, it would not ...
3-wire confusion4/29/2008
  Q: I'm finishing my basement and can't seem to successfully add 2 lights to the existing lighting ...
  A: The reason there is a three wire cable from L1 - L3 is to have the switch circuit at the end. You ...
Kitchen Wiring4/27/2008
  Q: I hope this is not too much for one question but here goes....I am remodeling my 1960's kitchen. It ...
  A: First, the #14 wire is illegal on a 20 amp circuit as it is only rated for 15 amps. I rewired my ...
caps4/26/2008
  Q: Regarding those plastic twisty caps for holding wire connections; Do the wires need to be twisted ...
  A: The code book says not to twist the wires together, allow the nut to twist them. As far as the ...
Plasma Cutter4/25/2008
  Q: I just borrowed a plasma cutter from work to start cutting some body panels off of my current car ...
  A: I would not trust the wire colors on the plug as it was field installed and could be any ...
100 amp service / new a/c4/24/2008
  Q: We have a home, built 1968 in Arizona which appears to have a 100amp service. We recently had an 4 ...
  A: You may be just fine as is, the new unit compressor are much more efficient than the older units. ...
Garbage disposal wiring question4/24/2008
  Q: Howdy from a fellow AllExperts "expert" (in a computer-related area). I am about to replace our ...
  A: If this will ever be inspected, using flex from the disposal will be the least of your worries. You ...
overhead lighting4/23/2008
  Q: I am moving into a renovated condo that was built in the 1950's. There is no overhead lighting in ...
  A: It depends on the ceiling construction. It is possible to fish wiring into some ceilings. A cheaper ...
Replacing an outlet4/22/2008
  Q: The house I'm living in was built in 1965 and I was wondering how do you replace an outlet in a home ...
  A: Turn off the breaker feeding this receptacle. Remove the cover plate to expose the receptacle, ...
subpanel needed for AC4/20/2008
  Q: I live in Massachusetts and need to add a subpanel for a new AC installation. My current panel is ...
  A: In the long run it would pay to upgrade to a 200 amp service, this is the most common in ...
emigration4/20/2008
  Q: Im a qualified electrician with wiremans license. I have my own business for 12 years that employees ...
  A: Each state has its own Electrical licensing board. Check with the state you are moving to at the ...
unbalanced panel?4/19/2008
  Q: main electrical panel is reading 118v(L1 to ground or neutral) and 126v(L2 to ground to neutral). ...
  A: The first thing I would do is call the utility to check the incoming service to ensure there is no ...
20 amp dual circuts with CGCI4/18/2008
  Q: I am converting my garage into a woodshop. I want to run 20 amp dual circuit outlets along the walls ...
  A: Most residential services are single phase, but you may be able to get three phase in your area, but ...
electric overhead lights4/18/2008
  Q: My son in Nashville Tn. finished off his basement. He has 4 overhead lights wired into a box and ...
  A: The panel needs to be opened and this supply cable checked to see if the ground and neutral wires ...
Flickering Lights In Entire House4/15/2008
  Q: Cook.... I am experienceing the problem of flickering lights all over my house. On occasion they ...
  A: If it is a loose connection, yes it could possibly be dangerous. I would have the electric utility ...
sub panel4/14/2008
  Q: I am upgrading a 100 amp main breaker panel to a 200 amp panel so that I can install a 100 amp sub ...
  A: If it is a cable vs individual conductors, a cable will not have to be in conduit. You need a 4 wire ...
Brown outs... Sort of...4/13/2008
  Q: Occasionally, I will get brown outs in my house. One item seems to pull power from another. At ...
  A: You have said you moved some around to attempt to balance the panel. I am not sure what readings you ...
3 Way Switch Circuit reads 34-38 V when OFF4/13/2008
  Q: I have wired 2 vent lights between two 3 way switches on a staircase. After wiring per the attached ...
  A: Due to voltage being available in three configurations, there will be some bleed through voltage of ...
please help4/11/2008
  Q: We just moved into a new place. When we attempted to plug a light into an outlet here, there was a ...
  A: You need to verify what is going where. It appears the cable with the black, red and white is the ...
genarator4/11/2008
  Q: I have a 1300 power watt generator it will start but nothing will run off it iam trying to see do i ...
  A: I am not sure on this particular model or what you are attempting to operate, but the formula for ...
taking power off a switch circuit4/9/2008
  Q: Can I take power from a switch circuit to energize a base plug? The switch will not operate the plug ...
  A: It depends on how the switch is fed. Open the switch junction box, if there are white neutrals ...
Adding a light and receptacles4/6/2008
  Q: I have an existing Flourescent light in my Garage, but it is inadequate. I am planning on enclosing ...
  A: There has to be at least one receptacle in this area now. You can pull this one out, add an ...
load center balancing4/5/2008
  Q: does each side of incoming legs(120 each leg) need to be balanced?does this lower electric bill?how ...
  A: It does need to be balanced or a 240 volt appliance coming on and pulling a lot of amps can cause ...
Connecting to meter4/5/2008
  Q: I am running the wires for a hot tub. It calls for 6-3 wiring. We are having to come off the meter ...
  A: This is correct. However another problem to consider, in my location unless the meter box is ...
Old Wiring4/4/2008
  Q: I am simply replacing old outlets with new ones, there are two wires both with brown fabric ...
  A: The most simple device every homeowner doing any electrical work needs is a volt stick. You can get ...
Wire Types4/4/2008
  Q: What is the difference between SEU wire and NM-B.
  A: SE is a service entrance wire and the consensus of distributors is the U possible stands for ...
Residential wiring3/31/2008
  Q: i need to know how does a bypass switch works when connected to a photocell.
  A: A photocell is in fact a 120 volt device. It has the black hot circuit wire and a white neutral ...
Convert pull down lamp to switched3/31/2008
  Q: John, quick question on how to convert a pull down light to a switched light. I have a new cable ...
  A: If your new cable is connected to the white and black in the original light junction box, at a ...
Question concerning wiring to 100 amp panel3/27/2008
  Q: We are replacing an older outside service panel, which this identical panel is no longer available, ...
  A: Usually and is the case in my area, the utility makes this connection. Check with the utility and if ...
GFCI wiring3/26/2008
  Q: I have a question that I'm sure will come with a relatively simple answer. Maybe I'm just not in ...
  A: You did great describing what you have. Connect the incoming hot circuit to the line side of the ...
3 phase wiring - converter to 3 machines3/25/2008
  Q: We are building a shop, have done electrical home wiring extensively but have never used 3 phase ...
  A: First, yes you can use a 220 disconnect as suggested to turn it off. As far as the converter, I do ...
Sub Panel3/21/2008
  Q: I now have a 100 Amp QO Square D distribution panel that is full. I want to add a sub panel, I only ...
  A: A 125 or 150 amp main breaker alone is over $100, so I would search for one without the main in it. ...
220 3phase conversion3/21/2008
  Q: Mr. Cook, I am in need of some advise! I am a member of a small church that is doing some ...
  A: Unless a separate service was installed, which is illegal, I do not see how you will have a panel ...
Electrical problem in home3/20/2008
  Q: i am having a serious problem with my mybile home. half of the home's power availability decreases ...
  A: This is a classic utility problem. One of the incoming feeder wires is either loose or damaged. Call ...
Sub Panel3/20/2008
  Q: I now have a 100 Amp QO Square D distribution panel that is full. I want to add a sub panel, I only ...
  A: The sub panel does not have to be the same brand as the main panel, however you will have to have a ...
Low voltage3/19/2008
  Q: We are constantly having to replace the bulb in our closet. The new bulb only lasts a few weeks and ...
  A: It sounds like a loose connection. This is very apparent with the dim light and occasionally ...
Shallow Well Jet Pump Motor3/17/2008
  Q: I have a jet pump on a shallow well for my sprinkler system in South Florida. The system was in ...
  A: There is a 99% chance the capacitor will correct the problem. It absolutely will not operate without ...
Sprinkler controller problem3/16/2008
  Q: I have a problem with one of my sprinkler controllers. Background -- I think I have a more ...
  A: Mike it appears to me with the provided information there is a defective wire somewhere. It seems to ...
Air Compressor Wiring3/16/2008
  Q: I have an air compressor that is a 240V/30A/60Hz/1PH (information directly off compressor). I want ...
  A: The only stupid question I have ever been asked is how much does it cost for power for a skylight? ...
outlets3/14/2008
  Q: How many outlets can you have on one 20 amp breaker.
  A: You can have an infinite number of receptacles on any circuit, the code only states that the ...
Subpanel Wiring3/13/2008
  Q: I want to set up a subpanel for my kitchen wiring -- isolated from the rest of the house ...
  A: If you do not run 240 volts, all of the new panel load will be on one buss bar in the main panel and ...
Stove ties to other outlet? Potential fire hazard?3/12/2008
  Q: I found lights in two bedrooms and light/fan in the washroom were out tonight. The living room ...
  A: It appears you have lost one of the two incoming power legs, thus you do not have a full 240 volts ...
Correcting Double Tapping in Illinois3/10/2008
  Q: I recently had my condo inspected and the inspector noted double tapping in the electrical panel. I ...
  A: You are correct. This is the acceptable method according to the National Electrical Code. You can ...
Electrical Phase question3/10/2008
  Q: I have been experiencing probems with brownouts in my home. Sections of the house have low voltage ...
  A: This transformer would not cause the problems you have. I would first call the utility and let them ...
two way switch ceiling fan3/9/2008
  Q: My husband removed a ceiling fan that is wired for a two way switch. We now have three wires coming ...
  A: With two switches controlling the same device, it is a three way switch circuit. It is almost ...
Possible overload and breaker panel troubles3/8/2008
  Q: Below is a posted background description of my problem, and a rsponse from one of the electricians ...
  A: Bob is correct. When you turn on any of the burners or controls of the stove, you are back feeding ...
Wiring my shop for power3/6/2008
  Q: I have a 200 amp panel in my house and i have found a 220 plug in my carport. My question is can i ...
  A: This is a very often asked question. I can tell you from experience, most likely this receptacle was ...
lights dim when turned on3/6/2008
  Q: In the last two days, the lights in the bathroom and one bedroom come on dim unless the furnace is ...
  A: This is classic of a slightly loose connection somewhere in this circuit. When the furnace is on, it ...
220 v circuit3/5/2008
  Q: I live in northern NJ is it allowed to wire a second receptacle (outlet) on a 220 v circuit so I can ...
  A: Yes, you can do this with no problem. The code states as long as the connected load does not exceed ...
3-way wiring3/4/2008
  Q: I want to wire 2 light fixtures with two (3-way) switches. I can get one light to work, but not the ...
  A: A three way or four way is a very complicated circuit. It is almost impossible to just write out the ...
electrical buzzing3/3/2008
  Q: We live in a two story house. There is a buzzing coming from the ceiling in the first level family ...
  A: It is very difficult to tell, but when you hear this buzzing, turn off breakers one at a time until ...
220 baseboard heater2/28/2008
  Q: I'm adding a Marley baseboard heater to my tv room. I want to add a thermostat to the heater, but i ...
  A: For a 240 volt circuit you will not need the white wire as it would be a neutral for a 120 volt ...
Electric outlets2/26/2008
  Q: I remodeled a room and used 12 gauge wire and 20 amp circuit breaker. I needed to extend the wiring ...
  A: #14 is only good for 15 amps and should not be connected to this circuit. You can make it correct by ...
broken light switch.2/25/2008
  Q: When opening an old receptacle to replace the light switch, I found hot(black)line going in and ...
  A: I need to be sure we are speaking about the same devices. A receptacle is a device with usually two ...
240 volt electric heat circuit2/24/2008
  Q: I installed a 30 amp 240 volt circuit that runs 3 - 1600 watt in-wall heaters in my unfinished ...
  A: On the thermostat boxes, if there is a ground screw on the thermostat, remove the paper tab that ...
ceiling fan installation2/23/2008
  Q: I am installing a ceiling fan with a remote control in a box replacing a light fixture that was ...
  A: You will need to use a volt tester to indentify the correct wires. One can be purchased at any home ...
power supply to instant water heater2/20/2008
  Q: Instead of adding a junction box to power Chronomite Instant-Flow water heater, can I simply attach ...
  A: No. Any standard receptacle will have a maximum rating of 20 amps. This requires a 30 amp circuit ...
Outdoor GFI problem2/19/2008
  Q: I have an outdoor pond. Before winter I put an areator pump and a heater in the pond to provide air ...
  A: If you use a single outlet receptacle instead of a duplex with two outlets, it will be considered a ...
Power to the she2/19/2008
  Q: I would like to install a new breaker panel in the house first of all, second of all I wanted to ...
  A: I would go with a 200 amp 240 volt service for the main panel. This is the most common and will be a ...
Several Electrical questions about re-wiring2/18/2008
  Q: I am remodelling my kitchen and I have to move some of the outlets and install a switch and a 50-amp ...
  A: 1. No. The box must be accessible without removing any permanent structure. It may be undesirable, ...
Plug in chandilier with round black 3 prong plug in cord2/17/2008
  Q: Can I convert a plug in chandilier (under subject above) to a direct wire in ceiling box? If I cut ...
  A: It can just be sure to connect correct polarity. The neutral wire is usually identified by ridges on ...
Strange wiring?2/17/2008
  Q: We moved into a home built in 1952. I have no idea how old the wiring is in the home. I have motion ...
  A: I would be more inclined to say the fixtures have failed as none were corrected by replacing a bulb. ...
Recessed lighting in the basement2/16/2008
  Q: I would like to install highhats in my basement.It has 7' foot ceilings and measures about 25'x 14'. ...
  A: The can size would totally be personal preference. I like a lot of light and would use the 6's, ...
Bad socket2/15/2008
  Q: We have a socket in our family room that had a surge protector extension chord - we had our laptops ...
  A: Most likely the overload on this particular receptacle has damaged it, and plugging a device back ...
subpanels2/15/2008
  Q: i recently installed a new subpanel in an addition of an existing building. after all load ...
  A: If pulling the meter kills the entire electrical feeding the structure, the inspector is incorrect. ...
Baseboard Heater.2/14/2008
  Q: I AM replacing my baseboard heater and wall thermostat..The old thermostat had 4 wires...2black...2 ...
  A: Usually the two black will be the hot circuit, verify this. The two blue should be to the load or ...
Boathouse circuit2/13/2008
  Q: We're having a boat lift installed on our lot & need to extend service from our power pole to the ...
  A: #8 copper is only rated for 50 amps, so you need to step up to 6/3 from the power pole to the shed ...
strange house wiring - ceiling fan installation2/12/2008
  Q: I need to add to a question asked previously on 8/18/06 and answered by R. Cunard. The previous ...
  A: You do need to change out the box as it has to be rated for a fan. The best replacements I have seed ...
electrical2/10/2008
  Q: I used a receptacle tester to test my electrical plugs. Four plugs in one room showed hot/neutral ...
  A: 1. The neutral and hot reverse can cause electronics to fail. It is most likely only reversed on one ...
New Refrigerator & Generator. Ok?2/9/2008
  Q: I am needing to buy a new Refrigerator, and considering either the Amana AFI2538AES or the Maytag ...
  A: It will probably survive better than an old unit as the compressors are more energy efficient and ...
hooking up wiring2/8/2008
  Q: Have a two part question. First what limit you recommend when hooking up wires in juntion ...
  A: 1. It depends on the connector. I do not use the standard yellow or red wire nuts. There is a better ...
electrical outlet has no power flowing..2/8/2008
  Q: I recently was replacing electrical outlets in the home. It went ok except one electrical outlet ...
  A: Disconnect the wires from with the breaker off to this receptacle. With the wires free and not ...
tripping breaker 15A2/7/2008
  Q: my house is 4 years old and today a 15A breaker flipped on me, shutting the basement lights off and ...
  A: Something is creating a short on this circuit. Try unplugging anything that is on this circuit and ...
standby generator2/6/2008
  Q: Cook, thanks for being available! My question concerns powering our home with a standby generator. ...
  A: The formula for determining the amps available is: Watts divided by volts = amps ...
double light switch wiring2/6/2008
  Q: I am replacing a single light switch with a double switch to operate 2 sents of double lights. ...
  A: This may be fine, it depends on whether the white that is connected is a part of the switch leg, or ...
wiring 4 wire therostat to 2 wire forced air heater2/4/2008
  Q: We have an older forced air furnace (1950's), it works fine except we needed a new thermostat. We ...
  A: On your new thermostat, there are two incoming wires and two are the outgoing, so one set will not ...
new panel installation2/2/2008
  Q: Mr. Cook: I am installing a new 200 amp service with the load center approx. 30 feet (wire length) ...
  A: If these are copper conductors the sizes are correct. The second panel will still be considered a ...
2 pole CB question2/1/2008
  Q: I am running a 2/3 UF cable buried from my house panel to a subpanel in an outbuilding. I hope to ...
  A: Assuming this is copper, it is only rated for 115 amps, so fuse it with a 100 amp breaker. I have ...
Switches at top of stairs1/31/2008
  Q: I am currently renovating my basement. The house was built in the early 70's. At the top of the ...
  A: You are correct, and this would be a three way switch circuit. The most simple resource is a manual ...
wiring an electrical sub panel1/31/2008
  Q: can you show me a diagram on what i need to do to feed a sub panel off my main panel i have 200 amp ...
  A: The best resource for this is a manual titled " Basic Electricity " . It is available in the do it ...
GFCI w/switch installation1/29/2008
  Q: I will be replacing existing GFCI outlet with one with the switch. I will run a new wire to feed new ...
  A: On this particular GFI, it appears there is only one neutral connection. Attach a short white wire ...
range hood1/28/2008
  Q: my mothers range hood burnt out , her trailer is like a 1967 , the wiring coming into it seems to be ...
  A: I agree but the most simple way to know is to make sure all wires are loose and not touching with a ...
open neutral,1/28/2008
  Q: 1/2 of a circut is not working, we have checked all the plugs and switches. the breaker switches off ...
  A: Make certain there is not a GFI receptacle in this circuit that is tripped, it could even be ...
Landscape lighting1/27/2008
  Q: I am going to use a multi tap transformer for a low-voltage landscape lighting project. I will need ...
  A: I would check at any home supply that you would purchase the lights from to see what types of ...
Wiring a L1430P locking plug1/26/2008
  Q: I have a camper that says :This connection is for 120/240 volt, 3 pole, 4 wire 60 hertz/50 amp ...
  A: With the 50 amp split into a 30 and a 20 amp, my concern is these are two separate 120 volt ...
electric baseboards1/26/2008
  Q: I'm updating my kitchen and want to replace the electric baseboard and put a digital thermostat in, ...
  A: As long as the voltage of the new heater and thermostat match the existing, yes both can be ...
motion light1/25/2008
  Q: I have an existing motion light and a standard light on the same switch. Standard light stays on, ...
  A: Most motion lights are wired internally with the motion sensor connected directly to the fixture ...
Compressor wiring1/24/2008
  Q: Mr. Cook, you were very helpful with my closet lighting problem a couple of weeks ago - thanks! ...
  A: If you have not worked in a live panel, do not attempt it. # 10 is only good for 30 amps max, so the ...
thermostat installation1/23/2008
  Q: I am trying to replace an older thermostat with a new Honeywell programmable. We have a heat pump, ...
  A: C is the common 24 volt connection for both stats. G is the indoor fan for both. Y is the compressor ...
Fan on a three way switch1/21/2008
  Q: J- I am upgrading an existing ceiling fan. The current fan did not have adequate support so I ...
  A: You did not state if you want three way control, or to control the fan with the unit switch. The ...
3 way switch to contol half outlet1/21/2008
  Q: I have one half of an outlet that is controlled by a 3-way switch. The problem is that one of the ...
  A: First, are there three wires to each switch? If so, it is a matter of switching the wires to the ...
hydronic baseboard heater wiring 220 volts1/20/2008
  Q: just purchased a hydronic heater 3UG30 with thermostat 3UG32 HEATER HAS 2 wires themostat has 4 ( ...
  A: On a 120 volt thermostat, line 2 would be the neutral, not another power line. I do not believe this ...
halogen light1/19/2008
  Q: my new light requires live,earth& neutral only, but i have 4 reds,2 black,2 yellow and dont know ...
  A: Sorry for the delay, I have been out of town. I need more clarification. Are the wire colors listed ...
ceilingfan installition1/18/2008
  Q: trying to install ceiling fan with light package. house built in early 70's found lights are hotted ...
  A: There is only a two wire cable going to the switch. One of the white wires should have been color ...
2 wire from panel, 2 wire to light, 3 wire to other lights???1/16/2008
  Q: From there, there was a 3 wire going upstairs, and another 2 wire going to a light fixture 5 feet ...
  A: The question was incomplete. The last partial sentence was: " When I tried connecting the ...
Furnace/Humidifier wiring1/16/2008
  Q: I installed a whole house humidifier to my furnace. I have a heat pump and gas-fired furnace. ...
  A: The most simple way to control it will be with a sail or pressure switch installed in the supply ...
Arc fault in transfer switch.1/14/2008
  Q: I am wiring a new home I am building that has a standby generator with an auto transfer switch. I ...
  A: Gary, we have installed many emergency generators for entire building power, and I can not recall ...
euro appliances (washer / dryer ) moving to new home in the u.s.1/13/2008
  Q: in one form or the other has been asked before, but in my vast ignorance, the answers have failed to ...
  A: The problem is that these units may be 220 volts, but it is a single line 220 volts. In the US, the ...
Getting 120v from 240v1/13/2008
  Q: I am replacing an electric range with a gas range, but I need a 120 receptacle for the electronics ...
  A: Yes. You will need to go into the panel. If you have never worked in a live panel, it is extremely ...
Curcuit Breaker Malfunction1/12/2008
  Q: Two circuit breakers in an open subpanel were accidentally switched to the off position when an ...
  A: There are contacts inside of a circuit breaker that open on a higher current draw that the rating of ...
Stove controlling the lighting1/11/2008
  Q: Just last night the power suddenly went out to 4 circuits in our home (none of their breakers went ...
  A: It appears you have lost one of the two incoming power legs. When you turn on the stove, the burners ...
Lights surge when appliance turns on1/11/2008
  Q: I just bought a 35 year-old house. I've replaced the disposal and had an electric washer and dryer ...
  A: This could be potentially a dangerous situation. I am not trying to alarm you, but the fact appears ...
single or 3 phase1/10/2008
  Q: we are building a redsidential development in kenya and have differing opinions as to wheter we need ...
  A: I am not certain what voltage is present, but the formula to determine amps is: Watts divided by ...
Series circuit1/10/2008
  Q: I am installing two light fixtures in my closet. It is wired in series with two 60w light fixtures ...
  A: In this configuration, at the first 60w bulb, entering this junction box will be the hot circuit ...
Series circuit1/9/2008
  Q: I am installing two light fixtures in my closet. It is wired in series with two 60w light fixtures ...
  A: So if I see this correctly, your new circuit black wire is connected to the other hot wires that ...
Faulty Outlet12/15/2007
  Q: We have two strings of outdoor Christmas lights and a flood light plugged into two outdoor ...
  A: Scott this receptacle should have been a GFI with a reset switch. If not, carefully remove the ...
A/C wiring12/14/2007
  Q: I am replacing my old central air unit which is a 230volt 30amp unit.Im goimg to replace it with a ...
  A: There is no neutral for a 240 volt appliance. The white wire on a four wire cable such as a range is ...
Plugging my well pump into a generator12/13/2007
  Q: I purchased a 5500 watt (6000 surge) generator that has one four-wire 220V outlet. I would like to ...
  A: As well as the two hot wires, there should have been a ground wire from the service panel to the ...
Breaker Box Wiring12/12/2007
  Q: Two questions: How important is the size of the breaker relative to the application? Specifically, ...
  A: For the first question, I have a 100 + year old home. I used #12 wire and all 20 amp circuits. I ...
Wiring a timer12/11/2007
  Q: I just bought a Intermatic timer to replace the TORK 1101 (http://www.weisd.com/store2/17oa.pdf). ...
  A: This timer is using the main feed lines to continue on to the load. The main feed lines will connect ...
circuit breaker tripping12/10/2007
  Q: hi i was out of town when i returned home my wife told me some outlets in our house didnt work i ...
  A: You first need to be sure the affected breaker is not damaged. Pull the wire off of this breaker and ...
Outlet Plug Overload?12/9/2007
  Q: I haven't seen this addressed elsewhere, so please forgive me if this is repetitious. My daughter ...
  A: I agree it appears they totally overloaded this circuit. However I will say I have argued with a ...
coridor light12/8/2007
  Q: sir How ican operate my home coridor light from 3 diffrent rooms thank you Ashokan
  A: This is a four way switch combination and I have no method of creating a diagram. The best solution ...
Wiring Issue12/7/2007
  Q: Here is my problem ... I moved into a house built in 79. The front entrance has two switches side ...
  A: I believe what you have are two live circuits, one appears to be A and the other is the opposite ...
240 hot tub12/4/2007
  Q: We are going to purchase a hot tub soon. Our problem is that we require a 240v service to the tub, ...
  A: This is totally feasible and is the way most expansions are done. Some advice, a 125 amp sub panel ...
follow-up question12/3/2007
  Q: I had asked another expert, Bob, about changing a bathroom outlet that had 6 wires feeding into it. ...
  A: A wire nut is a thimble looking device to connect two or more wires together. A pig tail is ...
Ground fault12/1/2007
  Q: To find a fault in an outdoor lighting loop supplying garden uplighters that is trippling the RCD ...
  A: You COULD be on the right track. One thing to also keep in mind as you did not state the circuit ...
light switch11/30/2007
  Q: i have double light switch and want to run one of them to a two way light and run the other to as a ...
  A: Ken, this is one of the most complex circuit to attempt to explain in writing and I have no way to ...
Christmas lights11/29/2007
  Q: I have some 20 count mini light strings with no conncetor ends. They are 6 volt bulbs and get ...
  A: You can see how long they will last, but most likely they will either immediately burn out, or burn ...
time delay breaker11/28/2007
  Q: I want to install a dedicated circuit for my table saw. Manufacturer says to use a 15 amp time delay ...
  A: I would contact an electrical supply and have the entire panel model number to see if they can get ...
double luggin in a fuse panel11/19/2007
  Q: I just bought a house and it has a 200 amp service and the home inspector told us that there is ...
  A: 200 amps should be sufficient for the service, but panel wise it could be an 8 circuit to a 42 ...
Electric "Outages" & Causes11/19/2007
  Q: I've asked about the electricity fluctuating and causing the lights, TV's's , outlets, to come on ...
  A: The utility is not sending a clean steady electrical feed to you. It may be a faulty transformer in ...
Garage door sensor11/18/2007
  Q: I replaced my garage door motor and sensors, but is unable to get the sensor's light to come on, and ...
  A: Every manufacturer is different with their wiring colors. The only way to know if this is correct is ...
exterior disconnect11/17/2007
  Q: I am upgrading electrical , new main 100 amp for small house . Main is about 15 ft. from meter in ...
  A: You would not have needed a main in the indoor panel as the fused disconnect is the panel main. Yes, ...
Electrical11/17/2007
  Q: I have outside lights with GFI receptacles on two of the outside path lights. The switch that turns ...
  A: First, the switch is definitely switching the wrong wires. Second, the GFI receptacles are spliced ...
HOT TUB 4 wire11/16/2007
  Q: The Panel has a Double Pole Circut breaker all ready installed two pole marked 70AMP. for saftey ...
  A: One detail that is not given is the circuit amp requirement of the tub. You are stating you want to ...
popping sound in electrical outlet11/16/2007
  Q: We have an electric heater in our home and now when it is running a strange sound comes and goes ...
  A: Any receptacle and any panel making a sound should be checked for loose connections. Find the ...
suggestion11/15/2007
  Q: I'm asking for your advice in bringing the well pump, and septic pump wires from outside by ...
  A: There is no simple way as I am sure you are aware, but what I would suggest is to install a new ...
residential wiring11/15/2007
  Q: I have a newly constructed house that I just moved into about 4 months ago. I recently noticed that ...
  A: You are both correct, unfortunately for you there will be little that can be done now. I am certain ...
electrical outlets in house11/14/2007
  Q: I am a renter and the electrical outlets in my son's bedroom, the dining room, and only 1 plug in ...
  A: Look through the entire structure including any outside receptacles for a tripped GFI receptacle. If ...
Kitchen Swtiches11/14/2007
  Q: I have two light switches and one pair of outlets all in the same electrical box in the wall of my ...
  A: Only one of the two wires on the switch will be hot with the switch turned off. You need to use a ...
Home florescent light11/13/2007
  Q: Purchased and installed a new 24" single tube fixture and switch in a closet. It's at the end of an ...
  A: There has to be some wiring crossed. I am assuming the circuit goes to the light then to the switch, ...
Electric Clothes Dryer11/12/2007
  Q: I moved into a rental house that equiped for a gas dryer, I have electric. The movers said I could ...
  A: Before modifying anything in a rental, I am certain it would be in the lease to notify the landlord. ...
electrical wireing11/11/2007
  Q: how do I wire a 3 way switch? thanks
  A: This is a complicated circuit that I have no way of describing in writing and have no way of sending ...
South african sockets11/11/2007
  Q: I bought a steamer, it has an american socket and the wires are different colors, south african ...
  A: You really need to use a tester to identify the hot wire(s). You may have a voltage different from ...
electrical11/10/2007
  Q: I just bought a little chandelier for my hallway. There is an existing overhead light I just need ...
  A: The switch feeding the light can act as a disconnect. As long as the switch is off, there will be no ...
install ceiling fan to three way switch in the middle of the run11/9/2007
  Q: i'm trying to install a ceiling fan with three wires.one is blue,one is black and one is white.i ...
  A: If you are not referring to the wires in the fan let me know, but usually the fan is the black wire, ...
Wiring an outside building11/9/2007
  Q: J, I'm wiring an outside building with 2 lights and 3 outlets. The building is 50 feet from the ...
  A: You of course only know what type of loads you have in the outside building, but I can not tell you ...
bypass/isolation/transfer switch11/8/2007
  Q: One too many blackouts here in Cape Cod. I'd like have a portable generator (kW - 10kw) on hand for ...
  A: You are correct Larry. I appreciate the information as I have had this similar question many times. ...
Double pole thermostat to single pole electrical box11/7/2007
  Q: I recently purchased several double pole Aube 115 240D thermostats to replace our old thermostats ...
  A: A line voltage thermostat is just a sophisticated switch that makes and breaks on temperature. It is ...
Dimming lights11/6/2007
  Q: Everytime any appliance goes on like the Washing machine or the table saw all the lights in the ...
  A: This could be an indication of several things Dick. 1. The incoming service is too small for the ...
240V Receptacle from 120V11/6/2007
  Q: I need a 240V 20 Amp receptacle for an air compressor. I would like to use an existing 120V 15 Amp ...
  A: I would have to agree Chris. The breaker is sized according to the conductor it is protecting and ...
bypass/isolation/transfer switch11/5/2007
  Q: One too many blackouts here in Cape Cod. I'd like have a portable generator (kW - 10kw) on hand for ...
  A: I am not sure how much more tactful I could have been with this answer. Sometimes its amazing what ...
adding a 50 amp spa curcuit11/4/2007
  Q: I have a 3 year old home, which has a 100 amp service panel. The home has gas heat, hot water, and ...
  A: You explained it perfectly Charles. The problem is most utilities will not allow but one feed from ...
thermostat wiring11/3/2007
  Q: I added a zone to my boiler heating system. I added a taco pump which is connected to a taco zone ...
  A: The red and white to the thermostat from the pump relay should just be a continuation of a single ...
Low voltage light11/3/2007
  Q: While planting new shrubs, my landscaper buried 14/2 UF wire to be used for accent lighting. Can I ...
  A: Yes, this is an excellent choice for the lighting you are proposing. One thing to keep in mind is ...
Changing everything in home11/2/2007
  Q: Hey im looking at purchasing a 75 year old home in philly. It is basically a shell and needs all new ...
  A: I am not sure if any electrical is existing at the present and if so if any of it is usable. You ...
Panel wiring11/1/2007
  Q: I have welder that needs a 50 amp 230 volt source. The plug on the welder is a 3 prong plug. What ...
  A: 1 50 amp double pole breaker and it will depend on the cord, but you need a total of 3 conductors, 2 ...
Wiring Switched Outlets10/31/2007
  Q: Here is the situation...Two of the outlets in my living room are controlled by three switches. One ...
  A: James you really have a mess here. If the tab was broken out on the previous receptacles, the ...
Electrical socket10/31/2007
  Q: When I went to open my deep freezer, I noticed that it was not freezing. I unplugged it and plugged ...
  A: It may be that this receptacle is controlled by a different GFI receptacle. Make sure none in this ...
low voltage question10/30/2007
  Q: Greetings, I am putting in a beam detector for the end of my long driveway. That detector is ...
  A: I think this is very borderline. This is a very small gauge wire to run this long of a distance as ...
Lighting dilemma in condo!!10/30/2007
  Q: I recently bout a ceiling light from Ikea for my dining area in my condo. After removing the cap on ...
  A: Brian, you need to go to a home supply and pick up a tool called a volt stick. It is about the size ...
200 Amp upgrade10/29/2007
  Q: I have a panel rated for 200 AMP service. I would like to add some amp capacity to this maybe up to ...
  A: I am not sure what you are installing that would require a 400 amp service. I have a two story home ...
Power Goes out randomly in house10/28/2007
  Q: I rent, we recently have had some strange things start happening with our power. We have lived here ...
  A: Yes you do have reason to be concerned. This panel needs a thorough inspection by a licensed ...
question10/26/2007
  Q: I was short with my wire 4 n6 for my spa can i splice them or do i need to waste the ...
  A: With a wire this large I would splice it with a split bolt and wrap the splice good with rubber ...
4-Wire Romex for Plugs?10/25/2007
  Q: A few years ago during a reno, I had the electrician put a wire down to my basement for later ...
  A: First, remove the wire that is lacing the two together. Verify that on one breaker the red wire is ...
Wire Distance10/25/2007
  Q: What is the max length I can have between the point of entry and the main shut off?
  A: If you are speaking of residential, from the meter if you pentrate to the inside, you can go 6 feet ...
Add a Plug to Romex from Fan10/23/2007
  Q: I have a bathroom fan that has Romex coming out of it. I would like a plug on the end so I can plug ...
  A: I am sure that now the switch is controlling the fan. The most simple way to do what you want is to ...
circuit breaker10/21/2007
  Q: I installed 2 ceiling fans in 2 bedrooms about 6mnths ago. I dont know what happend but there is no ...
  A: It sounds like a dead short has been created by some crossed wires. Were there light fixtures before ...
ground rod10/20/2007
  Q: I UPGRADED MY GARAGE FUSE PANEL AND WOULD LIKE TO INSTALL A GROUND ROD MYSELF. NEED INSTALL ...
  A: You will need to check with the local inspection department as in some areas there have to be more ...
Ceiling Fan10/18/2007
  Q: Have fan that has a light fixture attached. Fan only words on one speed. Lite comes on with fan. ...
  A: There should have been line voltage wires indentified for connections. Either the fan has a black ...
ac disconnects10/18/2007
  Q: This concerns residential codes. I have 2 condensor units. The large one is rated at 50m amps and ...
  A: I would not begin ( Although in many cases I would LOVE to ) tell an engineer how to design a ...
outlets in one room will not work10/16/2007
  Q: my husband and daughter were painting her room and she painted over an outlet, which sparked, ...
  A: The circuit is very likely still on, it is just not feeding through the GFI receptacle with the ...
GFCI won't hold10/16/2007
  Q: The GFCI circuit in my basement will trip if I plug in any device like a lamp or television even if ...
  A: #4 was the most common suspect. How is this neutral connected to other devices on this circuit? A ...
wires and circuit breakers10/15/2007
  Q: I want to change a 110v 20amp circuit breaker to a 220v(?) 40amp breaker to feed a new electric ...
  A: No 120 volt circuit will have large enough wires for a 40 amp 120 or 240 volt circuit. You will have ...
red wire/black wire10/15/2007
  Q: I am trying to put in a new electrical light switch. After taking of the plate all of the wires are ...
  A: If you are saying how to determine the hot lead as color does not matter on a switch unless it is a ...
Electifying the detached garage10/14/2007
  Q: I will erect a detached garage in proximity to my existing house. I wish to install 200 amp service ...
  A: With a recent code change it requires a fourth ground wire and a ground rod at the sub panel. You ...
Electrical switch10/14/2007
  Q: I have two switches in my hall bath. One for the exhaust fan and one for the light. My issue is, ...
  A: Turn the circuit for these off and pull out both switches. You will see the hot circuit will be ...
converting an electrical outlet10/13/2007
  Q: I have an air/heat exchanger installed in my kitchen that was wired to 220.It burned out. I bought a ...
  A: If you have never worked in a live panel, an electrician needs to do this. The procedure is first to ...
GFI outlet by front door.. how to turn off power to replace outlet10/12/2007
  Q: Where's the breaker for this outlet? The GFI has apparently tripped and does not reset; running ...
  A: The outdoor light is most likely on this failed GFI, so until it is replaced, the light will not get ...
Kitchen Light10/11/2007
  Q: I have a light switch in my kitchen that quit working. I replaced the switch still nothing, ...
  A: One of the best investments a homeowner can have is a volt tester. It can be purchased at any home ...
Run 220 line to garage10/4/2007
  Q: I would like to run (3) #8 wires in a conduit to my garage and a new panel. Can I bury an 8 foot ...
  A: Actually John there was a code change some time ago. You used to be able to either run a fourth line ...
Replacing a 3-Way Socket10/3/2007
  Q: I just replaced a 3-Way socket for a lamp in our house, but it does not work on all three settings ? ...
  A: Just as with a three way switch, there is one connection that is the common connection at the ...
high pitched whine from wall10/3/2007
  Q: i have a high pitched whine that sounds like it is coming from my wall. it has gotten louder over ...
  A: Check to see if the a/c unit is located near this wall. There may be refrigerant lines in the wall ...
230 volt single phase 5hp air compressor9/28/2007
  Q: Ingersoll Rand stated I needed to use #8 wire for a 50 foot run and a 50 amp breaker. Would this be ...
  A: You will need 8/2. The ground is not counted in a cable. This appears to be a 240 volt unit by the ...
Circuit breaker switches9/27/2007
  Q: The switch that controls the outside air compressor (2 pole 30 amp) will trip and will need to be ...
  A: I agree it is dangerous to upsize without checking the wiring. The breaker should be sized according ...
Low Voltage Under Cabinet Puck Lights9/26/2007
  Q: I installed low voltage puck lights underneath my counter about 6 months ago, and they have worked ...
  A: As inexpensive as a transformer is, I would try this first as it could very well cause this problem. ...
4 switches controlling multiple outside lights9/26/2007
  Q: I have a switch at the kitchen door leading to a patio. There are two 40 watt lights at that door. ...
  A: I do not have a means for sending a diagram, but the best resource is a self help manual titled ...
wiring cooktop9/21/2007
  Q: I am installing a new Jennair downdraft cooktop; replacing a similar Jennair unit that is almost 30 ...
  A: I agree it appears you need a 40 amp circuit with #8 wire. This can be confirmed as the name plate ...
plug9/21/2007
  Q: I bought a house with a hook-up for a back-up generator which has a 3 prong male turnlok plug for ...
  A: I first need to know if this plug is directly connected to the panel, or is it part of a transfer ...
thermostat9/20/2007
  Q: i wanted to replace my old thermostat and i never marked my wires.my old one was the mercury switch ...
  A: Joe, there is somewhat of a standard for wire colors, but it really depends on how the installer ...
smoke alarms9/18/2007
  Q: Our electric smoke alarms went off in the middle of the night but there was no smoke in the house ...
  A: All line voltage devices have circuit boards that can be sensitive to voltage spikes. Unless the ...
220 3 phase to 110 single phase9/18/2007
  Q: i have a shop that was a tire shop before there was a 220 tire balancer box ther before that worked ...
  A: The balancer is currently powered from a 3 phase breaker that needs to be replaced with a 2 pole ...
Running electrical wiring to outside building9/17/2007
  Q: I want to run electrical wiring from the house to a new outside building. The Building is 1500 sq ...
  A: I have a very similar set up at my home. I wanted to be certain I had enough in my sub panel for any ...
Whole house fan switch replacement9/16/2007
  Q: I'm trying to fix a whole house fan for a friend. I determined it to be the dimmer (rheostat?) ...
  A: I would check with some of the fan manufacturers. This type of switch is very sensitive to motor ...
SPA Wiring Load vs Distance9/16/2007
  Q: My new spa installation calls for a 50Amp GFCI on #6/3 w/Ground Copper. My run distance is 90 feet. ...
  A: It would be borderline to have any voltage drop at all on this large of a conductor, but if you have ...
Lights in new kitchen9/15/2007
  Q: I are in the process of remodeling my kitchen, it's stripped to the studs. Along with the basics, I ...
  A: Lets do the easy one first. If there is a way to run a circuit where the swing arm light is located, ...
WIRING A SWITCH9/14/2007
  Q: I have basement lighting that operate by pull chain. There are multiple lights on the same circuit. ...
  A: At each light there will be two black wires connected to each light as the hot circuit is connected ...
Photocell and switch combination9/13/2007
  Q: I want to install a photocell to control an existing porch light that is currently controlled by a ...
  A: By doing this you will damage the photocess as it will back feed voltage into the red wire back to ...
voltage drop over distance9/12/2007
  Q: i am adding a pole barn, about 1000ft from my meter and panel. i will be running up to 6 8ft ...
  A: The code will not allow that small of a wire to be used in parallel, so you are on the correct path, ...
Help with wiring9/11/2007
  Q: need some help with wiring. I have an available 30 amp breaker in my air conditioner breaker box ...
  A: Eric, I am sure we can figure something out, but I need a little more clarification. The air ...
3-prong Dryer Outlet9/10/2007
  Q: My old dryer has a 3-prong Range type cord and outlet connected to 50amp circuit breaker. My new ...
  A: You sure can. Of course you could not do it the other way around, but you can always use an oversize ...
Half of my electrical panel is out9/10/2007
  Q: For some reason circuits 1 and 2 have 120 volts each, but 3 and 4 have 0, 5 and 6 have 120 volts ...
  A: If you removed the 8 breakers, you would see that one buss bar controls every other breaker on both ...
High Pitched Squeal/hum9/8/2007
  Q: In the past 10 days, I have had a high pitched squeal in my kitchen, sounding like the electric ...
  A: This is a good one! The only other things I can imagine is either a water line equalizing, or the ...
Is a main diconnect needed in a home electrical panel?9/7/2007
  Q: We are in the process of buying a home and as part of the home inspection it was found there was ...
  A: The contractor is correct, it is still common to find this type of panel still in service, although ...
GFI OUTLETS9/7/2007
  Q: I have (8)GFI outlets on a 20 amp circuit. It is outdoor and located on the exterior of my house.I ...
  A: If you understand how he is saying to wire these, instead of connecting each circuit to the line ...
re wiring in old house9/6/2007
  Q: Cook just want to ask you question about re-wiring whole house as i bought this house last year and ...
  A: Without actually seeing the condition of the wiring, it is difficult to say. The main thing is the ...
partial power loss9/6/2007
  Q: I lose power to over half of my house several times per day. I have checked the breakers and the ...
  A: To be loosing power on more than one circuit, you need to have an electrician look over your service ...
Blown fixtures9/4/2007
  Q: I have two light switches on either end of a hallway that operate two ceiling fixtures. The other ...
  A: You need to purchase a volt tester. It is about the size of a permanent marker and the tip lights up ...
wiring switches9/4/2007
  Q: I'll tve try to explain this as best I can. I have two ceiling lights, two sets of under cabinet ...
  A: It can not be done as you want it. It would be no problem putting them all on one switch, and you ...
dimmer switch9/2/2007
  Q: In our bedrooms we have 3 wall switches. The first switch controls the ceiling fan, the second ...
  A: The new dimmer switch is not making sense unless it is a three way switch which is not needed. You ...
A/C & Dryer Turn Lights On8/30/2007
  Q: First of all, forgive me if my terminology is all wrong... but I will do my best... Yesterday, at ...
  A: Your terminology was perfect. You have a potentially very dangerous situation. It appears there is a ...
Home Wiring8/29/2007
  Q: I recently bought a home built in 1918. The wiring, outlets, and switches are a mix of various ...
  A: You did not indicate the service panel. If you still have fuses, or less than a 200 amp service ...
fan and switched outlet8/29/2007
  Q: I've just installed a ceiling fan in a room that had no existing fixture. I have a light switch ...
  A: You needed to run a 14/3 wire to the fan. As is, there is only one hot wire to the fan, so the ...
Wiring a 4 way switch for light/fan?8/28/2007
  Q: I have a 4 way stich which connects to a fan and a light in the bathroom. The ballast went out on ...
  A: Both white wires have to be used. One is the circuit neutral and should be the white that is with ...
Home Generator Installation/use8/27/2007
  Q: Greetings, I purchased a Troy-Bilt 8000 running watt generator for emergency blackout use. My fuse ...
  A: The main safety feature required with a generator will be a transfer switch so the utility and the ...
Wiring a 4 way switch for light/fan?8/27/2007
  Q: I have a 4 way stich which connects to a fan and a light in the bathroom. The ballast went out on ...
  A: The black and white wire in the same cable should be the hot circuit. Connect the white of this ...
electric service to the house8/26/2007
  Q: I am curiuos to know the average price for a new service to the house.
  A: It depends on the area you are in, if it will be overhead or underground, the length of the run and ...
Wiring Diagram8/26/2007
  Q: Ok here goes...I have to install A Light, Wall switch, Light, Wall switch...With the light at the ...
  A: I do not know of a web site, but there is a manual available at most home supply stores titled Basic ...
Adding a circuit breaker8/25/2007
  Q: Our new house has 400 amp service with two 200 amp main breakers, off one of the panels is an ...
  A: You could legally fill the outdoor panel with breakers, the code stipulation is that the total ...
Looking to disconnect unused switch8/25/2007
  Q: We recently remodeled, making 2 rooms one. The electrician disconnected a switch from an outlet for ...
  A: You will have to trace the feeder wire to the switch and disconnect it where it is receiving power. ...
Ceiling fan wiring8/24/2007
  Q: I've just installed a ceiling fan in a room that had no existing fixture. I have a light switch ...
  A: There are separate wires in the fan, one for the light and one for the fan. Connect only the red ...
240 volt motor8/23/2007
  Q: I have a serious flaw in my eletrical motor knowledge, come to find out. I have always understood a ...
  A: Contrary to popular belief, electricity does not make a circular path. Actually on a 240 volt ...
Wiring outlets off double 40A circuit breakers8/22/2007
  Q: I'm taking out an electric cooktop and replacing it with gas. The old cooktop ran off double 40A ...
  A: I am assuming the new cooktop only needs a 120 volt standard receptacle. If you have never working ...
spark in breaker box8/22/2007
  Q: my ceiling fan was causing a short on the box, I remove the fan, replace one of the electric wires, ...
  A: Does the breaker trip or just spark and the fan operates? If the breaker trips off, there is either ...
panel/breaker box8/21/2007
  Q: i hoping u can help me out. i'm in the process of finishing my basement and ran into a major ...
  A: You are for certain in a difficult situation. It is against electrical code to have a panel in a ...
dble mini breakers8/10/2007
  Q: Is there a special tool or technique to remove the metal guard?
  A: Franklyn I am not sure what metal guard you are referring to. If you are talking about the metal ...
pendant lighting in place of recessed can8/8/2007
  Q: I have on recessed can light above my island in the kitchen. I want to install 3 pendant lights in ...
  A: With the power off, remove the existing can light. This will give you access to the junction box it ...
light switches not working8/7/2007
  Q: I bought a townhouse and a couple of the light switches in the bedrooms are not working. The ...
  A: There is a good chance that there is either a tripped arc fault or ground fault receptacle. Look at ...
Whirlpool bathtub wiring8/7/2007
  Q: With much trouble, I ran a dedicated 20 amp circuit to where my new bathtub is. The motor is rated ...
  A: The nameplate should give you the max circuit amps. Even though the motor is rated for 9.6 amps, the ...
sub panel8/6/2007
  Q: i need to run power to my 100 amp sub panel in the garage i have a 100amp main in the house and the ...
  A: Not legally. You really have a good set up for upgrading since the indoor panel is fed from this ...
Service/feeder sizing8/5/2007
  Q: I am a small shop located in MN, used to doing only residential. I am doing a small new commercial ...
  A: I know what is acceptable in my area due to knowing the electrical inspectors and what they will ...
Do I need to upgarde my service8/5/2007
  Q: First off Thank you for reading this I appreciated your time. I just bought this house about two ...
  A: I can not believe the previous owner paid for an upgrade and only went with a 100 amp service. You ...
GFCI8/4/2007
  Q: Want to put a GFCI in my daughters kitchen & bath. Its an older Bldg, 30 yrs. THe GFCI has a green ...
  A: The purpose of the load side of a GFI receptacle is to protect all downstream devices. Only one GFI ...
220 wiring on concession trailer8/4/2007
  Q: my 220 outlet in my garage is 3 wire with smaller plug. I need to changew plug on trailer to 3 ...
  A: It would be better if the garage receptacle was changed to a 4 wire receptacle. You should be able ...
wiring single a/c outlet8/3/2007
  Q: I was recently given an A/C unit but the plug is a 15 amp. 250 volt. I have an older house built in ...
  A: You can not legally do that and yes it would be dangerous. I would seriously investigate upgrading ...
Electrical disconnect7/31/2007
  Q: "I want to disconnect electric source that powers an electrical power strip that is connected to my ...
  A: Every splice by code must be in a junction box. There must be a box below the floor that feeds this ...
6 =3 or 6 =27/31/2007
  Q: my question is which wire do i need? 6-2 or 6-3 it will be run between the power co, meter box into ...
  A: Larry I would not want you to make a mistake you would regret later. You could use a 6/2 cable and ...
Main Panel Board7/30/2007
  Q: A Siemens W1224ML1200CU outdoor load center was installed at my residence 5 years ago for an upgrade ...
  A: I am not certain of the reason to want a main breaker? I am surprised this panel passed inspection ...
220 LINE7/29/2007
  Q: WHAT'S INVOLVED IN CONNECTING ONE 220 BOX TO ANOTHER 220 BOX? HOW DO I MAKE THE CONNECTIONS? WHAT ...
  A: I assume the connections are to feed a circuit from one to another, or power a second panel from the ...
Transfer switches7/29/2007
  Q: We are having a 20kW Generac generator installed. We have a 400 amp service/system with 2 breaker ...
  A: I am not certain this unit would operate either unit, it certainly will not operate both and it ...
Ground Fault breaker problem7/28/2007
  Q: I have installed a 100amp sub panel connected to my 200amp main circuit breaker box. In the main ...
  A: That is possible. The breaker had an attached neutral wire. It connects to the neutral bar and the ...
Jacuzzi Tub7/27/2007
  Q: My house is 9 years old, and there is a jacuzzi in the master bedroom. One day the jacuzzi part of ...
  A: If there is a short in the jacuzzi, the breaker will not reset. It may also be a defective breaker. ...
Home wiring/ A/C7/27/2007
  Q: We had our air conditioning on auto and it's been running fine. 2 days ago a circuit tripped. We ...
  A: Is your unit a split sytem or package unit. A package unit is totally self contained outside, a ...
line to line and line to neutral7/26/2007
  Q: What is the difference of the two conditions: 220VAC 60HZ line to line 220VAC 60HZ line to neutral ...
  A: I am unsure of the question as far as conditions. I can say that if using a volt meter, the voltage ...
wire7/26/2007
  Q: 25 amps continuous and 15 when i use a saw thanks for any help Larry
  A: Larry there was a code change some time back. At one time you could either pull a three wire cable ...
dryer attached to refrigerator outlet?7/25/2007
  Q: We are purchasing a new 24" washer/dryer to fit in a 25 inch space in our kitchen next to the ...
  A: Due to the start up draw of the refrigerator compressor, even if it did not trip the breaker if the ...
Enhanced Decorator Hallway Light & Single Receptacle7/23/2007
  Q: I purchased a Pass & Seymour Enhanced Decorator Hallway Light & Single Receptacle TM8HWL. I bought ...
  A: The original receptacle was a common wiring circuit. It had a hot circuit that fed the receptacle ...
WIRING FROM LIGHT7/22/2007
  Q: HOW DO I INSTALL A OUTLET WITH THE FEED COMING FROM THE LIGHT AND KEEP THE OUTLET HOT WHEN THE ...
  A: Most often the live circuit enters the switch first, but not in all cases. If the live circuit is in ...
panel upgrade7/21/2007
  Q: I want to upgrade the electrical service in the house I am remodeling to 200A and replace all the ...
  A: It may be easier to install an outdoor panel at the meter to feed the indoor panel. If the indoor ...
Grounding Sub Panel7/21/2007
  Q: I am installing a 100 amp sub panel and have a question about the optional ground screw. The main ...
  A: You need to install the screw as well as install a separate ground bar just like the neutral bar. ...
Bathroom exhaust fan7/19/2007
  Q: we bought a new home(3 yrs old) and the main bathroom exhaust fan will not shut off..My husband ...
  A: If the fan originally was controlled by a switch, it is in the switch or the switch wiring. Try ...
Home Spa.7/18/2007
  Q: I've a 120v spa, that when I plug inot an outlet it only runs for about 5 mins, there is an Circuit ...
  A: Are you just wanting to use the breaker spot, or were you wanting to use the circuit that the double ...
Wiring Secondary Breaker Box7/18/2007
  Q: I need to install a secondary breaker box in my attic. The main breaker box is 200 amp, the breaker ...
  A: You will need a double pole 100 amp breaker for the main panel to feed the sub. The sub can be a ...
Arc Fault Breaker Circuits7/17/2007
  Q: I am constructing a new home in Chicago and the electrical portion is out for bid. I requested from ...
  A: There are some circuits that are required to be GFI vs arc fault, such as the outdoor receptacles, ...
adapters from 2 to 3 prong7/17/2007
  Q: I have an older home with the majority of receptacles being 2 prong. A friend told me that I could ...
  A: No. It will connect exactly as the original two prong receptacle. The only difference is the GFI has ...
adapters from 2 to 3 prong7/16/2007
  Q: I have an older home with the majority of receptacles being 2 prong. A friend told me that I could ...
  A: This is not necessarily true. The house may be grounded, ( it is required to be grounded with a rod ...
wiring a car stereo receiver to ac outlet7/15/2007
  Q: I am looking to mount a car stereo receiver to a shelf in my garage (mostly because these receivers ...
  A: This will blow the receiver off of the shelf and most likely start a fire. The receiver is a 12 volt ...
100-150AmpEl v/s 200-300AmpEl7/14/2007
  Q: Can you explain the differences between 100-150AmpEl v/s 200-300AmpEl in a residential house. ...
  A: The higher the service amps, the more devices can be installed. If this home currently does not have ...
Low Voltage Wiring7/14/2007
  Q: Situation: My old home alarm had a red light in the garage that blinked when the alarm is on – it ...
  A: The first thing to determine is what voltage the old system was operating this light at. Most ...
Ceiling Fan Dimmer Switch7/13/2007
  Q: I am having trouble with a ceiling fan /dimmer combo and I would appreciate your help. Note that ...
  A: If the black dimmer wire is connected to the black circuit wires that are bundled together, the red ...
Ceiling Fan Dimmer Switch7/13/2007
  Q: I am having trouble with a ceiling fan /dimmer combo and I would appreciate your help. Note that ...
  A: You almost had it Jeff. In the switch box the bundle of black wires are the live circuit wires, the ...
wiring7/12/2007
  Q: I have any old house and the wiring is not colored coded black and white. How do I tell which is ...
  A: I used to be, now I consider myself neutral vs hair challenged. A great investment is a tool called ...
Outside Outlet7/12/2007
  Q: There is no power to waterproof electrical outlet mounted outside the of my kitchen. I checked the ...
  A: Many outdoor receptacles are protected by the kitchen GFI. I believe there is a loose connection on ...
ADDING A/C7/11/2007
  Q: MR. COOK..INTEND TO HOOK UP A NEW 3T A/C COMPRESSOR 240 AND PLACE IT APPROX 80 FEET FROM SERVICE. ...
  A: If this is a split system unit and you are only running a circuit to the outdoor unit, a #10 will be ...
Outside Outlet7/11/2007
  Q: There is no power to waterproof electrical outlet mounted outside the of my kitchen. I checked the ...
  A: This receptacle is GFI protected somewhere, most likely from the kitchen receptacle. Pull out the ...
GFCI outlet7/2/2007
  Q: I want to add an outlet in my crawl space for a fountain I installed in the front of the house. The ...
  A: I am not sure how you were going to make the actual connections, but there is a fill concern. Every ...
home surge protection7/2/2007
  Q: do i need to purchase a surge protector for the whole house to protect appliances , tv, computers, ...
  A: Either will offer some protection. I personally use individual item surge protectors, however my ...
wiring7/1/2007
  Q: i am building an under the stairs closet. on each side of the stairs there is one outlet. the main ...
  A: You can make a splice in the wire, but it has to be done in a box that is always accessible in case ...
Fluorescent light switching6/30/2007
  Q: I have recently installed 4 x 35watt fluorescent lights in my garage and switch these via 2 x 2-way ...
  A: It is really hard to tell. Most flourescent fixtures have a ballast that does not require the ...
Subpanel6/29/2007
  Q: I'm adding 220 V woodworking equipment to my shop that is 28 ft away from the house (main panel). I ...
  A: Bless your heart. You would not believe the questions I receive of homeowners wanting to run a 20 ...
cannot remember which wire's go where6/28/2007
  Q: i have bought a new ceiling light took the old one down but cannot remember which wire goes with ...
  A: Being that none of these wire colors are typical, it will take a little work to correct this. You ...
old wires/? short?6/28/2007
  Q: My coop apartment (built 1929)has cloth covered wires. the circuit box shows strange ...
  A: It would be difficult to say how many times this electrical has been modified, but I would have to ...
wiring head aches6/27/2007
  Q: i have a floor lamp w/ a 3 way switch (that i'm replacing) it has black white and red wires where ...
  A: Every manufacturer has their own wiring methods. If you did not purchase an exact replacement switch ...
220v verses 110v on 12000 btu ac6/26/2007
  Q: which is more cost effective?Can you show me the formula to determine this? thanks
  A: There is really no cost savings of one vs the other. A 120 volt load will pull twice the amps of the ...
splitting circuits6/26/2007
  Q: I am running a #10/3 wire to an outbuilding approximately 150ft. I will be drawing less than 15 amps ...
  A: This situation is one of the most common questions I receive. My standard reply is that for the ...
Add central A/C in an old home6/25/2007
  Q: We would like to add central A/C to our home but was told that we do not have enough power coming ...
  A: It will vary depending on the local inspector. In most cases for a change of service it will require ...
spotlights6/25/2007
  Q: i hope you can help me. I have a living room that leads into the dining room. The living room has 8 ...
  A: It appears to me to be a classic case of a loose connection. If the connection is barely making a ...
Calculating # of recessed cans on a circuit6/23/2007
  Q: I'm remodeling a basement (dry) rec room roughly 13' x 29'. I removed the old sheetrock ceiling and ...
  A: The formula to determine this would be: Watts divided by volts = amps. Total up the wattage of the ...
electric failure6/22/2007
  Q: In my barn, I have 245 volts coming in. Beside that is 2 legs each with 130 +- volts with a breaker ...
  A: You may be checking the voltage incorrectly. If you are checking each leg of the breaker to ground ...
Running a Basement Subpanel6/21/2007
  Q: I have an unused 3-wire #6 cable (2 black and 1 ground) that I want to use for a new sub panel ...
  A: You used to be able to either run a three wire cable giving you the two hot legs and a neutral to a ...
Old cloth covered wires6/20/2007
  Q: I just replaced a ceiling light fixture that is operated by a wall switch. The old fixture had 2 ...
  A: Not necessarily as it would work either way. The danger problem is if the wires are reversed, the ...
Garbage Disposal Circuit6/19/2007
  Q: I am doing some remodeling work on my kitchen and had a question on wiring. My house is approx 45 ...
  A: As you can see by the age of this installation, using BX is not as common as it used to be due to ...
Circuit Breaker6/19/2007
  Q: My house was built in 1981. The main 150 Amp circuit breaker, GE TQDL21150, blew out this morning. ...
  A: The price is not out of line for a panel replacement, however I know that Lowe's and Home Depot ...
Shop addition6/18/2007
  Q: I want to run 75 ft. of 6/3 wire from an existing breaker box utilizing a 50 amp. breaker to a ...
  A: Concerning a sub panel in a shop is one of the most common questions I get. I know you have a plan ...
switched recepticle6/17/2007
  Q: My Boyfriend is trying to hook up the garberator and we have 3 wires coming in. We want the switch ...
  A: The circuit will have a black hot wire, a white neutral, and a ground wire. The black wire will go ...
Trouble Shooting Outlet6/17/2007
  Q: "I have an outlet that was working fine. It has 2 red and 2 white copper wires. However a red copper ...
  A: The receptacle will have gold terminals on one side and silver on the other side. There is a brass ...
110v outlet from a 220v outlet6/16/2007
  Q: Right now I have a stack washer/dryer that plugs into a 220v outlet. I now want a side by side ...
  A: Are you wanting to totally convert the receptacle to a 120 volt, or do you still need this also as a ...
light toggle issue turning on power to outlet6/15/2007
  Q: I recently replaced my outlets and light switches in my bedrooms. My bedrooms do not have a light ...
  A: I may need further information regarding how the circuit runs, but I will assume since the switches ...
wiring from double wide to shop6/15/2007
  Q: I want to run this wire from my outside box. Down to the space between house and the foundation to ...
  A: You do not say how far the run to the shop is, but I would use #10 uf for underground feeder. From ...
arizona 3 phase electrical meter box6/14/2007
  Q: i have a 3 phase overhead service coming in to meter box. question is i know the higher voltage leg ...
  A: The third leg is not color coded at all so it remains a black wire. These colors must continue ...
New 230v circuit6/13/2007
  Q: I'm wiring a cooler in a calf room to enhance their coats for shows and have all the materials but ...
  A: Connect the red to one of the flat blades and the black to the other flat blade. The cable is plenty ...
voltage across switch6/7/2007
  Q: i'm hoping you can help me understand something about house wiring. in a simple home circuit ...
  A: I am not sure where you are placing your meter leads, but if there is a neutral wire available in ...
services (pole)5/30/2007
  Q: i live in radcliff ky and i am trying to find out where to get a copy of the code that verifies i ...
  A: There is nothing in the code that addresses this. It is similar to a drivers manual, the manual ...
wiring a lamp with 10 minilights from scratch5/21/2007
  Q: I've designed a lamp that will use 10 Christmas minilights. As of now I have used bulb sockets from ...
  A: NO! Think of how many 120 volts bulbs there are on a standard tree, it is not connected to a 30,000 ...
Three wires,split receptacle and to single pole switch5/20/2007
  Q: in advance, thank you for your help. For the life of me, I cannot figure out how to wire the ...
  A: If you look on the side of the receptacle, there is a brass tab between the two gold terminal ...
sub panel5/19/2007
  Q: I am purchasing a welder that requires a 50 amp ckt. I was going to run 6/2 from the main panel to ...
  A: You can use either size wire and with the smallest, a 60 amp breaker is legal, so either size wire ...
Residential Light post5/18/2007
  Q: I am installing qty 3 - light posts on my driveway. They will be 7 feet tall and the head is fairly ...
  A: Every manufacturer has their own specs for the base concrete, I can not say what may be required as ...
12v dc fans on ac source5/17/2007
  Q: I'm building a UV exposure box for printing, which contains 5 ballasted florescent fixtures. I'd ...
  A: You will need to know the volt amps of the motors, but an electronics supply should be able to get ...
hot tub wiring5/17/2007
  Q: I know you have covered parts of this, but I would like to see full process dicription with diagram ...
  A: Dan, I would need to know the electrical specs in order to provide this if I could, I have no way ...
3-Way Dimer5/16/2007
  Q: I have wired a 3- way dimer to a 3-way switch. The 3-WSwitch when flipped to an on position will not ...
  A: On every three way switch there is one common terminal. If the wiring was not changed on the other ...
Setting Up Swtich to Control Outlet5/15/2007
  Q: I have a question on setting up my wall switch to control top/bottom outlet. In my house, every room ...
  A: This raises a number of questions. Does the one switch control the overhead light, or are both ...
wiring up a new kitchen plug5/15/2007
  Q: I have a kitchen plug over my countertop that has the wire (white red black) running to my fusebox ...
  A: That is correct. Do check one thing on the receptacle. With a red and a black connected, each half ...
Ceiling Fan Question5/14/2007
  Q: My son had to have this twin blade Harbor Breeze Ceiling fan w/ light and remote. I wired it thru ...
  A: The only way would require an additional wire from the switch to the light in the fan, and since the ...
Help Please5/13/2007
  Q: Whn I turned on the light switch in our bedroom the light blew out and then after that we now have ...
  A: It sounds like part of the incoming power has been lost. The dryer heaters work on both incoming ...
Ceiling fan wiring5/13/2007
  Q: I have an existing ceiling fan I just took down to replace with a new hunter brand fan. The old ...
  A: The receiver for the dimmer was made into the old fan. The new remote should work all functions as ...
Low Volatge Wiring of Condensate Pump5/12/2007
  Q: Howdy- I have had to utilize a condensate Little Pump to dispose of runoff from my residential A/C. ...
  A: I'm born and bread hear, ( Spelling intentional ) so be careful. There is no such thing as a stupid ...
Ceiling Fan-New Install5/11/2007
  Q: This question is regarding new installation of a ceiling fan with a light. I will put a metal ...
  A: If you are going to use the pull chain switches on the fan itself to switch the fan and the light, a ...
Miswired switches and outlets5/10/2007
  Q: I just refinished a bedroom and changed the outlets. It has on switched outlet (on the top ...
  A: I am still trying to sort the circuit out. With two black wires on one side of the receptacle ...
Miswired switches and outlets5/9/2007
  Q: I just refinished a bedroom and changed the outlets. It has on switched outlet (on the top ...
  A: If I understand correctly, the switch should only control the top outlet of the one receptacle and ...
Flourescent light pull chain4/27/2007
  Q: I want to install a pull chain switch on a double bulb flourescent light.
  A: Inside of the fixture locate the black wire feeding the ballast. Install the switch into this black ...
Hvac electric4/27/2007
  Q: I am an Hvac/r student from long island and im in my electricity mod. I have a project due and i am ...
  A: All of the products should be available from an electrical supply or HVAC manufacturer such as ...
GFCI question4/26/2007
  Q: Will a GFCI device in a main provide GFCI protection to all downstream circuits? Does this include ...
  A: From the transformer, the secondary side is what is feeding into a structure. The primary side is ...
replaceing blower wirer and main hot wire etc4/26/2007
  Q: diy rheem product great but service bad i have a rheem gas heater unit that went out and the ...
  A: On almost any manufacturers web site there will be a section to order a new wiring diagram. You will ...
Generator- Single or Three Phase4/25/2007
  Q: I am evaluating purchase of a genset but am confused whether I need a 3 or a single phase genset. I ...
  A: Since you have three phase utility, I would go with a three phase generator in the event you did ...
feed capacity for detached garage4/25/2007
  Q: want to add a sub feed to a new detached garage which is 30 feet from an existing 200 amp mobile ...
  A: You are doing exactly what I would have recommended. Actually the attached loads determine when a ...
sub-panels4/24/2007
  Q: i am currently attending electrician school and have been told that a sub feed panel must have a ...
  A: A grounded conducting is more commonly known as a neutral. A grounding conductor is a ground, and ...
acoustic celing4/24/2007
  Q: paddle fan in an acoustic ceiling how do i support it
  A: There is not a specific device to install a fan in this type of ceiling because there are all types ...
Outdoor wiring-- Am I doing this right?? Please Advise...4/22/2007
  Q: Please forgive my ignorance. I need to install four 110v outlets in my back yard for an above ...
  A: Kirk, it appears you are going to operate all four receptacles from this one 20 amp circuit. That is ...
Using Dryer Outlet for more power4/22/2007
  Q: Summer is coming and I had just finished upgrading my bar in the backyard. Usually when I have ...
  A: The only problem with this would be that nothing is GFI protected. It would be better to remove the ...
Electrical panel issues4/19/2007
  Q: I just bought a new home, and since I have a big 220v welder, a plasma cutter, saws, saws, more ...
  A: A panel can not be modified with additional breakers, it has to be manufactured with a specific ...
cable wiring4/19/2007
  Q: Bought a new digital TV and when it was hooked up for cable television we lost cable service. The ...
  A: I meant even at the pole. The electrical and cable lines are mounted to the same pole and the lines ...
wire splitting4/15/2007
  Q: i know this is not recomended, but i have seen people rig radios into there bathrooms off of their ...
  A: The way this is accomplished is to control a receptacle with the light switch, however unless there ...
elec. baseboard heater4/14/2007
  Q: I have 14/3 wire coming in with double 15 amp. breaker. My thermostat has 2 black wires and 2 red ...
  A: This should be a double pole thermostat. The incoming 14/3 wires, connect the black to a black on ...
50 amp 4 wire RV outlet from 50 amp 3 wire welder outlet4/11/2007
  Q: My garage is wired with an existing 50 amp welder outlet using only 3 wires. It is fed from the main ...
  A: Marty you are on the right track. I totally agree to install a sub panel that will take care of the ...
50 amp 4 wire RV outlet from 50 amp 3 wire welder outlet4/11/2007
  Q: My garage is wired with an existing 50 amp welder outlet using only 3 wires. It is fed from the main ...
  A: Actually you do have a ground with the welder circuit, you do not have a neutral. Even though it is ...
sub-panel4/5/2007
  Q: I need to install a sub-panel to handle a 50 amp a/c, 50 amp dryer and 2 20 amp circuits. What amp ...
  A: Dave, the most common panel is a 125 amp panel. You will not need this much, but it will be cheaper ...
Lights flickering constant4/5/2007
  Q: I Have lights that are flickering I check my breakers to see if they are hot. the voltage to the ...
  A: Try turning off the breaker that controls these lights and see what else is on this circuit. It may ...
220 to 1103/31/2007
  Q: I have an outlet box that for some reason was wired as a 220. Both the black and white wire are hot. ...
  A: I am not sure what type of tester you are using, but if it is a voltage stick type detector vs a ...
upgrading service3/30/2007
  Q: I am going to be upgrading my service from 60 to 100 amp. I am wondering if I am going to need a ...
  A: It depends on the utilities box. Every utility has their own manufacturer. While you are upgrading, ...
SINGLE PHASE 220 FROM TRIPLE PHASE 2203/30/2007
  Q: I HAVE A STEREO FROM GERMANY THAT DOESNT HAVE THE SWITCH ON THE BACK FOR 110 IN US AND 220 ...
  A: The European 220 volts is similar to our 120 volts. It uses a single line of 220 volts with a ...
Spa Electric3/29/2007
  Q: I'm wiring a Hot Tub and have a couple of questions. First, the tub requires 3 dedicated 20 amp ...
  A: The installation proposed sounds fine Dave, and yes, I would install a separate ground rod to ground ...
PULL CHAIN CIELING LIGHT3/29/2007
  Q: the chain broke off my bathroom ceiling light fixture. I removed the fixture and it was a very old ...
  A: I am not understanding a white wire on the new switch. A switch is always installed in the hot wire ...
splitting circuits3/28/2007
  Q: I'm planning circuits for the home I'm building. Can I make a Y-Branch from a receptacle or switch ...
  A: It depends on what else you will be feeding as you do not want to overload a circuit. You can extend ...
Water Pump3/26/2007
  Q: I have a Single Phase 2 HP water pump that is capable of running 115/230 volts. The distance from ...
  A: The only result of changing to a 20 may result in the breaker tripping. As long as the pump is ...
vintage traffic signal3/23/2007
  Q: I have a vintage traffic signal - now to be used as a set decoration. it currently has 3 separate ...
  A: It is going to require a timer with relays to operate the lights. I am not sure how we may be able ...
wiring3/23/2007
  Q: I want to run electric to my pole barn that is 250 feet from the main panel in the house. I want to ...
  A: For this distance you need to step up one size more than the table rating. The table calls for #3 ...
wiring a 120v 1500 watt wall heater3/22/2007
  Q: Is it possible to remove an unused outlet and use the power supply to wire a 120v 1500watt wall ...
  A: You may have a receptacle that is not being used, but it most likely is on a circuit with other ...
Wiring two new lights to a new double switch.3/22/2007
  Q: J, I am installing 2 new light fixtures and a new double switch (2 singles in same box)in a closed ...
  A: You will need a 3 wire from the first light to the second also. In the first light, connect the ...
Wall Outlets3/21/2007
  Q: I moved into this apartment about 3 months ago. When entering the home, the light switch turns on ...
  A: With the wiring daisy chained from the switch through the receptacles, it will be almost impossible. ...
120v outlet on a switch to turn on/off3/20/2007
  Q: We have a switch (120v) which controls an outlet on and off. My electrician left a wrong ...
  A: It is wired correctly. The red wire would be connected to the breaker, the white to the neutral bar. ...
220 volt switch wiring3/20/2007
  Q: it has been a while since i wired a 220 volt switch.my buddy has asked for my help it is for the air ...
  A: You can either use a single or double pole switch. However remember if you use a single pole switch, ...
A 204V 20Amp oven using 110V 20 amp line?3/19/2007
  Q: I bought an electric oven which specifies hard wire to a junction box using 204V 20amp. However, I ...
  A: If this receptacle is the only one on this circuit and it has at least a #12 wire feeding it, yes it ...
120 Volts on Common3/18/2007
  Q: I have several outlets and lights that just stopped working. I checked the breakers and nothing has ...
  A: It is possible they are backfeeding the panel and making the neutral bar hot. I know it would be an ...
no power to a few outlets3/15/2007
  Q: Went to turn on the basement tv/stereo/dvd last night and there was no power to any of electronics. ...
  A: Unplug every device that is on this circuit and see if the breaker will stay on. If so, one of the ...
Switch/breaker panel3/14/2007
  Q: I have a 3-way light switch for my stairwell light. If this switch is turned on or off rapidly, it ...
  A: You are seeing an electrical arc. It is either inside of the switch, or from the wiring connections. ...
adding six 3in. gu10 white gimbal lights3/11/2007
  Q: When you say receptacle, You mean a plug right? And if I tap into a plug, then I would have to add a ...
  A: The correct term is a recepacle as it is a receiver for the plug of a device. On any 120 volt ...
Hot Water Heater3/10/2007
  Q: Mr. Cook, When we built our home we had our builder install a basic water heater. At that time, ...
  A: One question. Do you have gas available? If so, the instant, tankless water heaters are the future. ...
Different Wire Sizes for Sub PAnel Run3/9/2007
  Q: Now that I am running my 2 AWG to the garage I have one more question. What is the correct size ...
  A: In table 250.122, it is based on the setting of the Automatic Overcurrent device ahead of the ...
adding six 3in. gu10 white gimbal lights3/9/2007
  Q: I built an entertainment center and I added 6 of these small 3in gu10 lights for visual appearance. ...
  A: The white wire is actually a hot wire on a switch circuit and should have been color coded black. ...
Multi Recepticals3/8/2007
  Q: How many receptacles can you have on a circuit?
  A: The code has no limitation on a maximum number. You can put all the receptacles on Home Depot's ...
Connecting ceiling fan3/8/2007
  Q: How do I match up red, white and black wiring to match the wiring (Black, White, and Green) of the ...
  A: In the cable with the red, white, and black, there should also be a bare copper. The bare copper ...
Replacing Old Wire and Fixture3/7/2007
  Q: The two light fixtures are controlled by separate switches. The light fixture to remain is located ...
  A: Patrick, I apologize also this is taking so many responses, but like you, I want to be certain we ...
Replacing Old Wire and Fixture3/6/2007
  Q: I apologize, I wasn't very clear. I am replacing the wire between two light fixtures as well as ...
  A: Sorry for the misunderstanding. I will need a little more information as according to the existing ...
Replacing Old Wire and Fixture3/6/2007
  Q: Hi, 1. I have a question about installing a new light fixture in my house. Some of the wiring in my ...
  A: In every light fixture, the neutral is the wire connected to the screw or threaded portion of the ...
OUTDOOR RECEPTACLES3/4/2007
  Q: My son plugged a mutli-plug cord into the rear outdoor outlet. Since then, both the front and rear ...
  A: I am assuming the voltage attempt was into the receptacle slots. The receptacles need to be pulled ...
Wall over3/2/2007
  Q: I purchased a 4000 watt wall over from Sears, and it came with a factory cable to connect to my ...
  A: The formula to determine amp draw is: Watts divided by voltage = amps, so: 4000 divided by 240 = ...
Electrical baseboard3/2/2007
  Q: I have installed 2x DBH 1500 electrical baseboard with double TSAT controller and one DBM 2000 ...
  A: Sandy I am a little unclear as to the question. With all three of these on, it only amounts to 20.83 ...
Kitchen lights3/1/2007
  Q: I have a florescent light in the kitchen I am trying to replace. It is controlled by two switches. ...
  A: Something in the process caused a short. A breaker can be tripped without appearing tripped. The ...
Blower control2/28/2007
  Q: My question is a bit unique but hopefully you can help. What I am trying to do is use an electric ...
  A: Jeff, do not by any means think this is the most unusual question I have been asked. I once had ...
wiring a cabin2/27/2007
  Q: We are wiring a cabin. Planning on having 2 heating and cooling units like found in a motel. They ...
  A: Before you install a permanent electrical installation, you will need at least a 100 amp service ...
Adding sub panel2/27/2007
  Q: Here's what I have and what I want -200 amp service in main -3 open slots to add breakers -In the ...
  A: Trust me on this Matt, there may be electrical devices that are not even invented yet you may want ...
switch with delay?2/26/2007
  Q: My sister just bought a 1960's era house and at least two of the light switches seem to have some ...
  A: Are you positive these are not energy saving bulbs? You can take a regular bulb if unsure and try a ...
buck boosters wiring2/26/2007
  Q: I have a powerformer model 216-1151-000 buck booster for a single phase tanning bed. I am trying to ...
  A: I do not have a total wiring diagram for this powerformer. I would call the manufacturers technician ...
electrical lighting: strings with 5 watt bulbs2/21/2007
  Q: How do I figure out how many amps I am using when I use my outdoor lights? In one outlet (out door ...
  A: The formula to determine amperage is: WATTS - DIVIDED BY VOLTAGE = AMPS So 10 100 watt ...
wiring2/21/2007
  Q: im trying to hook up a HID "multi-tap" ballast. it is for a metal halide aquarium light. i want to ...
  A: The ballast will also have a wire or terminal labeled common, this will be the connection for the ...
3-way lamp2/19/2007
  Q: yes, we tried new 3-way bulbs even. the 3-way was operating properly until about a month ago. Both ...
  A: If the replaced switch was a three way switch and you have installed new bulbs, Yes, I would ...
circuit not working2/19/2007
  Q: Today I replaced a wall light. I connected the wires on the new light in the same way as the old ...
  A: It is unusual for there to have been a red wire in this circuit. Pull out the switch and see what ...
Shock2/18/2007
  Q: We recently bought our home but since we move in we always get shocked if when we touch switches or ...
  A: Are you certain it is not a static electricity shock? Try walking around and touch metal objects to ...
Wiring fans to three way2/18/2007
  Q: I have a junction box that has a 12/2 wire that controls outlets and a ceiling light. There are also ...
  A: Steve is is unclear exactly how you want it controlled, but it is almost impossible to relay it in ...
thermostat2/16/2007
  Q: There is no terminal for the common wire so do i need to hard wire the wire to the common side of ...
  A: You can do it that way, however the indoor fan is energized by a 24 volt relay, either on a circuit ...
thermostat2/16/2007
  Q: I'm trying to install a new thermostat and i do not know if the common wire is hooked up. The old ...
  A: You are correct Bryce. It attach the blue wire to C on the stat and open the indoor unit and look ...
Room wiring2/15/2007
  Q: i have room in my new home, where every wall outlet is controlled by the same wall switch which also ...
  A: It depends on where the connections are made. If the switch is pulled out, see if there are two ...
No power in garage2/14/2007
  Q: I blew out a circuit in my garage. I have replaced the breaker and still do not have any power. All ...
  A: You will need a voltmeter. I would begin at the breaker and be certain voltage is present on the ...
single phase to 3 phase?2/13/2007
  Q: I am replacing a 220v single phase pressure fryer in my bar. I have found a good used one but it is ...
  A: It will require some rewiring of the circuit. First make sure you have the available circuit space ...
blower fan wiring2/13/2007
  Q: I am installing an "in duct fan" on a 6 inch branch. I'd like to wire this to the main blower fan ...
  A: You can get a relay with a 24 volt coil rating and from the indoor fan section terminal board where ...
condiut2/12/2007
  Q: what are the factors which need to be taken into account when choosing metallic and non metallic ...
  A: A metal conduit will get hotter than a non metallic conduit by high ambient conditions. It will also ...
low voltage2/11/2007
  Q: i have low voltage in the outlets on one wall of house.switches and outlets alike. also basement ...
  A: It appears there is a loose connection in the circuit. You need to start at the breaker to be ...
flying night light2/10/2007
  Q: Okay...this is going to sound odd, but does anyone know why this is happening???? I just bought a 30 ...
  A: I believe somewhere in this circuit, maybe even inside of the panel there are two wires that ...
furnace blower fan2/9/2007
  Q: Can you tell me why our Furnace/Central Air fan runs constantly? The previous homeowner mounted a ...
  A: You are correct. Depending on the age of the furnace, there is either a circuit board with a built ...
3 phase question2/8/2007
  Q: i have 220v 3 phase in my bakery,i was checking the panel and i have 4 wires 3 hots and 1 neutral ...
  A: This indeed appears to be a three phase service with a high leg. This is usually only found in ...
Solar converted to DC2/6/2007
  Q: I want to get a solar panel w/ alligator clamps for camping. I have a 12v car battery. My question ...
  A: I wish I could give you a more definite answer, but the fact is that every manufacturer is ...
wiring schematic for controlling one light from six different switches2/6/2007
  Q: Would you be able to help me? I am trying to wire one light source so that it can be turned on or ...
  A: I have never heard of this many switches on the same circuit. The problem would be that when ...
flat plug for horizontal outlet2/4/2007
  Q: How do I get a flat plug for horizontal outlet
  A: When the plug does not mate to the receptacle, the amps of the device usually will not work on this ...
3 phase question2/2/2007
  Q: i have 220v 3 phase in my bakery,i was checking the panel and i have 4 wires 3 hots and 1 neutral ...
  A: My concern is how were you checking the individual lines to determine the 3rd had 220 volts. There ...
Light Switch Cover Crooked2/2/2007
  Q: recently we had a partion wall added to our home that has 2 blocks of light switches each ...
  A: This could be sticky as the electrician who installed the box may have had it level but the drywall ...
static electricity2/1/2007
  Q: I know this isn't related to wiring but I couldn't find a category specific to my problem. Anyhow, ...
  A: I have never been asked a question by a Melvin, that is my Dad's name and my middle name. Actually I ...
Battery heated glove liners-suitable wiring1/31/2007
  Q: I work in the outdoors and was looking for pair of battery heated glove liners. Unfortunately all I ...
  A: Darryl it sounds like an idea you need to patent. The best I can offer would be to contact the ...
fan motor wiring1/31/2007
  Q: That is part of the problem. The old motor is gone now and I have no reference.I have an older GE ...
  A: Is the wiring diagram still intact on the unit door? The new motor wiring sounds strange not to have ...
Bathroom electrical plugs1/29/2007
  Q: The electrical plugs in 2 bathrooms on the same floor will not work although everything else in the ...
  A: Be sure the GFI is wired correctly. Old ones would work even if wired incorrectly but would not have ...
sauna plug1/27/2007
  Q: I just bought a sauna for my home. It is 20 amps. The plug is different. It says it is 110 V but one ...
  A: If you will notice, a true 20 amp receptacle has one slot with the T cut into the left side. This ...
home electrical problem1/25/2007
  Q: one day we waked up in the morning and half of are power work and the other did not. then we called ...
  A: The utility needs to check the line feeding your house. They may not have had a system problem, but ...
Attaching receptacle boxes to bare basement walls1/24/2007
  Q: Greetings. I am adding a 20 amp circuit in my basement to handle my work area, mostly Radio ...
  A: There is no way to attach it to the wall without making a hole. I used the plastic anchors with ...
new wirimg1/19/2007
  Q: i'm finishing a bare attic into bedroom.i will run 14/2 wire from panel with new circuit 15 amp ...
  A: If you have not already purchased the wire and breakers, I highly recommend using 12/3 on 20 amp ...
Use of junction box in attic1/18/2007
  Q: I am installing a new ventilation fan in the bathroom. Current wiring is a little short. Can I ...
  A: Yes you can install a junction box. The codes states the box must be accessible. I would interpret ...
lights come on after delay1/17/2007
  Q: I appreciate the care you've taken to answer my many questions. Yes, the lights are incandscent. I'm ...
  A: I totally agree Fred. I am sorry we could not pin point it closer, but some circuit problems require ...
Adding a GFCI to an existing light switch1/16/2007
  Q: J. Cook, Thank you for your time. I am having trouble wiring in a GFI outlet to an existing two ...
  A: This sounds exactly correct Jeff. One question, was the white connected directly to the existing ...
lights come on after delay1/15/2007
  Q: J, This is getting too electrical for me. If you agree this could take a long time to diagnose, ...
  A: Fred, I do believe it will cost more than $200 as it will be time consuming going through this ...
change 2 prong to 3 prong1/14/2007
  Q: is there any other way to add a ground without replacing the houses wire to go to a grounded plug ...
  A: A legal method is to make the circuit protected by GFI, or ground fault. This can be done by either ...
3 0r 4 way switches1/13/2007
  Q: I have a switch designation question on a home of mine. I'll do my best to discribe the situation. ...
  A: This is the same advice given to all with three and four way switch problems. Pick up a manual at ...
110v/220v1/12/2007
  Q: The thing is that the circuit breakers of the two outlets are separate in the box...each one is ...
  A: Joe, I am not trying to demean you in any way, but it is obvious from the questions you have no ...
lights come on after delay1/12/2007
  Q: I decided to test a switch by connecting its wires. After turning the circuit breaker on and off, ...
  A: You can test the breaker by using a volt meter and touch the exiting wire when the breaker is turned ...
110v/220v1/11/2007
  Q: I have 2 outlets together, each(110v), how would I go to change them to 220v? Do I need to rewire ...
  A: Since each 120 volt circuit has a black and a white plus the grounds, you can use just the black ...
lights come on after delay1/10/2007
  Q: I have a room with two rocker-type light switches (call them A and B) side-by-side at the ...
  A: Fred, with the delay and the dim light, I suspect a loose connection. It takes a while after the ...
Running 120 from a 240 feed.1/10/2007
  Q: I just purchased a home which was built in 1961. In 1992 an addition was put on the rear of the ...
  A: No, this was not legal. There is no true neutral in a 240 volt circuit this old, only a ground. In ...
Emergency stop button1/9/2007
  Q: I was wondering if you could send me a basic wiring diagram or explanation of a control circuit that ...
  A: This is by no stretch a simple wiring diagram. Also I do not have the ability on this site to create ...
Secondary extension1/8/2007
  Q: We recently had a 200 amp upgrade to our service pole by our local rural coop. When this was done ...
  A: Bruce, by code restrictions I would say yes, however there are so many local codes and the local ...
old switch1/7/2007
  Q: i disconnected the switch and both wires are hot when powering either wire at the light box.hello - ...
  A: There has to be either a damaged wire or wrong connection somewhere for both to be hot even with the ...
Hot-ground reversal1/6/2007
  Q: Last night, I had a series of receptacles go out and cut power to several appliances. I tested the ...
  A: It would actually be impossible to have the hot and ground reversed and any device operate. You can ...
Adding another light switch1/6/2007
  Q: My 5 basement lights are all tied together in one circuit to the same switch. I'd like to add a ...
  A: It will be simple if the other lights are on when you want to turn #2 off as the power will be ...
3-phase vs single phase1/5/2007
  Q: In our small performance space, only single phase power is available. We want to buy a stage ...
  A: Pretty hard on a volunteer. With all of the information provided, I knew you could assume you could ...
wiring a intermatic 3 way timer with a 3way dimmer1/5/2007
  Q: I'm reading the fine print on the instructions that came with my intermatic 3-way timer that I'm ...
  A: There is something I must be missing as I do not see the relation of a timer that would affect a ...
switches keep burning up.1/2/2007
  Q: Cook, I am currently residing in Kenya and have a problem with the domestic wiring.I need your help ...
  A: I am not in my office where my code book is at, I am not sure what 2.5 mm equates to in gauge size, ...
one power source, three lights1/1/2007
  Q: I installed three light fixtures in my basement. I have one line coming from the power panel going ...
  A: From either of the two terminals on each switch, connect a short piece of black wire and connect all ...
circuit breaker12/31/2006
  Q: I recently purchased a home that was built in 1986. and yesterday one of my circuit breakers tripped ...
  A: It appears a new circuit has been added, and it may have a problem. You can try removing the wire ...
how to wire light, light, light, switch, switch?12/29/2006
  Q: I am installing a three way switch and attempting to find out how to wire this if I desire the 3 ...
  A: You are not alone Greg, I get a number of questions regarding three way circuits, and it is the most ...
Attic exhaust fan wiring12/28/2006
  Q: I'm installing an attic exhaust fan and wanted to know where is a good source of power to tie into? ...
  A: No more that this fan will pull on the circuit, any available circuit will work. Be careful ...
GFI wiring12/28/2006
  Q: J, i have in my bathroom a light-switch/socket combination switch and have just installed a GFI ...
  A: I am not sure what the question is. If the receptacle will trip with the test button, the receptacle ...
nec wireway12/21/2006
  Q: It might seems like I am gonna ask to do my homework but it is not.Currently I am studying NEC ...
  A: I agree with you this answer is incorrect. I could not locate any table these figures came from ...
electrical wiring12/20/2006
  Q: Mr J Cook Now i understand how the earth wire is connected. I understand that it brings the leaking ...
  A: If there is a short in any device, yes there will be voltage present at the ground rod. You can ...
Doorbell Wiring12/20/2006
  Q: There are two white single strand (maybe 16 gauge) wires to the buzzer. There is no voltage to the ...
  A: Try this configuration. Connect one of the white chime wires to one of the transformer wires, it can ...
electrical wiring12/19/2006
  Q: The kind of test pen i mentioned can only function if it is touched at the tip by the human hand, ...
  A: There is a separated bar in every panel that all grounds connect to from the house circuits. This is ...
2 hots in old 3-way switch?12/19/2006
  Q: I have two 3-way switches that connect to a ceiling fan/light in a 1925 house. We moved in 6 months ...
  A: On any three way switch, there will be two hot wires and one traveler wire. This way regardless of ...
Power Inverter12/18/2006
  Q: I want to get your opinion on the feasibility of using a power inverter to run things during power ...
  A: The main problem I see is the voltage drop as the battery discharges. It will damage a compressor. ...
Doorbell Wiring12/16/2006
  Q: I'm removing a 4 bell chime and replacing it with a simple two tone chime. The old chime had six ...
  A: Two of these wires will be for the button circuit. You will need to remove the control button at the ...
220-240v plug to 110-120v plug12/15/2006
  Q: I maitakenly purchased a hot water heater for tea, from England, and neglected to tell them it ...
  A: It will be taking a chance as the heater may not work on 120 volts, but if it will work at all on ...
flickering lights in winter12/15/2006
  Q: I live in an old apartment building and I'm sure the wiring isn't great. Last fall, my lights began ...
  A: I agree it is very likely another tennant. I would let the building owner know in writing as it ...
wire outlet to light switch12/14/2006
  Q: OK...I have a old light switch in my laundry room. It only has ONE black wire and ONE white wire ...
  A: You will not be able to wire a receptacle from this switch, because there is no neutral in this box. ...
wire outlet to light switch12/14/2006
  Q: have a single pole light switch to my laundry room. Want to add an outlet, 4 way as I see it, 2 ...
  A: I am a little confused Daniel. Are the connections you are describing on the receptacle? It seems ...
Welder hook up12/13/2006
  Q: This is for in my garage. I need advice on proper electrical hook up. I have a 200 amp service. I ...
  A: I am assuming there is no panel in the garage now. I would install a 125 amp main lug panel without ...
circuit flickers12/11/2006
  Q: I have a 15 amp circuit that flickers and I replace the breaker thinking that might be the problem. ...
  A: It most likely is arcing in the breaker, but most likely also it is caused by a short somewhere else ...
GFI's at box12/10/2006
  Q: J I have a small cottage (about 320sq ft) on my property that has its own power line and meter. ...
  A: Over time, these receptacles are known for problems. I know it is more expensive initially, but I ...
stove and dryer12/10/2006
  Q: can i or is it safe to run a stove and dryer on 1 double 40amp breaker using #8 copper wire ( ...
  A: They should be on separate circuits as if both are operated, the circuit wiring will overload and ...
Partial Power from A Circuit12/9/2006
  Q: Two days ago I purchased an oiled-filled heater to use in my home office. Yesterday, I had the ...
  A: The breaker tripped because the combination of the printer and heater overloaded the circuit. The ...
Baseboard Thermostat Wiring for 120v12/7/2006
  Q: The wiring diagram that came with the thermostat seems straight forward for 240 but is confusing ...
  A: I agree it is confusing. You will in fact only use one set of wires if the thermostat has two reds ...
heating a breezeway12/6/2006
  Q: I have an enclosed 4 season breezeway. It is on a concrete slab. The dimensions are 15'x 11. There ...
  A: It is not that simple. To totally determine the exact requirements it would entail completing a ...
duplex outlet12/5/2006
  Q: I need to replace a duplex-split circuit- outlet. I don't know how the old one was pulled out as I ...
  A: If you still want this to be a split circuit receptacle, there is a very thin tab between the two ...
56V12/4/2006
  Q: I am re-wiring my family room. I have installed 6 recessed lights. I have 5 outlets in the room. ...
  A: Yes it should. There is most likely a loose neutral connection. You can start at the breaker to ...
Panel Box ?12/3/2006
  Q: I need to feed a new spa that I just bought 60 amp 220 volt GFI service. I have wired in my own ...
  A: They not only care, it is illegal in most jurisdictions to remove this tag without their approval, ...
Outdoor post light12/2/2006
  Q: How do I install a photo cell on a outdoor post light. It is not a single bulb light so I can not ...
  A: All photo cells I have seen have a black, red, and white. The white will connect to the other whites ...
240V Electric Oven.. 12AWG Leads??12/2/2006
  Q: I am installing a Kenmore electric convection oven. I noticed that the factory supplied leads are ...
  A: It is amazing what manufacturers can get by with. Actually however if you notice, the #12 they are ...
New electrical installation12/1/2006
  Q: I have a new installation, a room which is 4.5m by 7m. The service power is a special power meaning ...
  A: If the meter is more than 6 feet from the panel, there will have to be an external disconnect ...
Electric hpt water heater11/30/2006
  Q: We bought a new electric hot water heater.It keeps blowing the main braker and the hot water does ...
  A: The physical size will not determine the wattage of the elements. Look at the name plate and see ...
digital thermostat11/30/2006
  Q: we are trying to replace our old thermostat with a new digital one. we have an older house with old ...
  A: What terminals were the wires connected to on the old stat? A mechanical stat does not require both ...
Ground Fault outlet outside11/29/2006
  Q: I have one GFCI outlet on the outside of my house and I just plugged in my Christmas lights and put ...
  A: It may be the receptacle is not powered. It has to be powered for the test button to operate. Look ...
Double pole single throw switch11/21/2006
  Q: I have a single pole switch in place which switches/powers a socket and I would like to know if a ...
  A: Each throw of a breaker switch should disconnect one circuit, a double pole would be a single 240 ...
Electrical code outside wiring11/21/2006
  Q: I understand your advise based on lessons learned, thanks. I do not think my question was clear, i ...
  A: I did understand and Table 300.50 states that rigid metal conduit burial depth is 6 inches and note ...
flashing lightbulb11/20/2006
  Q: I have recently replaced my lightbulbs at home with energy saving ones. It has uncovered a problem ...
  A: Find the circuit breaker that controls this circuit and with it off, remove the wiring from the ...
Circuit Breaker11/20/2006
  Q: I have done all the electrical work around my house, the only thing that conserns me is adding a 20A ...
  A: It will have to be from the panel, a dedicated circuit for the unit only. There are live wires still ...
Electrical code outside wiring11/19/2006
  Q: I need to run conduit to provide 220 service to an outside hot tub and 110 service to two electrical ...
  A: This should be sufficient, but the local inspection department will have final authority. I would ...
extra hot wire11/18/2006
  Q: I have a new house.I choose to install my own ceiling fan. The outlet was pre-wireed with two hot ...
  A: I am not sure if this fan is switched or the intention was to use the fan switches. If there are ...
Wiring11/17/2006
  Q: I have a small problem. What I have is a wire comming from the Box, I want to tap into that, to ...
  A: I am assuming this is a circuit wire with a hot wire and a neutral, not a switch leg. With the power ...
open ground11/16/2006
  Q: i just bought a 150 year old wood frame house. The inspector says in the living room there are some ...
  A: It would be difficult to tell when the last electrical upgrade was on this home. The existing wiring ...
Outdoor Wiring11/15/2006
  Q: I am planning on building a detached shed/greenhouse in the future and would like to make provisions ...
  A: The only problem here is the 40 amp breaker. #12 is only rated for 20 amps, so it can not be on a 40 ...
panel upgrade11/14/2006
  Q: how do you do a panel upgrade.what are the steps
  A: You first have to determine what size is the existing service. Most residential average size homes ...
BREAKER WIRING11/14/2006
  Q: AFTER PURCHASING THE BLACK & DECKER COMPLETE GUIDE TO HOME WIRING, AN READING IT CAREFULLY, I FOUND ...
  A: It is illegal to have more than one wire directly connected to a breaker. If you have room for ...
power surge11/12/2006
  Q: when my heat comes on,just when the fan loads up.All the lights get brighter.The are less bright ...
  A: It may be the motor itself is causing a power surge. The actual voltage needs to be checked on a ...
gfi outlets11/12/2006
  Q: I im trying to wire up gfi's in a kitchen wher there were none befor i got one wired up it had 2 ...
  A: A GFI has a definitive line and load side. There will be a black and white connection point on the ...
upgrade electrical to 200 ampere11/11/2006
  Q: I want to install an electrical tankless water heater in my 1980-built condo. The heater ...
  A: First, this heater can not be installed with your present service. It would require a major upgrade, ...
Adding a receptacle11/10/2006
  Q: I have one inside receptacle in my garage on one end of the garage and it would be convenient to ...
  A: If it is wired from the light, it will only work when the light is on, unless the circuit back feeds ...
Outdoor spa wiring11/10/2006
  Q: I'm putting in a used hot tub. The tub's electrical panel reads 240V/40A. In preparing my house ...
  A: The manufacturer has to cover their proverbial butt. #8 copper is rated for 50 amps, so with the ...
Combo switch outlet wiring11/9/2006
  Q: Good Morning, I have a GFI controlling a regular outlet and another GFI in the kitchen. I want to ...
  A: I do not have this wiring diagram, but based on the terminal markings it should work as follows: 1. ...
Garage wiring11/9/2006
  Q: I am adding electric to a detached garage. When I began my work, I was told that unless I was adding ...
  A: This would not be a legal installation by code, so I can not advise other than to say it needs the ...
electrical wiring11/8/2006
  Q: when i plug a hairdryer or drill into the outlet, the lights dim. not a lot just a little. can you ...
  A: This is common on a low amperage circuit. A 1500 watt hair dryer is pulling 10 amps. On a 15 amp ...
electric baseboard on when off11/8/2006
  Q: we installed new baseboard heaters 3on one breaker and 2 on another the thermostats are on the ...
  A: Something is wired incorrectly for the thermostats not to turn off the heaters. Normally the ...
# cables in plastic conduit11/6/2006
  Q: I would like to run 3 individual #2 copper wires (THHN from Home Depot) and 1 #6 ground to a 125A ...
  A: The first item is the #2 aluminum. You have to use the 75 degree C column for ampacitiy, and #2 ...
Installing a Combination Switch/GFCI11/5/2006
  Q: I want to replace a combo outlet switch that is right next to my sink with a new Combination ...
  A: On the combination units I have seen, the circuit hot wire will be connected to the black outlet ...
switch/light11/2/2006
  Q: I live in an upstairs flat. downstairs they have a flood light outside. I'd like to connect to that ...
  A: It will have to be determined by opening the existing light switch to see if the entire circuit is ...
Basesboard Heater10/31/2006
  Q: can i install a 120v 8.5amp baseboard heater on a circuit that is controlling the hole beadroom and ...
  A: It depends on the loads already on the circuit and what the circuit is fused at. If the circuit is a ...
sub panel10/31/2006
  Q: i am finishing my basement and need to add a sub panel. i will have central heat and air,electric ...
  A: What can be added is determined by what your main panel rating is now and how much of a load is on ...
Breaker popping10/31/2006
  Q: I just bought an older home and am remodeling the bathroom. I didn't change much moved a couple ...
  A: 1. Yes, you are within code to continue with #12 as long as it is not fused at more than 20 amps. 2. ...
Thermostat10/25/2006
  Q: I am replacing a double line break thermostat for an electrical baseboard heater. The new ...
  A: The original thermostat was only breaking one of the power legs to control the heater. This new stat ...
wring a range10/25/2006
  Q: J Cook, I am remodeling my kitchen and having trouble with my range. I have power for the light and ...
  A: The slim breaker is catching the same power leg on each breaker. It will require either a standard ...
100 amp subpanel in basement10/25/2006
  Q: we are finishing our basement and I'm going to install a subpanel for feeding the new circuits. Our ...
  A: In most homes this new, there will be cross braces within the walls making it impossible to feed ...
Heated Driveway power requirements10/18/2006
  Q: Trying to make sense of an electrician's quote and to right-size what I am looking for. Some ...
  A: 1. Unless an exception is listed, and I can not locate an exception for this cable, a continuous ...
Possible grounding problem10/18/2006
  Q: In my home the lights become very bright when appliances such as microwave oven or the furnace ...
  A: This is very unusual as it is usually the other way and they dim. If you have a meter, check the ...
220 Volt wiring10/18/2006
  Q: I recently purchased a Jet 1 3/4 horse table saw. It has the capability to be run with either 110 V ...
  A: As long as the two will not operate at the same time, you can branch off to another receptacle. It ...
open neutral10/17/2006
  Q: i rented a florida home on the coast. 110 fans, lights, stove lights, microwave, and other things ...
  A: The service neutral bonds to the ground in the meter base and/or the panel. When the neutral ...
Wiring Crawl Space10/17/2006
  Q: I want to finish one section (11 x 13) of my crawl space (18 x 13 total) for my kids as an extra ...
  A: It should be no problem using the existing wiring. Without the specifics of the wires you have now ...
No Power in Bedroom after Ceiling Fixture Replacement Attempt10/17/2006
  Q: I went to replace a ceiling fixture in the bedroom with a 2 light flushmount. When i took off the ...
  A: The white wire that was connected to the old fixture black wires should have been color coded black ...
Honeywell VisionPRO Thermostat10/17/2006
  Q: Oh well, I just hate the fact that I have a professional servie that costed me a good bunch (part & ...
  A: I have three heat pumps and on all three I am using the Carrier Totaline Gold programmable model ...
240V Subpanel10/16/2006
  Q: I have recently added a 240v outlet in my garage for an electric heater. I ran 8awg wire 65 ft, ...
  A: You could actually install a 200 amp panel and feed it from the #8 wire as long as the breaker ...
No power to ceiling fixture and receptacle10/16/2006
  Q: I plugged a heavy vaccum into a receptacle which crated a short knocking out a ceiling fixture ...
  A: The tester may not be indicating full power. The only way to verify is to use a meter and make sure ...
How to hook up a 10/3 wire @ plug & panel?10/16/2006
  Q: I have an 10/3 30 amp wire run for a construction heater 240 volts. Inside the wire there is a grnd ...
  A: You are correct in the panel that the black connects to one side of the double pole and the red to ...
breaker box10/16/2006
  Q: I live in a apartment where the neighbor's breaker box is in my living room. For the past couple ...
  A: It is not uncommon for a breaker to buzz slightly when a large appliace such as an a/c compressor ...
Honeywell RTH6300 to a Comfortmaker RSJ II gas heater/central air10/15/2006
  Q: Classic amatuer handyman mistake that maybe can be solved. In an eager attempt to install a new ...
  A: R, the Hot leg of 24 volts is always the red, C, the common of 24 volts can be almost any other ...
power to switch(recessed lights) to double switch(separate lights)10/15/2006
  Q: I am rewiring my house and have laid out one of my circuits as follows - with a 14-2 wire I am going ...
  A: In the single switch box, you will have the incoming hot circuit, the circuit feeding the two lights ...
Dimmer Switch on big Chandelier10/15/2006
  Q: I installed a large chandelier with 17 40 watt bulbs for a total wattage draw of 680 watts. After ...
  A: In my encounters with dimmers, if let on very long they all get very hot. I do not like it and do ...
Crossed Thermostat wiring10/14/2006
  Q: Answer - I need to know if you have a heat pump or a/c with some other type of heat. Also I need ...
  A: With an O terminal, it indicates you have a heat pump. The red wire will connect to RC with a jumper ...
installing an outlet in my bathroom10/14/2006
  Q: I'm wiring a bathroom outlet from under the house. I would like to "splice" off an exsisting wire ...
  A: The splice is required to be in a box with a cover. The wire will have a black hot wire, a white ...
portable generator to home curcit box10/13/2006
  Q: I want to have an electrician hook up an outlet on the out side of my home to my circut breaker. ...
  A: It is illegal to install it the way it is described. A transfer switch has to be installed so there ...
Wiring Dilemma10/13/2006
  Q: I have a two-story house that was built in 1993 with no ceiling light fixtures in the bedrooms and ...
  A: Unless the wiring is accessible to the switch, it will be virtually impossible to fish wire to the ...
Neutral Lead Fried in Circuit Box10/12/2006
  Q: Home - New Contruction 3yrs old Circuit Box - Cutler Hammer Hi Mr. Cook, A couple days ago I ...
  A: I would not use any of this wire as it has been overheated. It is a short run to the meter from the ...
4way switch delete10/12/2006
  Q: I need to delete a 4way switch, can I attach the two black wires together and electrical tape them ...
  A: A four way combination is a somewhat complicated circuit. It depends on how these are connected to ...
wiring10/12/2006
  Q: We recently moved into a home that has a partially finished basement. Some electrical is already ...
  A: It is common when under construction to power a circuit from the temporary service in order to ...
Honeywell VisionPRO Thermostat10/11/2006
  Q: I have a Honeywell VisionPRO TH8000 Series thermostat. I just want to know if my wiring is correct. ...
  A: Everything else looks good. The white wire is the strip heat control wire. Connect it to the Aux/W2 ...
45 amp breaker on 10 guage wire10/11/2006
  Q: Recently, I had a repair person tell me that I had a 45 amp breaker of the outside unit on 10 guage ...
  A: My first comment is this can not be an electrical contractor as he is giving the industry a bad ...
Baseboard heater wiring.10/11/2006
  Q: I am finishing my basement and need to re-run a cable to my baseboard heater in order to eliminate a ...
  A: This is a common misconception about electricity. The neutral has been called the return path for ...
doggonedesign@hughes.net10/10/2006
  Q: I have a small cabin and the breaker marked 'test' keeps flipping off for no apparent reason. Any ...
  A: This is a GFI or Ground Fault breaker. It trips when there is moisture somewhere in the circuit. It ...
Open Neutral in home?10/10/2006
  Q: Yesterday found that a circuit in my home is inoperable. 15amp circuit does not trip. Getting ...
  A: It may be a damaged wire. I know it will be time consuming, but start at the first device on the ...
Thermostat Replacement10/9/2006
  Q: need to replace my central heating thermostat. The new one says to connect Live to Com, Heater to ...
  A: This appears to be a line voltage stat. I am not sure what the resistor was intended to do. Normal ...
Grounding 200A Service Panel10/9/2006
  Q: Mr. Cook, I've been searching alot to find an explanation to this question. I have a lake ...
  A: You will need the ground wire connecting to the ground buss in the sub panel and connected to the ...
Whole house fan runs backwards10/8/2006
  Q: I have a whole house fan installed in my home. The fan blades seem to run backwards so that the air ...
  A: These motors should be reversable. Check the motor diagram. There should be two connections points ...
Gang Box in Cinder Block Wall10/8/2006
  Q: SITUATION: ----------- The exterior walls of my home are made of cinder block. There are a number ...
  A: You can use these type of boxes. Two problems will be getting the wire fed into the box and cutting ...
Short maybe?10/8/2006
  Q: appreciate you anwsering questions for everyone. My problem is, a 1993 Chandelier mobile home. I ...
  A: Some of the original wiring may have been crossed. The only way to be certain which is the hot wire ...
Wiring questions10/7/2006
  Q: One thing I see in print a lot is that many codes require 8 inches of workable wire to extend beyond ...
  A: The inspectors I have dealt with require the 8 inches for rough in, but I have never had one ...
transfer switch and generator10/7/2006
  Q: I am looking to get a generator for my home. I have just about ruled out the stationary units since ...
  A: I know this sound feasible, but most generators are not designed for all loads at once. The formula ...
Standby generator 70 amp not made?10/6/2006
  Q: I purchased the guardian 13kw standby Gen., and the House circut box is SquareD, and only excepts ...
  A: The formula for calculating wattage to amps is: Watts divided by volts = amps So a ...
Possible voltage on neutral wire and cable tv related problem10/6/2006
  Q: For several months I have been having problems with my digital cable tv freezing up and loosing ...
  A: If the ground wire is not connected to the metal housing, touch one lead to the housing and the ...
Electricity consumption10/6/2006
  Q: I have moved into a house which has 12 volt recessed lighting in most rooms. I am worried about the ...
  A: The amp draw of any device is what is converted to kilowatts for billing purposes and the formula to ...
Panel is full10/5/2006
  Q: I think its 200amp rating...... as my house is all electric...I have Square D panel box main service ...
  A: I do not recommend using the mini breakers. The better solution would be to install a sub panel near ...
Antique chandelier installation10/5/2006
  Q: I have a chandelier which is wired with what I believe to be lampcord(looks like speaker wire). ...
  A: The two wires may have appeared identical, but the neutral wire has ribbs on the outside jacket of ...
Running a 60 Amp Circuit10/5/2006
  Q: I am running a circuit from an outside panel (new 200 amp service)for an inside the home air handler ...
  A: The subject states " Running a 60 amp circuit." If you are running a 60 amp circuit, you will need ...
220 wiring10/4/2006
  Q: I recentlly bught a new three prong dryer. The dryer runs but does not heat. I was told that the ...
  A: You may have made a common mistake checking the voltage. In order to ensure you have 240 volts, you ...
Is it arching?10/4/2006
  Q: we just recently purchased our home in March of this year and all has been well until recently we've ...
  A: If there are any GFI receptacles on this circuit with the test and reset buttons, replace them being ...
Doorbell Transformer Problem10/4/2006
  Q: I have recently purchased from Home Depot a Heath®wired doorbell (96M-B) and lighted doorbell ...
  A: I can not say to exceed the manufacturers ratings, however I can say that in my opinion they have to ...
Can Low voltage affect my television10/4/2006
  Q: I have a 50" projection screen television that's about 8 years old. I just moved to a new place and ...
  A: It is on the low end, but almost every electric device is designed for a voltage tolorance, high and ...
wiring question, 3way/4way lighting question10/3/2006
  Q: In our hallway we have two lights that turn on together. There are three light switches, two ...
  A: One of the switches is either bad or wired incorrectly. To work the way they originally did, one is ...
Generator hook up to home electric panel10/3/2006
  Q: I have a 5500 watt generator and I want to hard wire it to the house so it can be used to run the ...
  A: You have to use a transfer switch with a generator. The easist method is to install a small sub ...
what are the basic colors of wires in a home10/3/2006
  Q: what colort wires are there and what do they stand for as neg pos and ground
  A: The most common are called a two wire cable even though they have three wires. The ground is not ...
receptacle and dimmer switch10/3/2006
  Q: I recently replaced all of my light switches and receptacles in my home. Everything went fine until ...
  A: It is pretty confusing. The cable with the red wire also has a black and white plus a ground wire. ...
Baseboard heater wiring problem9/27/2006
  Q: I am changing one my electrical baseboard heaters (first time I do this). The previous heater was ...
  A: On most baseboard heaters, the thermostat is breaking one of the hot legs. Most likely you are ...
switching circuit breakers9/27/2006
  Q: We are trying to run a treadmill that is on a 15 amp circuit in our bonus room- with all the fun ...
  A: Unfortunately this is all too common of a problem. I rewired my 100 year old home and used #12 wire ...
Additional light switch9/27/2006
  Q: I wish there was a way I could email you a sketch of the circuit. It appears to me I haven't been ...
  A: I am pretty sure I understood the method, but running a single wire separated from the neutrals and ...
Copper-clad aluminium wire9/25/2006
  Q: We just moved into a new place and, as I am replacing (30 year old and easily cracking) electric ...
  A: There was a major problem with some of this type of wiring, not necessarily the particular wiring ...
Wiring bathroon exhaust fan with heater lights and nite light9/25/2006
  Q: How do you wire the switches and what king of swiches do I buy? Backgound: thinking of buying a ...
  A: You can eliminate some of these. From the appliance, there will only be one white neutral and one ...
Wiring in an electric motor9/24/2006
  Q: I'm not sure if this is in your area of expertise, but I thought I would try. I recently bought an ...
  A: Dan, unfortunately motor manufacturers do not use standard wiring. You will have to contact the ...
FLourescent Tube, Low Voltage Halogen Mix9/24/2006
  Q: I have a lighting circuit feeding a shop sign containing 12 flourescent tubes. The tubes are ...
  A: I do not see a problem as long as the circuit is not exceeded. The formula for determining the ...
120 to 2409/24/2006
  Q: We are replacing our electric cooktop that required a 120/240 volt wire connection. Now I don't ...
  A: Correct that you need to do both. The 120 circuit may not trip the double breaker. Replace the ...
Thermostat Wiring9/23/2006
  Q: I would like to install a thermostat that will turn on the fan of my furnace only and only when the ...
  A: Sounds like a great idea. You can use the simple Honeywell " Round " thermostat, called so because ...
tapping from a/c cu cir for lts9/22/2006
  Q: I've been searching for a code ref regarding the prohibition of tapping off a condensing unit feed ...
  A: Actually article 440.34, combination loads, does allow this providing the feeder wires are sized for ...
Baseboard heating in every room?9/22/2006
  Q: We are about to purchase a home. It was built in 1967. It uses both baseboard heat and a wood ...
  A: I would investigate this further. It may not qualify for homeowners insurance with no heat in the ...
grounding when rewiring old outlets9/21/2006
  Q: In short, I will do the GFI in the ones that allows this, but in the other 2 I can not (unless I ...
  A: Another option is locate the circuit breaker feeding any other receptacles and replace this breaker ...
grounding when rewiring old outlets9/21/2006
  Q: I am finishing half of my basement and there are olde wiring which I want to replace with 12/2 (old ...
  A: The legal method is to locate the first receptacle on this circuit, replace it with a GFI receptacle ...
Sub Panel9/20/2006
  Q: I am installing a sub-panel in my basement. I wanted to have one or two 15A breakers for outlets ...
  A: The least expensive panel due to supply and demand is a 125 amp panel. It can be a main lug panel, ...
230 volt9/20/2006
  Q: I need to run 240 volt wiring to the garage for my 230 volt welder I just bought, but the house fuse ...
  A: Inside of the panel, there are two separate bars that the incoming service connects to creating two ...
low voltage wiring9/19/2006
  Q: We are having a problem with the low voltage wiring. The electrician cannot figure it out. Our ...
  A: I would say there seem to be multiple problems. The lights that will not go off may be a defective ...
replace toggle switch w/timed switch9/19/2006
  Q: Good morning; I want to replace an indoor toggle switch with a digital timer switch. The switch ...
  A: The existing switch was used as a junction for a circuit to pass through. It most likely was the ...
Electrical Wiring - Changing a Light Outlight to Dual - Both Light and Plug9/19/2006
  Q: We are trying to change an exsiting light switch to make it a a light and a plug. The wires that ...
  A: A receptacle requires both the hot black wire and the white neutral wire. One of the black wires is ...
Baseboard heater wiring9/18/2006
  Q: I meant 1000wattsI have 200amp service. Bought 100watt Cadet baseboard heater, 240V. Do I need to ...
  A: If this is the only heater, it will only be pulling less than 5 amps, so #12 will be fine. You will ...
Heat Pump Electrical Hookup9/18/2006
  Q: I am installing a new 5-ton heat pump, both air-handler and outside condenser. The outside ...
  A: I will give you the proper wire sizes, but my first concern is the 5 ton unit. I am in a situation ...
old lamp rewire9/18/2006
  Q: we have a "y" shaped lamp about 50 years old. it has a 2 bulbs with two separate switches in the ...
  A: Each light socket requires two wires. The hot wire black wire from cord will connect to one side of ...
Circuit breaker to the AC9/17/2006
  Q: My AC was not working properly....the fan in the house was running but the air was not cool. I ...
  A: The indoor unit is on a separate breaker than the outdoor unit, so the indoor fan can operate ...
voltage9/17/2006
  Q: Re: New installation of a two-speed whole house fan. I have tapped an attic junction box for 120v ...
  A: You are getting what is considered a false reading between the hot and the hi/low lines. For ...
Home Wiring...replacing 2 prong outlets9/16/2006
  Q: I recently purchased an older home with the original wiring still used in the home. I want to ...
  A: Correct. Any circuit with #14 wire should be fused at no more than 15 amps. These circuit breakers ...
Underground fault9/16/2006
  Q: This problem has stumped three local electricians. We direct buried a heavy, 600' , 220 volt, ...
  A: First, if you read 0 between the two hot wires and voltage between the hot wires and ground or ...
Making a 2 wire line into a 3 wire curcuit9/16/2006
  Q: I want to install an outlet where I can plug in an instant hot water heater and a garbage disposal ...
  A: The circuit wiring is actually the black hot wire, the white neutral, and a bare or green ground ...
Electrical Wiring9/15/2006
  Q: J, I have installed 2 low voltage pendant light fixtures in my kitchen each with their 11.7 v ...
  A: When any device is only making a partial connection, it can pull a great deal of voltage from the ...
3 pronged outlets with no ground9/14/2006
  Q: I just bought a 60 year old house. The entire house has 3 pronged outlets but no ground wire to any ...
  A: You need to make a couple of changes. First, any receptacle connecting the ground to the recepacle ...
Wiring Coming into Breaker Box9/14/2006
  Q: I have wiring coming into my breaker box from both the top and bottom. All top-entry wires come ...
  A: You may be at the mercy of the inspector. Now that it is a noted problem, it will have to be ...
range wiring9/14/2006
  Q: I purchased a new dual fuel stove. Siemans model hd2515u.My previous stove is gas and I need to set ...
  A: The 4 wire cord is a fairly new code change, so any appliance with a little age will have a three ...
Light Switch9/13/2006
  Q: My kitcen light switch stopped working. It is used to turn off and on the light but the light also ...
  A: A three way switch has a definitive common terminal. The wires have to be properly connected for the ...
Wiring Plug for well pressure switch9/13/2006
  Q: I would like to set up my well to use a portable generator durig power outages. The generator has a ...
  A: What you will need is a manual transfer switch. A low amp switch is not very expensive. The incoming ...
Outlet9/12/2006
  Q: I have a question regarding continuity. Recently, I was performing some outlet maintenance with the ...
  A: When I have encountered this, a circuit that was off I was working on was sharing a neutral with a ...
Open Ground9/12/2006
  Q: ..I've got a 15 amp feeder coming out into the garage, it connects into a GFCI plug. From the plug. ...
  A: You definitely need a ground on the GFI connected to the ground screw and pigtailed to the other ...
Electrical Wire Cabling9/12/2006
  Q: Is there any industrial guideline which states the distance between the use of one cable support (be ...
  A: I did not locate anything in the code book other than a general statement that cables should be ...
using existing fan light wiring for recessed cans9/12/2006
  Q: I have a fan with a light that each have seperate switches. I would like to remove the light and ...
  A: I cannot say what color wires you will encounter. You will have to open the fan junction box to see ...
electric baseboard9/11/2006
  Q: We are still missing each other. What I want to do is... 1-run 10-2 from the box to the attic 2-once ...
  A: As I stated, I have not been a part of any of this question thus far, but as you are describing this ...
Open Ground9/11/2006
  Q: ..I've got a 15 amp feeder coming out into the garage, it connects into a GFCI plug. From the plug. ...
  A: Are the circuit wires connected to the line side of the GFI and the continueing circuit connected to ...
how to troubleshoot electrical problem9/10/2006
  Q: I have a real 'head-scratcher' Problem under-cabinet lights come on when the kitchen water faucet ...
  A: I can see how this could be a head scratcher. I agree it seems to be a ground problem. On a home ...
basic wiring9/10/2006
  Q: When installing a light what happens if you have incorrectly joined the white wire to the black, ...
  A: This is called reverse polarity. It is very dangerous for a light as the hot wire on a bulb socket ...
Short run PVC conduit at Grade for Emergency Generator?9/9/2006
  Q: J Cook, I’m installing a 16kw Auto Standby Generator. The connection box will be mounted on my ...
  A: I had a mobile home set up for one week for a Nascar event and the trailer was for a fire command ...
3 way dimmer switch9/9/2006
  Q: I just want to make sure we have our 3 way dimmer switch working properly. On one side is the 3 way ...
  A: A three way switch combination is the most difficult to describe without a diagram. It sounds like ...
time lag fuse9/9/2006
  Q: i am asking about a fuse type which is called time-lag fuse what is it and why it is named so? if ...
  A: Fusetron is a very popular fuse manufacturer, you may be able to locate this site. A time lag, or ...
4-prong dryer conversion (follow up)9/9/2006
  Q: On 2/25/06, you answered a question about switching out the 4-prong cord on a dryer with the old ...
  A: A jumper is just a short piece of wire to connect two terminals. A #10 piece of wire needs to ...
Electrical9/8/2006
  Q: My hot tub keeps blowing the circuit breaker on the panel. I checked the fuse in the electrical box ...
  A: A live panel is very dangerous. You need to have an electrician replace the breaker, this is the ...
double tapped circuit breaker9/8/2006
  Q: When we bought our home the home inspector (not an electrician) said we had a circuit breaker which ...
  A: A single line can not possibly be a 240 volt circuit. If two lines were double tapped, that is ...
WIRING PROBLEM--9/8/2006
  Q: I HAVE 2 NON-WORKING RECEPTACLES IN A TOWNHOUSE I RECENTLY MOVED INTO THAT READ "OPEN NEUTRAL" ON MY ...
  A: It means the neutral wire is loose somewhere in the circuit. The only way to locate the connection ...
GFCI Added on outdoors9/7/2006
  Q: I have a 15 amp circuit with the following: Switch 1: 2 indoor halogen lamps 100 watts combined ...
  A: The formula to determine a circuits load is watts divided by voltage = amps. So 2 100 watt bulbs = ...
100 amp subpanel9/7/2006
  Q: Would I have to continue the conduit inside my house to the main box? If so this would be difficult ...
  A: With the conduit problem, I would go to a disconnect at that point and use an indoor cable to ...
1950s light switch/wiring9/6/2006
  Q: Our home was built in 1954 with switches about 3/4"x 1" that, when pushed, create an audible ...
  A: There appears to be a loose hot wire connection somewhere that is occasionally touching this light ...
Voltage at light fixture9/6/2006
  Q: Each of the three bedrooms in my house has one light swtich controling an over head light fixture. ...
  A: The only way to determine if there is a problem would be to test these lines with a voltmeter. A ...
Light Switch9/5/2006
  Q: My light switch in one of my bedrooms was not working and my brother decided to help out. He opened ...
  A: I hope someone learned a lesson to label the wires as they are connected. You need to get a volt ...
100 amp subpanel9/5/2006
  Q: My follow up question is: Do the wires have to be copper (copper is so expensive) or can I use ...
  A: You can run aluminum, but the size is dramatically larger with aluminum. For the two hot legs, it ...
3-way switch9/5/2006
  Q: I just bought a house in the raleigh area and during the home inspection they found a light with a ...
  A: The ground positively can not be spliced to a neutral, if there is not a ground wire with the ...
100 amp subpanel9/5/2006
  Q: I would like to wire a 100 amp subpanel to my barn. The barn is about 200 feet from my house and ...
  A: For this long of a run, you will need two #1 copper for the hot legs, one #3 for the neutral, and ...
Fan switch wiring9/5/2006
  Q: ok.. ill try to keep this short and simple.. I have existing light im taking down and installing 2 ...
  A: The problem you will encounter is there is only one hot wire to the existing light. The dimmer ...
electrical breakers9/4/2006
  Q: what is a hacr rated circuit breaker and how is it different from any other breaker? If something ...
  A: These breakers are manufacturer breakers that can be rated for the exact draw of an HVAC unit or ...
Wiring baseboard heaters9/3/2006
  Q: Id like to run 4 240 electric heater to pick up where the wood stove cant heat I have a small ...
  A: It is very doable. I heated my home for a number of years with a two stage thermostat connected to a ...
adding new puck lights betwn existing outlets9/2/2006
  Q: How to install 3 puck lights controlled by dimmer switch, wired between 2 existing outlets. Is this ...
  A: With the connections made this way, the transformer is being dimmed. It may be designed this way, ...
GFCI9/2/2006
  Q: Power comes in box black white and ground - power going out is black white ground as is now the ...
  A: If you connect all blacks with a pigtail to go to the GFI, and do the same with the neutral and ...
range outlet9/1/2006
  Q: I am replacing my range and the electric is connected directly to the range. I want to install a ...
  A: The critical wire is the ground. You need to look at the range connections to determine the wire ...
3 phase upgrade for a warehouse8/31/2006
  Q: sometimes it is good to get another professionals advice. I am good with 1 or 2 phase, but never ...
  A: You can not increase the main breaker size as it is rated for the panel rating and the wire rating. ...
Adding a combo GCFI outlet/switch8/31/2006
  Q: I'm new to home wiring, but recently replaced a faulty GCFI in the kitchen, and wanted to do the ...
  A: I would have to see the diagram for this device. There should be either a diagram on the device or ...
Service Line to Panel Box8/31/2006
  Q: I had an home inspector look at the house we will be purchasing. During the inspection the panel ...
  A: The only way to determine the amount of damage, would be to strip the insulation at the puncture and ...
Well Pump Tripping Breaker8/30/2006
  Q: I have a well pump that keeps tripping the breaker when I reset the breaker it runs fine for a few ...
  A: There is a spray especially for electrical components available at most electrical supply outlets. ...
Electric Stove Wiring8/30/2006
  Q: I do not have all the information around this but here are the symptoms. My daughter has an ...
  A: You need to check the simple things first. Make sure the breaker is rated for the stove, It should ...
Dimming lights8/30/2006
  Q: Why do my Household lights dim when a/c unit kicks in ?mp
  A: The incoming service may not be large enough for the total load of the home. An electrician can ...
Sub Panel8/30/2006
  Q: Cook, I currently have a 100 amp squarae d Box that is maxed out. We are putting in central air ...
  A: There are two things that must be checked. Have the utility check to see what the rating on the ...
Using oversized service panel for sub panel8/29/2006
  Q: I reviewed the question section, but may have missed my question if it was in there. But I just ...
  A: Since you were going to replace one service, I would replace whichever service is the most ...
ceiling fan8/29/2006
  Q: I am trying to install a ceiling fan. I have an old house and the wires are not labelled or color ...
  A: You need to get the type of volt tester that will light up or beep on the hot wire. You may be ...
Electrical wiring8/28/2006
  Q: We just had our basement finished. The hard wiring was done but left without the outlets and ...
  A: You will have to start at each breaker. Make sure voltage is leaving the breaker and then go to the ...
GFCI Plug issue8/28/2006
  Q: I have a GFCI plug in my kitchen that also controls the outlet my washer / dryer is plugged into. ...
  A: I think you are exactly correct. Try turning off the breaker controlling this receptacle and look ...
compressor to generator wiring8/24/2006
  Q: I have a compressor motor that is wired 15 amp 240 three prong and a generator that has a 4 prong ...
  A: Yes. The extra terminal in the generator will be for a neutral that does not exist on the ...
no subject8/24/2006
  Q: I am having difficulty with outlets in several rooms in my mobile home. it started in my small ...
  A: There is a loose connection somewhere. It is time consuming, but the only way to locate it would be ...
Question on replacing dimmer lights8/23/2006
  Q: I currently have 3-pole dimmers (levitron?) installed in my home, and would like to replace them the ...
  A: I was unable to view this site, however a switch only operates on the hot legs. Instead of a common ...
wiring 220 to 30 amp breaker8/6/2006
  Q: i need help on how to wire a 220wire to a 30 amp breaker its for a a/c heating unit. a diagram will ...
  A: First, this wire must be at least a #10 wire to be fused at 30 amps. Second, this cable will have a ...
Outlet-to-switch8/5/2006
  Q: I'm installing linear lighing in my kitchen. I have a 300W transformer that is fed the house ...
  A: This seems to be a single gang box, so a switch with a single receptacle seems to be the device of ...
switch loop8/4/2006
  Q: Why do you reidentify the white wire as black or "hot", how and ,when does this apply?
  A: If a circuit is hot say at a light fixture. There is a two wire cable from here that drops to a ...
Installing a light fixture8/3/2006
  Q: J: I recently bought an older home and want to change the kitchen light fixture (standard fixture, 2 ...
  A: The manufacturers have to cover themselves. The ground wire can be attached to the metal box the ...
wiring pole barn8/3/2006
  Q: Need to run 220V air compressor, 115V Mig welder,regular 110V power tools, lighting etc. Thank you ...
  A: I would go ahead and install another 100 amp panel in the barn also with these loads, and you will ...
Ceiling Fans8/3/2006
  Q: About how much does an electrician charge to install a ceiling fan into a bedroom where there is no ...
  A: It will depend on how accessible the wiring will be to install a circuit in this area. I doubt you ...
Recessed Lighting8/1/2006
  Q: I have three recessed lights in a basement all on only one switch. The lights do not come on ...
  A: It is unusual, but possible to have a loose neutral connection. The fixtures will indicate 120 ...
gfi/gfci7/28/2006
  Q: The circuit goes from panel GFCI to Mstr Bed light switch, then to master bedroom duplex, then to ...
  A: One problem is if the originating breaker as you indicate is a GFI breaker, there was no need in any ...
GFCI with two circuits7/26/2006
  Q: outlet-three conduits with blck and white and one with additional red which is connected to one of ...
  A: There may be even more than two if any of the circuits with the black and white are powered. If you ...
Wire Rating7/23/2006
  Q: I am installing a light fixture which requires branch supply wires be rated: Min 90C. What does ...
  A: This refers to the insulation rating of the house wiring. The manufacturer is covering themselves by ...
proper wiring7/22/2006
  Q: I want to add a breaker to my panel and run a circuit to provide power to my welder in my garage. ...
  A: It will require a 40 amp circuit. A three wire cable will suffice with # 8 copper conductors. A ...
shorted out ceiling fan7/22/2006
  Q: I have a casablanca ceiling fan...style panama with computerized wall switch. I was ...
  A: The wiring inside of the fan is so cramped, it is very difficult to separate the components, but it ...
Parallel Flourescent lighting7/22/2006
  Q: In my workshop I have four 2 bulb 40W florescent fixtures. They are all operated by a single wall ...
  A: Always install new bulbs with a new ballast. It is almost like installing a new engine and using the ...
Burned up doorbell transformer7/21/2006
  Q: My doorbell just stopped working, and I traced it back to a bad transformer, so I replaced. The new ...
  A: You are correct, either the chime is damaged, or the wiring itself it damaged. You can place an in ...
Need help - pictures!? - on how to connect the wiring in my new four light chandelier.7/20/2006
  Q: My new crystal chandelier came with sketchy instructions and no pictures for wiring. It has four ...
  A: The blacks go together, the whites together, the silvers together, all of these are the light wires. ...
Small electric motor question...7/19/2006
  Q: Mr. Cook: This question has always bothered me, and I wondered if you could answer it: Why do so ...
  A: It could have been wired either way David, but I would have to say that the high speed is the most ...
Wiring in a new 220V home service7/19/2006
  Q: We have a ten year old home that has 220 for the range and dryer ( not used)service. We're buying a ...
  A: I would leave the range and dryer ciruits intact for future use or resale. The best solution would ...
wiring to garage 100 feet away7/19/2006
  Q: Mr. Cook, I am in the process of wiring to my new 24 feet by 52 feet garage, which is 100 feet from ...
  A: Wire size is specific based on the amps required. You will have to add up all expected loads to ...
circuit problems7/19/2006
  Q: Friday, I went out for the evening, later there was a rain storm, but to my knowledge, no lightening ...
  A: You may have a damaged breaker. Use a volt meter or volt tester to be sure power is actually leaving ...
Need help - pictures!? - on how to connect the wiring in my new four light chandelier.7/18/2006
  Q: My new crystal chandelier came with sketchy instructions and no pictures for wiring. It has four ...
  A: Each light has a hot wire which is black and a neutral which is white. The system wiring in the ...
Light switch trips breaker7/17/2006
  Q: There is no box at the fixture, just two wires coming from the ceiling. They seem to both be the ...
  A: The hot circuit is in the light fixture junction. One of the two pairs is the hot circuit, the other ...
Light switch trips breaker7/17/2006
  Q: I will have to look in the basment to see if I can figure out which wires lead upto that circuit. ...
  A: With older wiring there is nothing that can be done short of a new circuit when the ground is ...
GFCI outlet7/17/2006
  Q: Can I replace a regular plugin outlet with a GFCI plug in outlet ? Do I need to do anything ...
  A: Yes you can do this. The main concern will be to identify the hot circuit. Does the existing ...
220 single phase7/16/2006
  Q: I have a 220 single phase well pump only three wires.black,white and ground how do I wire this off a ...
  A: A 220 volt plug will have two hot leg connections, and either two others for a neutral and a ground, ...
electrical wiring7/16/2006
  Q: installing new fixture...red wire, white wire, black wire, bare wire capped. Light has two wires..no ...
  A: As a learning experience, a new fixuture must be wired exactly like the original. Be sure to note ...
ceiling fan wires7/16/2006
  Q: Jeff, I am trying to install a ceiling fan and have old, colth wiring in my house. The cloth is ...
  A: There may not be any ground wires, only the hot and neutral wires. You can purchase a volt tester ...
Wired doorbell7/15/2006
  Q: Newer house, and when I connect the doorbell, it will not stop ringing, but this is with the two ...
  A: Low voltage wiring is very similar to high voltage, or 120 volt wiring. From the transformer, one ...
New Ceiling Fan7/15/2006
  Q: 2nd part of a two part question. I am wiring a new fan/light combination in my master bedroom. I ...
  A: With the existing wiring, the light and fan will be on the same switch, without doing additional ...
2 ceiling fans7/15/2006
  Q: first of all I just want to say this site is awsome. And for the question. I am wiring a ceiling ...
  A: It will depend on where the live circuit is located. Usually in a switch, there is no neutral, so it ...
bends7/14/2006
  Q: how many 90 degree bends from box to box allowed? how many outlets can i have in one circuit? what ...
  A: Four 90 degree bends are the max allowed. There is no set number of receptacles per circuit, the ...
Wire Sizing7/13/2006
  Q: The only writing I found on the wire was E18679 G(UL) Romex(R) Simpill(TM) Awg 4 CU 3 CDR with 8 ...
  A: Richard, as best as I can determine by the code book, using table 310.16, which is the table for not ...
reset on outlet keeps popping7/13/2006
  Q: We have been using this outlet for years without issue - the same appliance, a microwave. This ...
  A: If the receptacle is tripping with the microwave plugged in, there is something in the microwave or ...
questionable receptacle wiring7/13/2006
  Q: Renting a home, changing 3 prong room receptacles and came across a wiring setup I didnt like / ...
  A: Every two wire cable has a black, white and a ground. There is either a black wire cut or unused in ...
switch wiring7/13/2006
  Q: i need to wire two lights to one switch, the original light is already wired to the existing switch, ...
  A: Turn off the circuit and pull down the existing light. It will have a black on one terminal and a ...
Novice mistake7/12/2006
  Q: This is a case of a little knowledge messed me up. We had an existing ceiling light fixture we're ...
  A: The switch has to be on the same ciruit as the light, so I am trying to figure out what we have ...
blown electrical outlets7/12/2006
  Q: I was recently using both my microwave and toaster oven, which are plugged into the same outlet, and ...
  A: Double check the breakers first. A breaker will sometimes trip and not appear to be tripped. ...
fading voltage7/12/2006
  Q: Last night all items on one breaker all starting fluction voltage. Going up and down. Could this ...
  A: I would say it is either the breaker, a connection on the breaker, or a loose connection on a device ...
Upgrading service7/11/2006
  Q: My next question is if I currently have a 200Amp main panel, it has a 150 amp tri breaker and ...
  A: A 100 amp should be plenty in the garage and the main panel can indeed supply this just fine by all ...
GFCI combination switch/outlet7/11/2006
  Q: Just removed an old medicine cabinet with the built-in lights that includes a switch at the bottom ...
  A: These devices are made different depending on the manufacturer. There should be terminal connection ...
Running an electrical line outside7/11/2006
  Q: I had a well installed with water pump on my property 13 years ago. Since then the original house ...
  A: The water pump line needs to be underground. There are several methods of splicing this wire. They ...
Wiring a 3-way switch7/10/2006
  Q: Yes, I planned the rooms so that the existing lights in the basement would be in each room. There ...
  A: Mike, I promise I am not trying to make this confusing, I am just trying to understand what is ...
240 volts electrical wiring7/10/2006
  Q: I want to add a ac system to my two car garage. my home is about 8 years old and I have empty spaces ...
  A: It is somewhat simple, however you will need two circuits as the indoor unit is on one circuit and ...
Install generator transfer switch.7/9/2006
  Q: Country home has seperate well control panel from whole house. Well circuit stays hot all the time, ...
  A: The white neutral from panel 1 should have connected to the panel 2 neutral bar and then fed to the ...
underground wiring7/8/2006
  Q: what is the code in NJ for buried electrical wiring. I undertand it's 18" min.....what if I can't ...
  A: The depth is determined by the voltage of the wiring being buried. Check with the local inspection ...
3 wire cable pane location7/8/2006
  Q: can you use a 12/3 cable to feed two lighting circuits or only for kitchen appliance circuits? I ...
  A: You can use 12/3 for any two circuits and allow them to share a common neutral as long as a GFI is ...
Wiring outlets7/8/2006
  Q: Mr. Cook, How many recepticals can you place on one circuit, running on 12-2 wire? We currently ...
  A: There is no maximum number, all the code states is that the attached load can not exceed the rating ...
Possible Bad Breaker7/7/2006
  Q: From reading past questions, I believe I have a bad breaker (or one that is starting to go bad), but ...
  A: NO! The breaker is doing its job correctly. Someone has really made a mess of the wiring here. There ...
dual combo switch/outlet from single pole switch7/6/2006
  Q: How do I changeout a dual single pole switch setup to a dual combo switch/outlet in the same box? ...
  A: You will have to cut off the switch circuit at the breaker and pull out the existing switch and let ...
Panel upgrade vs. subpanel7/6/2006
  Q: we own a 1700 sq. foot home built in 1973 with a 100 amp Zinsco panel. We have been told over the ...
  A: I am not familiar with this brand of panel or the associated problems. I am not sure what is ...
Sub panel wiring7/6/2006
  Q: I want to install a 100 amp sub panel in my garage coming off of my 200 amp house panel. what size ...
  A: The conductor ratings are as follows: #3 is rated for 100 amps. #4 is rated for 85 amps. #3/0 is ...
light switch7/6/2006
  Q: I have all the neccessary parts and when I when to do the project, the wiring boggled me! The switch ...
  A: That was correct Ed, the switch only breaks the hot leg. In order to install a receptacle in this ...
Changing 240V cicuit to 120V circuit7/6/2006
  Q: An old work room had a designated 240V circuit that went to a small welder (I think). I have turned ...
  A: Yes. Just purchase two single pole breakers and use one for the circuit and the other will be a ...
air conditioning and phone line7/6/2006
  Q: cooks I have voip (voice over Internet protocol), everything is connected correctly. The problem ...
  A: That is one I have never heard. In some manner, the a/c is causing electrical interference in the ...
HOT SPA WIRING7/6/2006
  Q: I need to install a 60 Amp. GFI breaker, in a 125 Amp. outside panel for an outside hot tub. The ...
  A: I am not sure what loads the future breakers will have connected, but #6 is only rated for 65 amps, ...
Light dont turn off with by any breaker7/5/2006
  Q: I just bought my house and was looking to label all the breakers. I have a couple of lights in my ...
  A: Some circuits use a common neutral for more than one circuit and it sounds as though some wiring is ...
Upgrading service7/5/2006
  Q: I have built a 750sq ft garage behind my house. I thougth I would just pull another service for the ...
  A: I am not sure how it is in your location, but in this area, a 250 amp service is the largest we can ...
UF Cable Wiring7/4/2006
  Q: J.Cook: Many thanks for your prompt, complete and very professional response. I may have mislead you ...
  A: That was the way I understood it Nick, the problem is the two 12/2 are connected back to the 12/3 ...
Installed bathroom vent fan, but now it won't turn off at switch7/4/2006
  Q: Yes, there are 2 cables (groups of wires) that "end up" at the fixture's location in the ceiling. ...
  A: We can get this narrowed down now. Let me know if you can what wires and colors were connected to ...
overheated wiring7/4/2006
  Q: I'm surprised someone hasn't come up with a surge protector that would act as a disconnect between ...
  A: Lightening is so high of a voltage, it can actually travel the outside insulation and enter the ...
multiple 220V appliances on one circuit7/3/2006
  Q: My Heat/pump unit is currently being powered by a dedicated 30amp circuit. It's function in the ...
  A: In theory this will work, however according to code, the attached loads can not exceed the rating of ...
Changing out a 220v outlet7/3/2006
  Q: I just bought a house and the Dryer outlet is original to the house. So the plug that my dryer has ...
  A: Check the breaker for the dryer. I have not heard of one rated less than 30 amps, so it should be ...
no subject7/3/2006
  Q: We just purchased our first home in Chicago. It was built in 1956. According to our home inspection, ...
  A: I am not sure what he meant by the entire house. If the existing wire has never been upgraded, and ...
Residential wiring7/3/2006
  Q: Old wiring going to kitchen light, red/black/white. Replaced with romex 14/2 red wire not ...
  A: The red appears to have been the bedroom and dining room. Also the switch leg was not wired ...
overheated wiring7/3/2006
  Q: My sister-in-law just had a tree by her house struck with lightning. The tree fell against her ...
  A: The circuit this receptacle is on most likely has damage. I would have an electrician load test ...
Install Electric Dryer Outlet7/2/2006
  Q: I currently live in a condo with a 110V outlet for the dryer. We purchased a new electric dryer ...
  A: By using metal conduit, it is self protecting, so no additional considerations are necessary. I ...
Installed bathroom vent fan, but now it won't turn off at switch7/2/2006
  Q: We have just installed a bathroom vent fan/light, where there was previousely just an overhead light ...
  A: There are some wires crossed. If I am correct, there are two cables of wires coming into the light ...
Wiring new bath light fixture7/2/2006
  Q: Just removed an old medicine cabinet with the built-in lights that includes a switch at the bottom. ...
  A: Both cables will have a black, white and a ground, or should have a ground. If the switch is being ...
wiring of ceiling fans (remote controlled)7/2/2006
  Q: How would you be able to not use your remote but to re-wire the ceiling fan to be controlled by a ...
  A: Every manufacturer is a little different, and some can not be rewired for this. It requires ...
UF Cable Wiring7/1/2006
  Q: J.Cook: I am installing some UF cable for a pool filter along with some GFI outlets. I am using 12/3 ...
  A: If you have not already installed the 12/3 line, don't. A GFI has to have a dedicated neutral and ...
circut breaker6/30/2006
  Q: I am installing a sign at my business and when I turn the circut breaker on the sign will light up ...
  A: A dead short would immediately trip the breaker, so I would say this circuit is overloaded. A larger ...
Electrical6/28/2006
  Q: I just installed a Dryer in a house that has knob and tube wiring. The wire for the 220 seems ...
  A: With this type wiring, there is usually no ground wire to attach to the dryer cabinet to prevent ...
follow up to wiring switches w/ 3 devices question6/28/2006
  Q: Sorry about that; the new switch has 3 terminals on one side but only 1 common terminal on the ...
  A: That makes more sense. The existing wiring has a power leg for each switch. A meter needs to be used ...
follow up to wiring switches w/ 3 devices question6/28/2006
  Q: You assumed correctly on the old switch - 3 separate switches controlling 3 devices. The new switch ...
  A: I was sent this as a follow up, but I did not answer the original question. I will be glad to ...
240V Water pump6/28/2006
  Q: Cook! I have a water pump I'd like to install as part of an underground sprinkler system. The pump ...
  A: If the pump is wired direct, or if a single receptacle is installed, it is considered a dedicated ...
120V outlet tapped to a 240V line6/28/2006
  Q: I'm attempting to install an outlet on the side of my range island and at first, the writing on the ...
  A: There is no way to tap a 240 line for a 120 volt circuit because there is no neutral wire, the bare ...
#14 gauge wire for Central AC6/28/2006
  Q: I have just had Central AC installed in my Home. On viewing the sub contractors (a licensed ...
  A: NO! You can not install #14 on a 30 amp breaker. A 15 amp is the maximum size breaker for # 14 and ...
3 way switch wiring6/14/2006
  Q: Four days ago, I replaced sitches on either side of my kitchen which control 6 can lights. On one ...
  A: A three way combination is the most difficult to explain. The best resource available is a manual at ...
outdoor light post and recepticle6/14/2006
  Q: I had an existing light standard in my front yard. I want to install a new one. The electrical leads ...
  A: When you remove the existing light with the circuit off of course, there will be a white neutral, a ...
3-way switch wiring6/14/2006
  Q: I am going bananas. I wanted to install two 3-way switches to control a ceiling light. After all the ...
  A: I agree these will drive you to drink. The best resource is a manual available at a home supply ...
High Voltage in one outbuilding6/13/2006
  Q: I have two out buildings and a well that runs off of the same overhead line (an ariel line?) ...
  A: The overhead lines from the utility will have three power wires, two will have 120 volts each and ...
circuit box connection6/13/2006
  Q: I installed two new 220 v electric heaters in my garage. My circuit box has a single 20 amp double ...
  A: First we need to determine if this breaker is large enough for both heaters. The formula to ...
2 Switches 4 Lights, Power to Switch6/13/2006
  Q: I'm wiring a group of recessed lights. The wiring is semi-exposed. I have access to run the ...
  A: It is so critical to get the connections correct for a three way switch combination to operate ...
GCIF6/13/2006
  Q: What is GCIF? Can one Recommend me it paginates that I become trained the coneccion of GFCI?
  A: The best source will be at a home supply for a manual titled, " Basic Electricity ". It will have ...
Pool Pump6/13/2006
  Q: I had a follow-up question to a previous question but the fellow is unavailable. I have included my ...
  A: I agree with the need for two separate circuits. One will be the 240 volt circuit with the double 15 ...
Electrical Usage6/12/2006
  Q: Is there any kind of product that will measure your electical usage by breaker. That way you could ...
  A: Great question Mark. I know there are some devices that can be attached with a 24 hours recording, ...
control panel6/12/2006
  Q: May you please explain about control panel wiring? At my worksite (factory), there is a control ...
  A: Without some type of diagram, with three phase power the possiblities of control wiring are ...
Lighting:Changing 120 to 2406/12/2006
  Q: I currently live in South Korea and have purchased an HPS (HID) outdoor 400W floodlight that is ...
  A: The 120 volt outlet in question will have to be the only thing on the circuit or other outlets will ...
Designated Circuit for Pottery Kiln6/11/2006
  Q: I have wired a 50' 10/3 AWG copper wire circuit in the basement with a 30-amp double pole breaker ...
  A: You can never provide too much info. A #10 is good for 30 amps and this is plenty large enough for ...
ground fault6/11/2006
  Q: i changed the GF recepticale in our bathroom and it kicks out immediately upon switching on the blow ...
  A: There are line and load terminal connections on the receptacle, also it does not wire the same as a ...
stage power distrabution box6/10/2006
  Q: my name is Tom and I have a band that plays on regular basis, question, i have a great deal respect ...
  A: This should be able to be done, however you really need to get an electrician on site to review ...
250v household wiring6/10/2006
  Q: I just strip the the European standard cord and it has a Green, Blue and a Brown wire. Which does ...
  A: It depends on how the receptacle is wired, but G should be G on each end and be green, brown and ...
250v household wiring6/9/2006
  Q: I have just recently installed 250v sockets in my house and would like to use 220v-240v European two ...
  A: You will have to replace the cord end on the adapter strip. The G should be ground, X and Y should ...
changing light fixtures6/9/2006
  Q: I am in the process of renovating a 40+ year old house. I am updating light fixtures and the new ...
  A: Light fixture boxes were common to be used as a junction box. The original fixture will have a ...
Service6/8/2006
  Q: Conectiv in Southern New Jersey requires a meter socket with a fifth terminal. My question is in ...
  A: I am not familiar with the fifth terminal in the meter box, this must be a local utility item or ...
Voltage drop when using table saw in detached garage6/8/2006
  Q: A long story here: When I use a new table saw in our detached garage, the saw starts up, then shuts ...
  A: Try replacing the receptacle above the box with the lines feeding the garage and see if that cures ...
hot tub wiring6/7/2006
  Q: On the pump motor with leads 2,3,& 4 with ground lug. Which color wires go in 2,3,& 4 with premade ...
  A: Judy, every manufacturer has their own diagrams. The red and black cable wires will be the line ...
outlets and breakers6/7/2006
  Q: my outlets do not work, i went to the panel and flipped every breaker 5 times and still no luck. i ...
  A: That is a definite possibility. Every device on this circuit needs to be checked beginning at the ...
Bathroom Fan Wiring6/6/2006
  Q: I've been getting a bit of conflicting advice on this one, so I'm seeking a few other opinions. ...
  A: A three wire cable to the switches will be required. It will have a red, black, white, and ground. ...
adding capacity to my electrical service6/6/2006
  Q: What size wire should I use to feed the sub panel? Would It be better to to locate the panel next to ...
  A: I would install two sub panels. One in a convenient space to feed the basement circuits, and come ...
220V to 110V, Follow up to question from 1/10/056/5/2006
  Q: I started out with the exact same question, but was foiled by the existing situation. I want to ...
  A: If the green wire is connected anywhere but the ground, someone did some dangerous wiring. This ...
Upgrade Electrical Service6/5/2006
  Q: I recently talked to the power company about a service upgrade. They told me that they come and ...
  A: That is where utilities differ. I work for a municipality and they require a riser be installed onto ...
adding capacity to my electrical service6/5/2006
  Q: Turns out i was wrong about the 100 amp service. It's actually a 200 amp. So, can I just add the sub ...
  A: You should be good to add the sub panel. I would use at least a 100 amp breaker to feed the sub ...
Replacement switch for electrical baseboard heat6/4/2006
  Q: Can you recommend a replacement part for a Honeywell R879 baseboard heater relay switch? I searched ...
  A: This is a very sophisticated stat just to control a baseboard heater. I would purchase a line ...
Sub panels6/3/2006
  Q: How many sub panels can new residential construction have? I want to come out of my main/meter panel ...
  A: There is no limit on the number of sub panels. I actually have a 200 amp main panel, it feeds ...
main breaker(s)6/2/2006
  Q: again. The panel main says "60," but the other breakers have ratings, as well. Do I add all of the ...
  A: With a 60 amp main, you have a 60 amp service. Since the panel rating is 125 amps, if the conductors ...
main breaker(s)6/2/2006
  Q: What I understand from your answer is that my split buss has a main breaker and may have other ...
  A: That is correct, you in fact have a 60 amp service which was common many moons ago. If you add too ...
main breaker(s)6/1/2006
  Q: In determining the service capacity, I've run into a problem. My service panel rating is 125 ...
  A: The panel may have multiple breakers, but only one is the panel main. It will have the main feeder ...
Troubleshooting Circuit6/1/2006
  Q: Mr Cook, Thanks for reviewing my question. Your help is appreciated. I live in a two stotry new ...
  A: I would have to say the wiring was hit since that is the only thing different from the day before ...
Window AC Volts5/31/2006
  Q: I am looking at an AC on the internet, (GE Model # agm24dj), IT STATES THAT IT IS 208 / 230 with ...
  A: I know #12 is rated for 20 amps, but on a motor, heater, or compressor circuit, I always step up one ...
adding capacity to my electrical service5/30/2006
  Q: It is a 100 amp service.Hello, I am building a pole barn and want to run electrical service out to ...
  A: With only a 100 amp service, it will have to be done sooner or later, and the service really needs ...
Electrical service upgrade...5/30/2006
  Q: I'm Upgrading my main to a 150 Amp service. I just want to be sure that I have done my homework. I ...
  A: Everything is correct with one addition, you will also need a ground rod at the panel if there is ...
air conditioning5/29/2006
  Q: What is the correct wiring for a 5-ton air conditioner? The 2 switches that are running the system ...
  A: The breakers are designed for the circuit, and the circuit is designed for the load, in this case ...
backfeeding generator5/29/2006
  Q: In spite of similar questions, I am still unsure about wiring the output from a 5 Kw generator to a ...
  A: It can not be connected directly to ANY wiring. It must be connected to a transfer switch that is ...
Adding subpanel to disconnect switch5/28/2006
  Q: When our home was being built 3 yrs ago, I had an electrician add a circuit to the rear of our house ...
  A: You can do it exactly as you are proposing, you will just be using a single pole 50 amp breaker to ...
General wiring- switches5/27/2006
  Q: Mr. J.Cook, I am adding a large addition on to my home and have not done basic wiring before. I had ...
  A: I admire anyone desiring to learn some basics. The best thing you can do is go to a home improvement ...
J, i live in a manufactured...5/24/2006
  Q: J, i live in a manufactured home in indiana. i have a outside 200 amp breaker disconnect out side ...
  A: The problem in making a splice this way is it would have to be on the load side of this disconnect, ...
Residential Low Voltage system5/24/2006
  Q: I hope you can help us. We live in a 50 year old home in Colorado Springs and it seems to have a ...
  A: We only have one low voltage system such as this at a Fire Dept to turn on the lights when an alarm ...
220v subpanel in garage5/23/2006
  Q: I need to run a 220v Line to my garage, which is approx. 80 ft from the main house box with no easy ...
  A: I know this sounds good, and if you were only operating lights or a few receptacles, it would most ...
Outlets stopped working5/23/2006
  Q: I own and live in a 30 year old single story home. Yesterday, several outlets in my kitchen stopped ...
  A: Check to be sure if there are any GFI receptacles on these circuits that one has not tripped. If ...
AMP's and Gage wire5/23/2006
  Q: I'm planning to run a line to operate three 30 amp window mount air conditioners. What AMP size ...
  A: What voltage will these be operating on. It will be more cost efficient to add three separate lines ...
Electric cooktop5/22/2006
  Q: If I hook up the white and ground greeb from the appliance to the bare ground of the wiring in the ...
  A: That is the reason for a ground. If there is a short with a standard ground, yes the ground can ...
3 way switch5/22/2006
  Q: I have just installed a 3 way switch in my stairwell. In checking it with a non contact current ...
  A: I am a little confused on the second switch. It sounds like you are saying from the common terminal ...
4 plug for stove/recepticle into 3 wire house5/20/2006
  Q: I have a range with 4 wires - black,white,red and ground. I need to hook up with recepticle into my ...
  A: You will either need a four wire cord and replace the receptacle, or install a three wire cord to ...
110 Dedicated Line for Hot Tub5/18/2006
  Q: We have 2 GFCI outlets (4 plug ins) for our patio and are looking at 2 spas that can run on a ...
  A: A 110 20 amp lines sounds very low for any unit that has a heater. Make sure this is the only ...
fan5/18/2006
  Q: Followup To Question - hey, iam putting in a ceiling fan in a room, with acces from above, i was ...
  A: If there is enough room in the box to make a splice, you can remove all the wires on any receptacle, ...
fan5/18/2006
  Q: hey, iam putting in a ceiling fan in a room, with acces from above, i was planing on screwing a ...
  A: It is a junction box that will have imprinted on the box itself stating it it approved for a ceiling ...
Main panel input5/17/2006
  Q: I am building a house back from the 200 from the street. The most economical connection is to have ...
  A: My supplier said a fused disconnect with double lugs on the load side is available, but is usually a ...
Circuit breaker5/17/2006
  Q: I'm having a problem with power to an electric dryer. It works for a week, sometimes two, then ...
  A: Easily. If the failed power conductor is making contact with the ground conductor of the circuit and ...
GFCI5/17/2006
  Q: have a gfci outlet and a gfci circuit breaker (20 amp) on the same circuit with 12/2. Both were ...
  A: Part of the problem may be the GFI's are bucking each other. You do not put two on the same circuit. ...
Circuit breaker5/17/2006
  Q: I'm having a problem with power to an electric dryer. It works for a week, sometimes two, then ...
  A: The only component left is the actual wiring to the dryer. Especially since it happens more often in ...
Sub Panel Load and Heater Circuit5/16/2006
  Q: I have a new home in New Jersey with 200Amp Service in attached garage. Builder installed 240Volt ...
  A: You can replace the 50 amp with as high as a 65 amp breaker as #6 copper is rated for 65 amps. You ...
Connecting 14-3 and 14-2 wiring5/15/2006
  Q: I am trying to connect three separate wire together in a junction box. I have the main power feed ...
  A: Yes. Connect the neutrals and grounds as before. The changes will be to keep the black of the 3 ...
Connecting 14-3 and 14-2 wiring5/15/2006
  Q: I am trying to connect three separate wire together in a junction box. I have the main power feed ...
  A: First, I would advise against having this junction box in an area that is not accessible. It is ...
Connection for 220v well pump on main breaker panel5/14/2006
  Q: This past Saturday we had our electric panel up graded from a 100amp Push-O-Matic main panel to a ...
  A: It is obvious that whoever told you about the right and left breakers is not an electician. From top ...
Wiring a swamp cooler motor5/14/2006
  Q: I was given a motor for my swamp cooler but, the colored wires do not match the colors on the ...
  A: Unfortunately the motor manufacturers do not follow a standard of wire colors. This could be a three ...
outlets5/14/2006
  Q: How many receptacles can run on a 20 amp breaker and can u run light switches also?
  A: There is no definitive number that can be on one circuit. The code only states the attached loads ...
Where do I start to find this problem?5/14/2006
  Q: I recently purchase a home built in 1993 in MD. When the home inspector came through, he noted that ...
  A: A GFI has to be powered for the test button to work. If powered, it still does not trip, it is ...
3 phase5/13/2006
  Q: You helped me before! I have a little food service store. My soft serve ice cream machines are 3 ...
  A: It sounds like that would be the case, however if there is not a wiring diagram, one needs to be ...
photo cell switch for outside lights5/13/2006
  Q: I had a new garage built a couple of years ago with the electrician installing a photocell for 4 ...
  A: It sounds as though the cell is " seeing " the light from the fixture. Try rotating the cell another ...
Wiring in a second door chime downstairs5/11/2006
  Q: Mr Cook; In 2004 you answered a person who had the same delima that I have. I have a rec room ...
  A: This low voltage setup is wired the same as a high voltage circuit. A switch is always in the " Hot ...
remote ballast5/11/2006
  Q: I have 6 -250W metal halide fixture in 1 lighting circuit. They are mounted very high above finished ...
  A: If there is such an animal as a ballast large enough for 6 250w, there is no reason it can not be ...
3 way switches with two recessed lights?5/9/2006
  Q: Question Hi and thanks in advance for your time.new construction, hallway with switch at each end ...
  A: As you have found, it takes a three conductor plus ground cable to connect a three way switch. I am ...
amp limit5/9/2006
  Q: i had a pool filter pump that was 15 amps and 1.5 hrspwr. the new pump is 12 apms and every other ...
  A: You are saying a basic three prong plug. Are you speaking of a standard 120 volt plug with a ground? ...
Flickering Lamps5/8/2006
  Q: I live in a rented apartment in an old building. My table lamps flicker--not all the time, though. ...
  A: It is not necessarily anything in your apartment. It sounds as though the incoming building service ...
Current in neutral wire5/8/2006
  Q: I am in a sticky situation. Yesterday I went to flip my ceiling fan's light on (it is a 3 way ...
  A: I use one of these devices myself, so I am not making fun of you as I do use one, but many call this ...
current changes5/8/2006
  Q: I hooked a small refrigerator up the other day it runs around 2 amps. When it kicks on I can see a ...
  A: If you watch when the refrigerator first starts, it will pull 10 amps or more, then drop back to the ...
120/240 circuit5/7/2006
  Q: I want to move my electric stove but I need to run a new 120/240 line. The existing three wire ...
  A: Even with the main turned off, the power will still be on to the main breaker and is a potential ...
Romex size for distance5/6/2006
  Q: I am in the process of putting one 8' flourescent light fixture and two receptacles in a detached ...
  A: There is a detailed calculation to determine conductor derating based on distance, a rule of thumb I ...
GFCI outlets5/6/2006
  Q: I have two GFCI outlets, 1 attached to the deck, another down by our pool. I replaced the deck GFCI ...
  A: If they are both on the same circuit they will fight each other. Only one GFI device can be on a ...
heat pump wiring5/3/2006
  Q: We bought a heat pump from weather king changing from a bryant. we do not match on the wire colors ...
  A: You will have to see what terminals the wires are connected to on the thermostat. The orange wire is ...
220 V 3 & 4 Wire systems5/3/2006
  Q: I have a machine that reqquires 220 V to run in the home. I have a 220 V Recepticle for the dryer ...
  A: Double check to be sure this is a 240 volt device, the machine colors indicate it is a 120 volt ...
230V electrical Outlet5/2/2006
  Q: Cook, I just bought a 230v air compressor. I have only one 230 volt in my studio where my MIG ...
  A: Unless the compressor fails, you will not experience any problems. The only possible problem would ...
GFCI outlet 20 amp5/2/2006
  Q: I am running 12/2 from 20 amp breaker to gfci outlet. I see the box of the outlet says 15amp and so ...
  A: I know it does not sound logical, at least to me, but according to code, yes this 15 amp device can ...
220v pool pump timer5/1/2006
  Q: I have begun installation of a 220v timer for a pool pump and have run into a roadblock. I ...
  A: You may be making a very common error. You can not check from the terminals to ground because the ...
kenmore range4/29/2006
  Q: i just purchased a kenmore range and it didnt come with a manual and we bought a 3 prong plug and ...
  A: You may have to see which wires are connected to these post's. The two large wires connected to ...
My home has 9 Kidde smoke...4/29/2006
  Q: My home has 9 Kidde smoke detectors, all model 1276's. 6 of these are part of the original ...
  A: The red wire on the other devices is just the power source and red because there are two circuits in ...
circuit brakers / wiring trouble shooting4/29/2006
  Q: After I had an addition put on my home I found that I needed to turn off two circuit brakers to stop ...
  A: It is possible the GFI is defective, but more likely there are some crossed wires somewhere and the ...
extension cords4/26/2006
  Q: I need help please. I have two questions, for which I've been on the net for over an hour now and ...
  A: A #14 is a heavier gauge than 16 or 18, and the code rates a #14 at a maximum of 15 amps load. With ...
Too much on one circuit4/24/2006
  Q: This may be something you won't be able to answer without actually looking at the home, but here ...
  A: Breaking down the circuits should not be a major problem. There have to be junction boxes that are ...
Weird Electrical Issue4/23/2006
  Q: I have a strange issue that I think I have figured out, but I want to run it by you and see what you ...
  A: George, I think that is very possible. I have also found that as in this case, some bulbs are much ...
FUSE BOX4/22/2006
  Q: My mother has a fuse box, and I'm more familiar with a circuit breaker box such as we have. ...
  A: This as you say is a very old device. Pull on the handle and it will totally remove itself from the ...
220vac wiring4/21/2006
  Q: I need to run wiring from my house to my garage to run a 220vac air compressor. Where do i need to ...
  A: Brock, the best resource and the first one I purchased 20+ years ago is BASIC ELECTRICITY. It can be ...
Outdoor Receptacles4/20/2006
  Q: I plan on running a new circuit from breaker box to feed 4 outdoor gfci's. Questions are 1. At the ...
  A: 1. The code says the wire must be protected, if you are using UF cable, no LB is required if there ...
motor efficiency4/18/2006
  Q: I will be purchasing a commercial dishwasher for the place I work at, and have the option of ...
  A: You really will not be saving any energy, it will draw less amps on three phase due to three power ...
Providing electricity to a Master bedroom With a 20 AMP GFCI Circuit4/18/2006
  Q: I added a a master bedroom/bath and my contractor put in a 20 AMP GFCI circuit to provide power to ...
  A: First, if I am reading this correctly, the red and black are connected to the same breaker? If so, ...
Wiring Sub-panel4/18/2006
  Q: I'm finishing my basement and need to add a few new circuits. I have a 60 amp feed for my hot tub ...
  A: You can do that Steve, but let me give you some problems you may encounter and another option. The ...
Breaker Problem4/17/2006
  Q: This morning when I turned on my bathroom lights, they began to flicker and dim. Then, they started ...
  A: Check the bathroom receptacle. It should be a GFI with a test button and it may be partially ...
A/C outlet4/16/2006
  Q: I have moved into a new apt. The wall A/C unit is 8000btu and 8.5 amperes. It plugs in to a ...
  A: Chances are somewhat slim, but yes you could damage the electronic devices on this same circuit. The ...
Installing a electrical socket.4/11/2006
  Q: In my kitchen I have 2 different sockets that do not work. They are not on the same wall and they ...
  A: You can extend the wire with a wire nut. A tester can give a false reading if there are two circuits ...
new light fixture4/10/2006
  Q: I live in an old (1919) NYC apartment buildng. Wiring is original. I have replaced many of the old ...
  A: This is cya for the manufacturer, however anytime wiring this old is disturbed, there is a very real ...
socket behind built in cupboard4/9/2006
  Q: ..I have just put in a large cupboard in my sons room.There is a electric wall socket behind the ...
  A: Great question Philip. You can not use a drop cord of any configuration for permanent wiring, and ...
3 phase generator4/7/2006
  Q: I can obtain ( for very low cost) a brand new propane fired backup commercial Generac 20KV generator ...
  A: Some Generac units can be reconfigured for single phase. You can take the model and serial numbers ...
hot ground4/7/2006
  Q: I have 120 volt reading between hot and neutral,and 120 volts between neutral and ground. the ...
  A: The hot wire is making contact on a device or in one of the junction boxes the device is installed ...
Garage subpanel feed w/ water line4/4/2006
  Q: I am going to run #2 aluminum wire in 2" pvc in a trench to my new garage. Can I also run a 1" ...
  A: No problem Ron. This is totally acceptable. Just one heads up, if possible, I would put the water ...
Electrical wiring4/4/2006
  Q: Before the rewire the bathroom switch operated two ceiling lights. I removed one ceiling light and ...
  A: Sorry for the delay Tim, I have been swamped here. The first thing that must be identified is the ...
Electrical wiring4/1/2006
  Q: Before the rewire the bathroom switch operated two ceiling lights. I removed one ceiling light and ...
  A: Sorry for the delay Tim, I have not been able to access the site. I need for you to turn off the ...
3 wire call station3/30/2006
  Q: button 1 will buzz buzzer 2, button 2 will buzz buzzer 1
  A: Is this a remote control system? If may be the switches are not set correctly whether a hard wired ...
Outdoor recepticals3/30/2006
  Q: I am installing two recepticles under my deck, I am extending a line from a ground fault recepticle. ...
  A: If you turn the power off to the GFI you are connecting to and pull it out of its box, you will see ...
AC units with 120 wiring3/29/2006
  Q: I live in a 2-level apartment in Brooklyn, and recently learned that our unit has 120 wiring. We ...
  A: I understand fully. I had the same situation in an apartment I had. It totally depends on the number ...
Dimming lights3/28/2006
  Q: My lights recently started flickering this happens a few times a day and can affect any light in the ...
  A: The most common cause is a loose wire. Check all the connections again on the devices that were ...
open neutral3/28/2006
  Q: Have rented a seasonal cabin only to discover surges an sags throughout the place. There are ...
  A: The breakers are on the hot leg of the circuit, and an open neutral will not always cause a breaker ...
GFCI outlet3/27/2006
  Q: I have a GFCI outlet in the 2nd floor bathroom that controls outlets in the master bath, 1/2 bath on ...
  A: Apparently the GFI's are wired for individual protection. If it had been wired as a through device, ...
110 subpanel from 220 circuit3/27/2006
  Q: I just moved into a new house (new construction). In the basement, I have a "server room", crammed ...
  A: this would work, however since you have to purchase the two breakers anyway, why not install them in ...
GFCI outlet3/27/2006
  Q: I have a GFCI outlet in the 2nd floor bathroom that controls outlets in the master bath, 1/2 bath on ...
  A: You are working with several circuits. There can be only one GFI device on a circuit or they will ...
receptacles3/25/2006
  Q: In a 20 amp circuit do the receptacles need to be rated at 20 amps? Most receptacles you buy read ...
  A: Yes. All devices on a 20 amp circuit must be rated for 20 amps. I never use #14 wire or run any 15 ...
Wiring Lights in an unfinished basement3/25/2006
  Q: I would like to add a switch in my basement. 5 lights are already in. I want to put a switch ...
  A: You would need an additional wire from light one to light 3 to control them totally separate. You ...
Electrics3/25/2006
  Q: I have 2 ceiling lights in the same room. The first one I replaced had 3 wires to connect L, N & ...
  A: You actually have six L wires and two N wires and the 3 grounds. The two wires from the switch are ...
Basic electrical terms3/24/2006
  Q: What is the meaning of KWhr? How does energy saving bulb work? What is the different between energy ...
  A: Electrical energy is sold by the number of watts used. As you can imagine, a 100 watt bulb burning ...
Timer Switch for Lighting3/23/2006
  Q: I can do a little wiring but this is a little confusing. I just purchased a Leviton Decora ...
  A: That sounds better. If I am correct in this, the switch you are replacing has three wires connected ...
Timer Switch for Lighting3/23/2006
  Q: I can do a little wiring but this is a little confusing. I just purchased a Leviton Decora ...
  A: I am confused also Carl. What was the purpose of this box? We will need an incoming circuit for the ...
can we get too much current coming in to the house?3/21/2006
  Q: I live in s double wide moble home and our electric bill has always been nearly 300.00 a month,even ...
  A: It requires a good volt meter. You can check the actual voltage at a receptacle and be sure it is ...
Electrical Wiring3/19/2006
  Q: I put in a drop ceiling and need to re-connect my basement lights. I am trying to re-connect five ...
  A: Open the switch and see if the black or red wire is connected to the switch on the 14-3 wire. If the ...
power drop within circuit3/18/2006
  Q: I've got a light in my master bedroom that seems to have failed some how. At first i thought it was ...
  A: Jeff, there is either a loose connection somewhere on a device, or it is possible a GFI has tripped. ...
Ceiling fan trouble3/17/2006
  Q: I have a ceiling fan (which includes light) that stopped working during a storm. There was a loud ...
  A: The fan motor is the most likely the problem. However, to be sure, you can pull the fan down enough ...
Sub Panels3/16/2006
  Q: What lugs do you attach a sub panel to from mains panel Answer - Instead of having a main breaker ...
  A: It is not in all panels. Either the panel is a main breaker or main lug, one or the other. The ...
Sub Panels3/16/2006
  Q: What lugs do you attach a sub panel to from mains panel
  A: Instead of having a main breaker that the feed wires would attach to, there will be two large lugs ...
little fuse3/14/2006
  Q: What's the story on split fuse, two pole fuse the fuse that replaces the one inch fuse with two ...
  A: In the industry, these are called mini's for obvious reasons. I know the manufacturers would ...
condensation in breaker box3/12/2006
  Q: I have been having problems with moisture in my breaker box during the winter. The meter box is ...
  A: I have to admit Chris, I have never heard of this. There are two possibilities. Either the ...
hot/neutral reversed3/9/2006
  Q: When switching out a sub panel for my father n law, I was having problems with a breaker that kept ...
  A: Reverse polarity can be very dangerous in several circumstances and in a number of devices. Consider ...
outdoor wiring upgrade ?3/9/2006
  Q: But I do have one more question. I have decided to run two seperate 12/2 UF cables to the pool, ...
  A: Just for ease of a pull and the fact that 3/4 is not much more than 1/2, I would use 3/4 PVC. It ...
outdoor wiring upgrade ?3/9/2006
  Q: First I want to say thanks you in advance for your time and professionalism. I do greatly appreciate ...
  A: Glad to help any time Woody. If the pump pulled more than 16 amps, I may consider a 10/2 line, but ...
wiring3/8/2006
  Q: I am in the future going to wire a residential home. My question is can I run a common neutral for ...
  A: In residential wiring, one neutral can service two circuits. The only thing to be aware of is that a ...
Subpanel3/4/2006
  Q: I own both sides of a double home. Each side is fed with a Square D 200 amp panel. We are opening up ...
  A: Yes you can use the existing panel for a sub, and for simplicity, that is what I would recommend. ...
GFI outlet problem3/3/2006
  Q: I recently tried changing an outlet in my laundry room, from a standard outlet to GFI. The problem ...
  A: The heating system should be a 240 volt circuit, and if they used one leg of the 240 volts for the ...
electric shower3/1/2006
  Q: watts it is.its connected to a 30 amp cable and the dia. cable use is about 4mm[3/16th].Could you ...
  A: Is it on a double or single pole breaker, 120 or 240 volts. If it is a double breaker, it is 240 ...
Adding a light to ceiling fan2/28/2006
  Q: I am trying to add a light to a ceiling fan(Hunter) that already has a remote control(Harbor ...
  A: There will be a separate wire for the light. On most fan/light combo's, there is a black wire for ...
220v to110v2/27/2006
  Q: Hey, thanks for the info !!! I thought that is what I had to do. I will have to buy a 3rd circuit ...
  A: There are no provisions for how many receptacles that can be installed on any circuit, the attached ...
3phase vs sisngle phase in residential2/27/2006
  Q: I am building a house and have the choice of single phase or three phase electric service. The HVAC ...
  A: To explain each, a single phase service will have two hot legs, each leg is 120 volts. On a three ...
GFCI2/27/2006
  Q: I need GFCI outlets in my kitchen. Is it as simple as placing one in there or does it require the ...
  A: The wiring will not have to change. The major difference is in the attachment points. You will have ...
4 prong dryer conversion2/27/2006
  Q: -Thank you very much for the answer. You said "There will be a white and a green ground on the ...
  A: I was thinking about the dryer having a new four prong cord, I apologize. Use the old cord and ...
220v to110v2/25/2006
  Q: I have a 220v elecrtric dryer outlet that is not being used (my dryer is natural gas). I want to tap ...
  A: Art, you cannot use a bare wire for a neutral. You would have to pull in a new line to be legal for ...
4 prong dryer conversion2/25/2006
  Q: I have just purchased a new dryer (4 prong 30 amp) with all the electronic bells and whistles to ...
  A: The Home Depot guy works there because he is not an electrician. It will not affect the dryer ...
Light switch wiring2/25/2006
  Q: I have a hall light that is controlled by two different switches. One of the switches will operate ...
  A: This is a three way switch circuit, and either the wiring is installed incorrectly on one of the ...
Ceiling Fan Wiring2/24/2006
  Q: I had a ceiling fan that was controlled by 2 wall switches - one turned the light on/off and the ...
  A: Whatever the original white fan wire was connected to is the circuit neutral wire. This will be a ...
Breaker/Wire Failure2/23/2006
  Q: Yesterday I was installing some motion detector lights on a building I own and I bridged a wire and ...
  A: The short may have damaged the bulb on the halogen, or the bulb or ballast in the sodiums, or it ...
electrical2/22/2006
  Q: When does the neutral and ground buss bars need to be connected, and when not? When does the ...
  A: They are bonded together at the main panel. The incoming service only has a neutral feed, this ...
a/c wiring2/22/2006
  Q: J, The info label on the unit says minimum circuit ampacity: 22.8 and maximum overcurrent ...
  A: As stated, #10 wire is good for 30 amps, but I have encountered enough wire damage with overheated ...
a/c wiring2/22/2006
  Q: J, I see you say "low voltage wiring" in your bio but maybe you know this. I'm adding central a/c to ...
  A: Low voltage wiring is actually a relative term, to a lineman, it is less than 600 volts, in my case ...
Hi j, Thanks for taking...2/21/2006
  Q: Here goes. How much is an acceptable range I should expect to pay for a professional electrian to ...
  A: I work for a municipality and have never done contract work, so I am out of touch on estimating ...
three way wiring2/21/2006
  Q: We have a small bathroom with a 3 way switch (I guess because it has a useless entry to the master ...
  A: I am not sure what you are testing with, but if all original wires are still intact, I see nothing ...
Grounding a non grounded outlet2/20/2006
  Q: The house I am renting doesn't have grounded outlets on the exterior walls. That is where I want to ...
  A: The legal way this can be done without replacing the wiring to add a ground, is to replace the ...
Trouble using generator and furnace2/19/2006
  Q: We have a Heil 90% eff. FURNACE. A 1500 watt generator and a Gentran (sub panel) for converting to ...
  A: To determine the amp maximum of a generator or any device in watts, you divide watts by volts. 1500 ...
Electric service to work shop2/18/2006
  Q: I have another question that I forgot to ask in the first. Since my main panel is at the front ...
  A: If you are using direct burial wire, it can still be ran through the attic, but it will have to be ...
dear j cook,i have a lincon...2/17/2006
  Q: i have a lincon welder generator,with two 110 15a outlets can i make a wire from 2 extensioncords to ...
  A: It would depend on whether the two receptaces are on different legs or the same leg. If they are on ...
Electric service to work shop2/17/2006
  Q: My question is this. I have built a work shop behind my home and now I would like to run a 90 amp ...
  A: #2 copper is rated for 115 volts, but on this long of a run, I would use #1 which is rated for 130 ...
Ceiling fixture2/15/2006
  Q: I don't see how I can do this since there is only one black wire that comes from(or to) the switch ...
  A: I misunderstood the other wires. The black going to the switch must remain hot and not be connected ...
Ceiling fixture2/14/2006
  Q: Hope your crew gets straightened out. I checked and the black wire is the hot one as I thought. ...
  A: That should make it easy. The red wire will be the wire going from fixture to fixture to operate the ...
Feeding Service to a Remote Building2/13/2006
  Q: I have a barn that is detached from my house. There is no metallic connection between my barn and ...
  A: Excellent question Jim. The old code said you could either run a fourth wire, or a separate ground ...
Recently i flipped the light...2/11/2006
  Q: Recently i flipped the light switch for the yard lights. In doing so it seemed to knock out allot of ...
  A: You have some damaged wire somewhere. A bulb, motor, coil or anything with continuity will back feed ...
New Home Power Panel2/11/2006
  Q: We are having a new home built in SC. The original bid called for a 200 amp power panel for the ...
  A: Personally it sounds cheap. You would not believe the difference in price of just a 400 amp breaker ...
Recessed Lighting2/8/2006
  Q: J: I have read a bunch of your other responses and they have been great! I am pretty handy around ...
  A: No problem Rob. Make sure the circuit is off and remove the existing fixture. If there are more than ...
Replacing breaker panel2/8/2006
  Q: I have recently began renovating an old barn. Presently, there is power in the barn but it is coming ...
  A: If the meter is six feet or less from the panel, no disconnect is required. Since it is directly ...