AllExperts > Experts 
Search      

Electrical Wiring in the Home

Volunteer
Answers to thousands of questions
 Home · More Questions · Question Library  · Free Encyclopedia ·
More Electrical Wiring in the Home Answers
Question Library

Ask a question about Electrical Wiring in the Home
Volunteer
Experts of the Month
Expert Login

Awards

About Us
Tell friends
Link to Us
Disclaimer

 
 
 
About J Cook
(Top Expert on this page)

Expertise
General electrical wiring, including but not limited to, residential, panelboards, control wiring, low voltage wiring, Heating and A/C control wiring, single and three phase wiring.

Experience
I have been doing electrical since high school. I have been licensed by the State of North Carolina for ten years and am currently the Building Maintenance Superintendent for a municipality. I have extensive control wiring experience.

Organizations
Refrigeration Service Engineers Society.

   

You are here:  Experts > Home/Garden > Home Improvement/Repair > Electrical Wiring in the Home

Questions Answered By Expert  J Cook 
In Category  Electrical Wiring in the Home

SubjectDate Asked

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 recent