Electrical Wiring in the Home/replace old style 3 way switch

Advertisement


Question
top
top  

bottom
bottom  
I have an old style 3 way switch that has bx cable, red white and black wires and the screws on the top and bottom not the sides. I need to know where and which wires get connected to the new style switch. and I would like to know which wire is the power -
I have attached pictures of the old switch

you assistance is very much appreciated!

Answer
Tom,    you know the drill, you got a voltmeter?  Get a cheapo in the discount shelves for five bucks at any hardware store,  a meter makes things so much easier,

Instead of me writing this all out step by step  here are some much easier sources of reference with videos,  and some of the best ones      first identify the source of the power,      once you have that it is pretty much all done,  one hot two travclers,         


First identify the hot wires,  

is the power fed to one of the boxes or is the power at the load?

https://www.youtube.com/watch?v=EBejnPtYuAk  IDENTIFY HOT WIRE VIDEO

http://www.thisoldhouse.com/toh/video/0,,20336010,00.html      VIDEO

http://www.dummies.com/how-to/content/how-to-replace-a-threeway-light-switch.htm   DIAGRAM

http://www.houseofantiquehardware.com/push-button-switch OLD STYLE PUSH BUTTON

http://www.houseofantiquehardware.com/push-button-switch  WIKI DIAGRAM AND ID

http://www.familyhandyman.com/electrical/wiring-switches/how-to-wire-a-threeway-


Above DIAGRAM CHOICES POWER AT LOAD    POWER AT SWITCH BOX    


http://www.electrical-online.com/3-way-switch-wiring-diagram-variation-3/  DIAGRAM ID


If you are still stuck let me know,   no way I can tell where the power is routed,   the videos will show you how to identify,      the power is either at the switch box or at the light load,      but pretty much the same after that   and also explains colors but YOU will have to identify hot     if you cannot get it,    let me know
About Electrical Wiring in the Home
This site answers questions related to home electrical wiring, home wiring, general electrical help,and other electrical questions related to aleternating current (AC). You can find help on the National Electical Code, home electrical issues, wiring electrical outlets, installing lighting, electrical grounding, and general electrical help for do-it-yourself projects not require an electrician. If you do not see your home electrical wiring question answered in this area then please ask your electrical wiring question here

Electrical Wiring in the Home

All Answers


Answers by Expert:


Ask Experts

Volunteer


Will Babbitt

Expertise

Electrical issues of all types, wiring, control, appliances, components, specialty in Electric MOTOR or APPARATUS trouble shooting, electric motors, electrical problems, single phase, three phase, DC, capacitors, elevator MG-Sets, modifications, reverse engineering, VFD Drives, single to three phase convertors. Repair of most any electrical/mechanical/electronic apparatus, OEM, AC, DC, Industrial Applications, Three phase, single phase failure mode, determining the root cause of the equipment failure BEFORE failure repeats, Antique appliances, electric motors, fans, ceiling fans, base mount fans, poor equipment performance, Modifications, habitual failures, vibration, redesign, obsolete issues, collectible items restored, rewinding. Owner of EMR Repair Inc www.emrrepair.com More information on electric motors, under Engineering/Motors Ask about any electrical or mechanical problems in the home, office, or even at your work. B2B or business to business CONSULTING I can do but it would be a much more complex issue, that would require a significant amount of time. repair@mearservice.com from there we can discuss and begin work on about anything. Industrial electric motors, controls, troubleshooting, vibration, alignment, any type of industrial or commercial electric/electrcical equipment For the home owner, renter, apartment if you have odd things going on, describe to me, photos are normally very helpful, appliances, heating and air conditioning issues, light switches, installation, DIY PROJECTS FOR THOSE NOT EDUCATED IN ELECTRICAL, we can do some things, but for safety and sanity reasons, I may refer you to a local electrician, and help you find one, help you with pricing and even speak directly with anyone you hire if you have issues,

Experience

Over thirty years with a major repair and sales company, VP of Operations, and former owner of my own specialty repair shops, MEAR Services local to Kansas City Missouri EMR Repair Inc., located in Kansas City Missouri, 2014 sold both businesses to JCI Industries, Lee's Summit Missouri wbabbitt@jciind.com Evaluation and repair of electrical/mechanical apparatus. Electrical and mechanical repairs, trouble shooting including, vibration and balance issues. About.com provides this service, and the huge costs to provide help on about any subject. They provide the servers, the people to vet the experts, costs that would be the same as operating a good sized business, They should be appreciated for what they do, the huge costs and the great help they provide for free, Electric motor questions, can be answered here but there is a dedicated category that has other experts to help and add to a solution. Other common questions, are noises in the walls, breakers tripping, devices not starting or shutting down for no apparent reason, smoke alarms buzzing, thermostat change outs, or sizing wire or needing information for a new project, but anything can be resolved, anything, with enough effort and patience, DIY, with electrical is possible, but in most cases the use of a simple ohm meter or volt meter is needed, they can be purchased at any hardware store for a few bucks. If you have smoke, or smell smoke, don't be writing me, call 911 the Fire Department has no problem looking for smoke smells, better then spraying water on a blazing fire. DO NOT GET CAUGHT INVESTIGATING AND TRAPPED IN A BASEMENT LOOKING FOR A BLOWER FAILING< As to the tip jar, it is up to you, it is appreciated, every expert spends out of pocket that I know, we spend on IP time, computer wear, printing documents, books, and of course our time, but if we prevent a $400 service call, we did well,

Organizations
Former IBEW, EASA, IEEE, UL, ..............

Publications
SEE ELECTRIC MOTOR CATEGORY

Education/Credentials
10 plus years, various Technical Schools, followed by Industrial College Credit and non Credit Courses, electronics courses, experience in most any electrical apparatus, electric motors and generators, AC OR DC, fractional to above 5000HP, other electrical apparatus, slip rings, sleeve [plain] bearings, lubrication, identification-no data plate, control components, service and sales. I have continued night schools for decades, the list is extensive. I have been in the business of repairing most anything with wires or mechanical parts for decades, I have some helpful hints and directions you won't have to dig up. Or hopefully not have to pay a huge service call invoice to find.

Awards and Honors
Yes

Past/Present Clients
Federal Government, National Weather Service, NOAA, Commercial Power Plants, Major Vehicle Manufacturers, Printers, Other industrial and Commercial Businesses

©2016 About.com. All rights reserved.