Replacing and Wiring Three Way Switches
How to wire three way switches with wiring connections and wiring diagrams.
Connections for Three Way Switches
Electrical Question: One of two three way switches which control several fixtures in my shop went out.
- I bought two so I could replace both. Replaced one, circuit OK. Replaced second, circuit not work from that switch. Hooked up both as old switches were. So, one works, one does not. HELP!
This electrical question came from: James, from Marblehead, Massachusetts.
Dave The Electrician’s Reply:
Thanks for your electrical question James
How to Wire Three Way Light Switches
- James, identifying the wiring of your three way switch configuration is the only way to understand the right wiring connections that will make your three way switches work.
- Because there are more than one wiring configuration I have created this easy to understand guide that will help you get your three ways switches wired right and working. I know you will find it to be very helpful.
3 Way Switch Diagram
In response to the requests for this information, I have developed a comprehensive,step-by-step guide designed to walk you through the identification and wiring of your 3-way switches.
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
The Safest Way to Test Electrical Devices and Identify Electric Wiring!The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.
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