Three Way Electrical Switch Wiring Diagram

A 3 wire nm connects the traveler terminals of the first and second 3 way switch together.

Three way electrical switch wiring diagram.

In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Wiring a 3 way light switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram.

Typical 3 way switch wiring nm cable. In the above diagram the white wire must be re identified as a hot wire at each switch location. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire. The black line wire connects to the common terminal of the first 3 way switch.

This is the 3 wire cable which you must have to wire a 3 way. An example of three way switch wiring with the line and load in the same 4 square electrical box. Traveler wires are interchangeable. 3 way switch wiring diagram with line and load in the same switch box.

I have a outside light by the door going out of the home that is controlled by a single pole switch. Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches. The white wire between switches is not being used as a neutral. Three way switch diagrams fully explained wiring 3way switches 3 way switches are a convenient way to operate lighting fixtures from two locations.

Building a new workshop that is detached from home. With these diagrams below it will take the guess work out of wiring. Take a closer look at a 3 way switch wiring diagram. How would this be wired.