3 Way Switch Wiring Schematic. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Interested in a 4 way switch wiring diagram.
Pictures descriptions and handy tips from working over 40 years as an electrician. 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. Traveler wires are interchangeable on each switch.
Typical 3 way switch wiring nm cable.
Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. At each switch in the above 3 way switch wiring diagram the black wire gets connected to the common copper or black screw. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The source in this circuit is at the first switch and the light fixture is.
