Wire Diagram 3 Way Switch. A three way switch is fundamentally different in its operation from a regular two way switch. As it goes through the red traveler it will stop at switch number one.
As it goes through the red traveler it will stop at switch number one. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. A three way switch is fundamentally different in its operation from a regular two way switch.
Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture.
The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut. 3 way switch wiring diagram. The black and red wires between sw1 and sw2 are connected to the traveler terminals. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.
