Wiring Diagram For 3 Way Switch. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. The basic 3 way switch wiring diagram this is the most common and the easiest wiring diagram to follow of any of the wiring diagrams for a 3 way switch circuit.
The black hot wire connects to the far right switch s common terminal. First my easy to understand chart helps to identify the 3 way switch system for the application. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Take a closer look at a 3 way switch wiring diagram.
Traveler wires are interchangeable on each switch.
This is the 3 wire cable which you must have to wire a 3 way light switch. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The basic 3 way switch wiring diagram this is the most common and the easiest wiring diagram to follow of any of the wiring diagrams for a 3 way switch circuit. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. 3 way switch wiring diagram depicting all wires in the ceiling junction box.