3 Way Light Switch Wiring. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Either way complete these five steps for 3 way light switch wiring.
Wire a switched outlet. Turn the power off at circuit breaker. Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches.
Do this before you disconnect any wires from the switches.
Connect the ground wire to the green screw. Head to your fuse box and make sure there is no power coming to the room. Typical 3 way switch wiring nm cable. All three way switch and 2 way switch wiring diagrams have the same basic components.
