Diagram Of 3 Way Switch Wiring With 14 3 Wires. Back wire openings accept 14 12 awg solid copper wire only. I replaced the switch and now the up doesnt work at all.
Anyways the regulator on both my 68 and 71 only have three wires in a v. The ground wire is pigtailed with a wire connector at the switch boxes and the ceiling box. Same diagram but with 4 way switch added.
If your circuit breaker is 20 amps you will need a 12 gauge wire 12 3 and if you have a 15 amp circuit like most homes you will need a 14 gauge wire 14 3.
The 14 3 cable has three. 14 has a white sheath and is good for up to 15 amps this is what you find with 14 3 or 12 3 in either case. Regardless of what 3 way switch wiring diagram. The wiring diagram of the three wire 2 way switch is as follows.