Three Way Light Wiring

First run a 2 wire cable from the wall power to the black screw on 1 of the switches.

Three way light wiring.

Wiring diagram 3 way switch with light at the end. 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. The black and red wires between sw1 and sw2 are connected to the traveler terminals. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.

Three wire cable runs between the switches and 2 wire cable runs to the light. In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. This 3 way light switch diagram shows connections when the power comes into the first switch on to the second switch and then on to two or more lights switched by the 3 way circuit. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.

Three way switches allow for controlling a light fixture from two separate locations these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. Wiring a 3 way light switch. No longer allowed after 2011 nec if no neutral wire in switch boxes 3 way switch wiring diagram light fixture between switchesline voltage enters the first 3 way switch outlet box light fixture is located between switch boxes no longer allowed after 2011 nec if no neutral wire in switch boxes.