First Class Wiring Two Three Way Switches

The following is the simple schematic of a three wire 2 way switch wiring.

Wiring two three way switches. A three way switch is fundamentally different in its operation from a regular two way switch. Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches. A 3 way switch allows you to turn a light on or off from two different switches.

3 way switch wiring diagram. The wiring method will depend on whether your power goes to the switch first or the light first. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.

Knowing how to wire a three way lighting switch comes down to understanding the operation of this contraption. This is where diagrams come in handy and we are including them below along with step by step wiring instructions in the video format. 3 way switches are useful for large rooms with multiple entrances but require a bit more wiring than a standard single pole switch.

Take a closer look at a 3 way switch wiring diagram. The main difference between 2 way and 3. You can observe in the schematic that both the com terminals are connected together.

This might seem intimidating but it does not have to be. The first way of wiring uses a couple of two way light switches with a 3 wire control. Wiring 3 way switches is not complicated but making sure you are connecting the right wires could be a little tricky.

If you are trying to troubleshoot a 3 way switch operation you will need to identify the function of each wire. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. The l1 terminals of both the switches are connected to line or phase or live of the ac supply.