3 Way Switch Wire Diagram. The three way switch wiring diagram depicted at the top of this post is probably the most common method for wiring three way switches. When wiring a 3 way switch circuit all we want to do is to control the black wire hot wire to turn on and off the load from 2 different locations.
Before we get to wiring diagrams here is how the 3 way switch terminals are color coded. Turn off the branch circuit from your electrical panel and add all the electrical boxes required. And this is what you will need for 3 way switch wiring.
New wiring diagram 3 way dimmer switch light switch wiring light switch house wiring.
Wiring diagram 3 way switch with light at the end in this diagram the electrical source is at the first switch and the light is located at the end of the circuit. 3 way switch is a multiway switching or interconnection of two or more electrical switches to control an electrical load from more than one location. This method of running the wire is common when several light fixtures share one common breaker and the switches are both on the same wall. The black and red wires between sw1 and sw2 are connected to the traveler terminals.