Electrical Three Way Switch Wiring Diagram
The basic 3 way switch wiring diagram this is the most common and the easiest wiring diagram to follow of any of the wiring diagrams for a 3 way switch circuit.
Electrical three way switch wiring diagram. Do this before you disconnect any wires from the switches. All three way switch and 2 way switch wiring diagrams have the same basic components. Diy electrical wiring a 3 way switch.
Wires consisting of a line a load a neutral a pair of travelers and two 3 way switches. Typical 3 way switch wiring nm cable in the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. In this diagram the incoming hot wire attaches to the first switch s common dark colored terminal.
Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Take a closer look at a 3 way switch wiring diagram. With these diagrams below it will take the guess work out of wiring.
Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. This might seem intimidating but it does not have to be. If you are trying to troubleshoot a 3 way switch operation you will need to identify the function of each wire.
The white wire becomes the energized switch leg as indicated by using black or red electrical tape. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together.
This wire diagram shows the wiring for source power into the first three way switch then 3 wire cable to the next 3 way light switch and then on to the light or light fixtures.
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