Three Way Light Switch Circuit Diagram

In this diagram two 3 way switches control a wall receptacle outlet that may be used to control a lamp from two entrances to a room.

Three way light switch circuit diagram. 3 way switch wiring diagram depicting all wires in the ceiling junction box. This 3 way light switch wiring diagram shows how to do the light switch wiring and the light when the power is coming to the light fixture. The first step in any electrical project is to make sure there is no power going to the circuit you plan to be working on. Take a closer look at a 3 way switch wiring diagram.

Red and blue wires link traveler terminals of both switches. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In the ceiling light fixture electrical box one black wire from a 3 way switch gets connected to the black load wire on the light fixture. In this diagram power enters the fixture box.

Three wire cable runs between the switches and 2 wire cable runs to the light. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The black and red wires between sw1 and sw2 are connected to the traveler terminals. This might seem intimidating but it does not have to be.

In the above 3 way switch wiring diagram at each switch the black wire gets connected to the copper or black screw. Three wire cable runs between the switches and the outlet. The black hot wire connects to the far right switch s common terminal. Traveler wires are interchangeable on each switch.

Turn the power off at circuit breaker. This circuit is wired the same way as the 3 way lights at this link. 3 way switch diagrams for multiple light fixtures. 3 way switched outlet wiring.

It is true that there are several wiring configurations for wiring 3 way light switches and all of the wiring configurations will depend on where the incoming circuit power is located and once that is identified the rest of the three way wiring connections are straight forward. Interested in a 4 way switch wiring diagram. The black line wire connects to the common terminal of the first 3 way switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box.

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. Typical 3 way switch wiring nm cable. 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.