This might seem intimidating but it does not have to be. Wiring a 3 way light switch is certainly more complicated than that of the more common single pole switch but you can figure it out if you follow our 3 way switch wiring diagram.
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How to wire a 3 way switch. Connect the ground wire to the green screw. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Traveler wire terminals these are located on each side of the switch towards the top of the switch. Take a closer look at a 3 way switch wiring diagram. A 3 way switch will not have the words on or off written on it. First run a 2 wire cable from the wall power to the black screw on 1 of the switches.
Wiring a 3 way light switch. Replace any regular switches with the 3 way switches. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. To wire a 3 way light switch youll need 2 3 way light switches 2 2 wire non metallic cables 1 3 wire non metallic cable and 2 6 inch grounding wires. Before you start installing take a look at your new 3 way switch to identify all of the terminals that you will be connecting wires to. Each 3 way switch in these examples are controlling the power source to the same load.
Connect the wire marked common to the black or dark colored screw. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn. With these diagrams below it will take the guess work out of wiring. Then a 4 wire cable going between the two 3 way switches and then a 3 wire cable going from the switches to the load. When wiring a 3 way switch circuit we will be using a 3 wire cable known as romex coming from the source such as the breaker box. Connect the two remaining traveler wires to the two brass or light colored screws.
Gallery of How To Wire A 3 Way Switch
