The three way switch is a variation of the standard single pole switch which controls a light only from one locationa third type is the four way switch which is used in conjunction with two three way switches to control lighting from more than two locationsthis configuration may be used in open plan homes or in large kitchens or great rooms where a central bank of lighting fixtures might. With these diagrams below it will take the guess work out of wiring.

How To Wire A 3 Way Light Switch Family Handyman
How do you wire a 3 way light switch. 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. This is a scenario where you have 2 light switch locations that control a single light fixture unless. Take a closer look at a 3 way switch wiring diagram. Today we give you the tools knowledge to remove and install a 3 way light switch without electrocuting yourself. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together.
This might seem intimidating but it does not have to be. 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. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Interested in a 4 way switch wiring diagram.
Wiring a 3 way light switch. Traveler wires are interchangeable. Typical 3 way switch wiring nm cable. The black line wire connects to the common terminal of the first 3 way switch.