3 way switch wiring diagram. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together.

Power Switch Light 3 Way Fan 1 Fan Light Switched Separately
Three way wall switch wiring diagram. Typical 3 way switch wiring nm cable. 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. Take a closer look at a 3 way switch wiring diagram. Most common is the single pole switch the type used to control a light fixture from a single locationthe next most common is the three way switch which is commonly used to control a light fixture from two different locations. With these diagrams below it will take the guess work out of wiring. The black line wire connects to the common terminal of the first 3 way switch.
Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Wall switches used to control ceiling light fixtures or other fixtures come in three types. Three wire cable runs between the switches and 2 wire cable runs to the light. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. 3 way switch wiring diagram with line and load in the same switch box. An example of three way switch wiring with the line and load in the same 4 square electrical box.
The white wire between switches is not being used as a neutral. For example a long hallway or stairway might use a pair of three way. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. This might seem intimidating but it does not have to be. Traveler wires are interchangeable. Wiring a 3 way light switch.
In the above diagram the white wire must be re identified as a hot wire at each switch location. 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.