Three Way Light Switch Diagram
The fixture s hot wire connects.
Three way light switch diagram. 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. Take a closer look at a 3 way switch wiring diagram. 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. This might seem intimidating but it does not have to be.
Regardless of what 3 way switch wiring diagram you re following you ll need to use a 3 wire cable to connect the two 3 way light switches. With these diagrams below it will take the guess work out of wiring. The two hot wires of three wire cable connect to a pair of brass colored traveler terminals on each switch. Pick the diagram that is most like the scenario you are in and see if you can wire your switch.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. Interested in a 4 way switch wiring diagram. This is the 3 wire cable which you must have to wire a 3 way. Three wire cable runs between the switches and 2 wire cable runs to the light.
The black and red wires between sw1 and sw2 are connected to the traveler terminals. So what you should see if you have correct 3 wire electrical cable romex is a black power white neutral and now a 3rd red wire.