Head to your fuse box and make sure there is no power coming to the room. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.
3 Way Switch With Power Feed Via The Light Switch Two Lights
Wiring a 3 way light switch. The black line wire connects to the common terminal of the first 3 way switch. Connect the two remaining traveler wires to the two brass or light colored screws. Its likely youll also need to replace the existing switch box with a larger one to accommodate the extra wires for the 3 way switch. B connect the black hot wire coming from the romex cable that leads to your circuit panel to your new 3 way light switch 1 you will connect the hot wire to the hot terminal on the 3 way switch which is usually black and stands alone. Screw your two boxes and light fixture into place then gather your supplies. Wiring the switches 1.
The cable should also have a ground wire or a total of four wires in the cable. Three way switches require a three wire cable. Take a closer look at a 3 way switch wiring diagram. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Either way complete these five steps for 3 way light switch wiring. Slide the 2 wire nm power cable.
Turn off the correct circuit at your electrical panel. The power wire the neutral wire and the traveller or switch wire. The system also requires three way switches. This first step will eventually send power directly to the light fixture. Connect the wire marked common to the black or dark colored screw. Interested in a 4 way switch wiring diagram.
This might seem intimidating but it does not have to be. Connect the ground wire to the green screw. How to wire 3 way light switch in this video we explain how three way switching works to connect a light fitting which is controlled with two light switches. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn. Add an electrical box for the second three way switch in the basement. Before you even start wiring you want.
A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. We look at the us color coding wires. 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. Flip off power in the room youre working. Wiring 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. With these diagrams below it will take the guess work out of wiring.
Gallery of Wiring A 3 Way Light Switch
