With these diagrams below it will take the guess work out of wiring. Connect the wire marked common to the black or dark colored screw.
Wiring Diagram Way Switch New Way Smart Switches Wiring
Wiring a 3 way switch. With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. 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. Connect the ground wire to the green screw. The ground wire is pigtailed with a wire connector at the switch boxes and the ceiling box. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. Connect the two remaining traveler wires to the two brass or light colored screws.
In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. Typical 3 way switch wiring nm cable. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. 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. Traveler wires are interchangeable. Power through switch light is controlled by two three way switches with the light between the switches and the power first going through a switch then to the light and onto the second three way switch.
Three wire cable runs between the switches and 2 wire cable runs to the light. Wiring diagram 3 way switch with light at the end. A 3 wire nm connects the traveler terminals of the first and second 3 way switch together. The black line wire connects to the common terminal of the first 3 way switch. Each 3 way switch in these examples are controlling the power source to the same load. Fixture between two three way switches.
3 way switch 2 3 way wire which has black white and red coated wires and of course a copper ground wire. In this diagram the electrical source is at the first switch and the light is located at the end of the circuit. When wiring a 3 way switch first screw the terminal screws of the new switch until they are difficult to turn. 3 way switches are useful for large rooms with multiple entrances but require a bit more wiring than a standard single pole switch. While wiring a 3 way switch is more involved than something simple like installing an electrical box for an electric fireplace the task can be simple enough if you follow along with these instructions. The wiring method will.
Take a closer look at a 3 way switch wiring diagram. A 3 way switch allows you to turn a light on or off from two different switches. 3 way switch wiring diagram. 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. Wiring a 3 way light switch. The black and red wires between sw1 and sw2 are connected to the traveler terminals.
This might seem intimidating but it does not have to be. 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.
Gallery of Wiring A 3 Way Switch
