This might seem intimidating but it does not have to be. This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch.
Wiring A 3 Way Switch
Three wire light switch diagram. This is an updated version of the first arrangement. First run a 2 wire cable from the wall power to the black screw on 1 of the switches. No longer allowed after 2011 nec if no neutral wire in switch boxes 3 way switch wiring diagram light fixture between switchesline voltage enters the first 3 way switch outlet box light fixture is located between switch boxesno longer allowed after 2011 nec if no neutral wire in switch boxes. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. 3 way switch wiring diagram line to light fixtureline voltage enters the light fixture outlet box. Take a closer look at a 3 way switch wiring diagram.
3 way switch wire diagram power to light switch. With these diagrams below it will take the guess work out of wiring. The red and black are used for hot and the white neutral wire at the switch box allows for powering a timer remote control or other programmable switch. In this diagram the incoming hot wire attaches to the first switchs common dark colored terminal. This type of switch may be found at most hardware stores or electrical supply distributor. How to wire a light switch diagram 1.
Interested in a 4 way switch wiring diagram. You should consider the option of installing a matched pair of master and slave switches which will act just like two three way switches. 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. The two hot wires of three wire cable connect to a pair of. Because the electrical code as of the 2011 nec update requires a neutral wire in most new switch boxes a 3 wire cable runs between the light and switch.
Gallery of Three Wire Light Switch Diagram
