Fantastic Electrical 3 Way Switch Wiring Diagram

This 3 way switch wiring diagram shows how to wire the switches and the light when the power is coming to the light switch.

Electrical 3 way switch wiring diagram. Wiring diagrams for 3 way switches 3 way switch diagram 2 above shows the electricity source starting at the fixture. A three way switch is fundamentally different in its operation from a regular two way switch. 3 way switch wiring diagram depicting all wires in the ceiling junction box.

The switches may be arranged so that they are in the same orientation for off and contrasting orientations for on. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. The black and red wires between sw1 and sw2 are connected to the traveler terminals.

In this diagram the incoming hot wire attaches to the first switch s common dark colored terminal. This is the most common and the easiest wiring diagram to follow of any of the wiring diagrams for a 3 way switch circuit. With these diagrams below it will take the guess work out of wiring.

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. In the 1st diagram below a 2 wire nm cable supplies power from the panel to the first switch box. This is the 3 wire cable which you must have to wire a 3 way light switch.

3 way switch is a multiway switching or interconnection of two or more electrical switches to control an electrical load from more than one location. This wire diagram shows the wiring for source power into the first three way switch then 3 wire cable to the next 3 way light switch and then on to the light or light fixtures. You must completely forget about the notion of a switch being a simple open closed circuit and look at the diagram of the circuitry of this modern alternative.

Typical 3 way switch wiring nm cable. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. 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.