Power Switch Light Switch 3 Way

In this light switch wiring diagram the power feed joins the circuit via the light fixture where a two wire cable c2 runs from the light to the first 3 way switch sw1 and a 3 wire cable c3 joins the two switches.

Power switch light switch 3 way.

Each 3 way switch in these examples are controlling the power source to the same load. Three way switches allow for controlling a light fixture from two separate locations these are usually used at the top and bottom of a flight of stairs or at two different entrances to a room. The hot source is spliced to the white wire which should be marked as. 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.

1 circuit power supply cable 2 electrical box where the light fixture is mounted 3 4 these wires must be connected to the common screw 5 light fixture. The white wire from the switch connects to the black wire from the circuit power supply cable. Three way light switch with power feed via the light. 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.

With a pair of 3 way switches either can make or break the connection that completes the circuit to the light. 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.