Wiring a 3 way light switch.
Power switch light switch 3 way.
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.
Each 3 way switch in these examples are controlling the power source to the same load.
Three way light switch with power feed via the light.
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.
This switchlight is designed for single 3 way light switches where two or more light switches control a set of overhead lights.
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.
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.
The hot source is spliced to the white wire which should be marked as.
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.
With a pair of 3 way switches either can make or break the connection that completes the circuit to the light.