Four Way Light Switch Wiring Diagram

I have a few of the most common ways in wiring a 4 way switch to help you with your basic home wiring projects. A 4 way switch wiring diagram is the clearest and easiest way to wire that pesky 4 way switch.

Wiring Diagram 4 Way Switch Multiple Lights Light Switch Wiring Electrical Wiring Diagram Light Switch

This diagram illustrates wiring for a 4 way circuit with the electrical source at the light fixture and the switches coming after.

Four way light switch wiring diagram. The 4 way is used when you want to control the light or lights from two or more locations. To view it at full size click on the diagram. Do you need a 3 way switch wiring diagram.

This diagram is a thumbnail. This 4 way switch diagram 1 shows the power source starting at the left 3 way switch. Two wire cable is run from the light to sw1 and 3 wire cable runs between the three switches.

This 4 way switch diagram 2 shows the power source starting at the fixture. In the third box black and red are travelers with white going to the common. Keep in mind that each light switch will count as two wires when calculating your box fill.

The white neutral splices to the white to the light. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wirenut. Click here to access note.

Power from light fixture to light switch. For complete instructions on wiring a basic 4 way switch see our wiring a 4 way switch article. Rear view of an old four way switch with copper screw terminals on one side and brass screw terminals on.

At the center box with a four way switch black and red from the first box goes to two terminals with the black and red going to the third box to the other two terminals. 4 way switch wiring diagrams national electrical code.

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