3 Way Switch Wiring Diagram Power At Switch. Two three way switches control one light with the electric power coming through the first switch flowing to the second switch and then to the light fixture. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut.
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3 way switch wiring diagram depicting all wires in the ceiling junction box. Pick the diagram that is most like the scenario you are in and see if you can wire your switch. Wiring diagrams for 3 way switches.
Run new cable romex between the 3 way switches.
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. The white wire becomes the energized switch leg as indicated by using black or red electrical tape. The white wire of the cable going to the switch is attached to the black line in the fixture box using a wire nut. 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.
