3 way switch diagram 2 above shows the electricity source starting at the fixture.
Three way electrical switch.
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The three way switch is a variation of the standard single pole switch which controls a light only from one location.
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Wiring diagrams for 3 way switches.
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.
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