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3-Way Switch Wiring Diagram Variation #3

Wiring diagram for a 3-way switch, one of the many wiring diagrams showing different methods of wiring a three way switch circuit.  This electrical wiring diagram shows power into light switch Box #1 – wire to light from switch box #1, and from switch box #1 to three-way light switch box #2.


Note that in this case, a larger than normal device box is required at switch #1 location, due to box fill calculations (most regular size boxes will only accommodate five wires; in this situation, you will have seven wires).

NOTE:  This is a thumbnail diagram.  Click on it to enlarge it.

There are many variations for wiring a 3-way switch network.  See our wiring diagrams page for more ways to wire a three way switch circuit.

Need help understanding how a light switch (both single-pole and 3-way) works?  Watch this great video that shows how they work!

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