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Wiring Diagram for Light Switches

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Summary: Fully explained wiring diagrams for switches including single 3-way switches and 4-way switches.

Residential Wiring Diagram for Switches

Single Pole Electrical Switch
Single switch operation.
For a light fixture or wall outlet.

3-Way Electrical Switch

Two switch operation.
Typically for hall lighting.

4-Way Electrical Switch

Switch from three or more locations.
Ideal for outside lighting.

Single Pole Switching
Single Pole Switch Wiring Diagram

Single Pole switching provides switching from one location only.

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3-Way Switching
3-Way Switch Wiring Diagram

3-Way Switching provides switching from two locations.

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4-Way Switching
4-Way Switch Wiring Diagram

4-Way Switching provides switching from three or more locations.

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