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Electrical Wire and Cable
Electrician Training Electrical Certification wiring recessed light fixtures Electrical Wiring Electrical Troubleshooting and Electrical Repairs wire outdoor light fixture Home Electrical Wiring Diagrams
wiring home generator and transfer switch wiring a 220 volt range cord outlet Wiring for GFCI Outlets Wiring Outlets and a Switched Outlet Wiring and Installing Ceiling Fans and Remote Controls wire dimmer switch wiring diagrams for switches wiring a dryer cord and 220 outlet circuit breaker panel
Electrical Wire and Cable

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 Switch Wiring Diagram

Single Pole switching provides switching from one location only.

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3-Way Switch Wiring Diagram

3-Way Switching provides switching from two locations.

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4-Way Switch Wiring Diagram

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


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Home Electrical Wiring - Upgrade Electrical Wiring
Wiring 120 Volt Circuits
Wiring 240 Volt Circuits
Wiring Multi-Wired Circuits
Wiring Methods for Installing Home Electrical Circuit Wiring
Electrical Codes for Home Electrical Wiring
Electrical Troubleshooting and Repairs
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Electrical Tip

The Safest Way to Test Electrical Devices and Identify Electric Wiring!

The Non-Contact Electrical Tester
This is a testing tool that I have had in my personal electrical tool pouch for years, and is the first test tool I grab to help identify electrical wiring. It is a Non-contact tester, [amazon.com], I use for the detection of Standard Voltage in Cables, Cords, Circuit Breakers, Lighting Fixtures, Switches, Outlets and Wires. Simply insert the end of the tester into an outlet, lamp socket, or hold the end of the tester against the wire you wish to test. Very handy and easy to use.

Electrical Wiring Questions and Answers