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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

3Way and 4way Switch Wiring

3way 4way switch diagram
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Summary: 3 way and 4 way switches and how they are wired for home lighting applications.

Wiring 3way and 4way Switches




3 way and 4 way switches are often used for applications where 3 or more switches are required.

Ideal locations would be a long hallway where there are more than two bedrooms and bathrooms which are accessed from the same hallway.

Light switches for the hallway light may be conveniently located outside each door leading into the hallway. In these applications 3 way and 4 way light switches may be used.

3way and 4way Switch Wiring Diagram


3way and 4way switch diagram

Special planning must be taken when wiring 3way and 4way switches that will work together in the same area.

The 3-ware cable is installed through each light switch box location, however the 3wauy switches are installed at each end of the hallway and 4way switches are installed in all the switch locations in between the 3way switch locations.

There are several ways to wire 3way and 4way switches, but the key to wiring then is where the power enters the switching circuit , and where the wiring feeds up to the light fixtures.


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Electrical Tips to Help You Wire it Right

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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 that I use to easily Detect 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.

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Electrical Wiring Questions and Answers