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Electrical Wire and Cable

How To Fix 3Way Light Switch Wiring

By Dave Rongey - Summary:

How to Get Your 3Way Light Switches Working: The Most Common Problems with 3Way Switches and How to Fix Them.

3Way Light Switch Wiring

Electrical Question: My dad has a light that will not work in his dining room.

3 Way Light Switch Problem 1


This electrical wiring question came from: Pete, a Handyman from Wentzville, MO.

3 Way Light Switch Problem 2

This electrical wiring question came from Charles, in Traverse City, Michigan.
See more about Home Wiring for Michigan

Dave’s Reply:
Thanks for your electrical wiring questions Pete and Charles.

How to Get Your 3Way Light Switches Working


Application: Wiring 3-Way Light Switches.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrician.
Tools Required: Basic Electricians Pouch Hand Tools and Voltage Tester.
Estimated Time: Depends on personal level experience and ability to work with tools.
Precaution: Identify the lighting circuit, turn it OFF and Tag it with a Note before working with the wiring.
Notice: Installing additional 3-way switch wiring should be done according to local and national electrical codes with a permit and be inspected.
Materials: Make sure replacement 3-way light switches have the same amperage and voltage rating as the original three way light switch, and is the switch is fully compatible with the electrical circuit, the light fixture and the type of light bulbs being used.

Basics of Wiring 3 Way Switches

3Way Switch #1

3Way Switch #2

Correcting the 3Way Switch Wiring Configurations

Testing Light Switch Wiring

IMPORTANT: If the circuit power for the light switches is not working then the wiring connections at the switch boxes, and the wiring at the light fixture box may need to be inspected and tested.

More about Wiring 3Way Switches
3 Way Switch Wiring Diagram

Topics related to 3-way and NO-kw2-Assigned
How To Wire 3-Way Switches Video
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3 Way Switch Wiring Diagrams

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Wiring a Light Switch – Diagram 1
Fully explained pictures and wiring diagrams about wiring light switches describing the most common switches starting with photo diagram 1.

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