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Repairing Light Fixture Electrical Wiring


By Dave Rongey - Summary:

What to do when a Light Fixture Does Not Work – The feed tested at 120volts the switch and the light tested at 120volts, but when I screw the bulb in the light it doesn’t work

Understanding Light Fixture Electrical Wiring

Lighting Question: I have a 120v feed going to a light, then to the switch, and back to the light.

  1. I ran new wire to the switch and light.
  2. The feed tested at 120v the switch and the light tested at 120volt.
  3. When I screw the bulb in the light it doesn’t work.
  4. I then wired the same light same bulb and plugged it in to a different outlet and it worked.
  5. I wired the same light and bub straight into the feed wire and the bulb wouldn’t work.
  6. I tested the socket and it showed 120v but the bulb wont work.
  7. I tried new bulb same result.

I am at a loss what could this be?

The Light Fixture Components are:

It should be simple but I’m  dumbfounded!
Background: Mary Ann, a Handy-Woman from Centre Alabama

Dave’s Reply:
Thanks for your Lighting Question Mary Ann.
Yup – these are the one’s that make you loose some hair – I know!

Checks for Light Fixture Electrical Wiring

  1. Wiring connections
  2. Wire splices

What to do when a Light Fixture Does Not Work

Considerations for the Electrical Troubleshooter

The Following resources will assist you with your electrical question:

Wiring Diagrams
3 Way Switch Diagram
electrical outlet wiring
outlet-wiring
Wiring Electrical Outlet for the Home
Home electrical wiring includes 110 volt outlets and 220 volt outlets and receptacles which are common place in every home. See how wiring electrical outlets for the home are done.

electrical wire
electrical-wire
Electrical Wire for the Home
Complete listing of electrical wire types and parts used for home projects with electrical code information serves as selection guidelines.

Light Switch Wiring
Light Switch Wiring
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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Wiring 3-Wire and 4-Wire Electric Range
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How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
Electrical Codes for Home Electrical Wiring
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