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Causes of Dim or Flickering Lights


By Dave Rongey - Summary:

What would cause lights to flicker and go dim then brighter? Common Problems that Cause Dim and Flickering Lights.

Flickering Light Problem

Electrical Question: What would cause lights to flicker and go dim then brighter?

Please any info would be greatly appreciated.
Thank you, Jerry

Background: Jerry, a Homeowner from East Palestine, Ohio.

Dave’s Reply:
Thanks for your electrical question Jerry.

Dim and Flickering Lights Problem

Application: Electrical Troubleshooting a Dim and Flickering Light Problem.
Skill Level: Advanced – Best performed by a Licensed Electrical Contractor.
Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester or Volt Ohm Meter and a Circuit Tracer.
Estimated Time: Depends on the type and age of the home, the condition of the electric wiring, and the access to the circuits and wiring to be evaluated.
Precaution: Identify the affected circuit, turn it OFF and then Tag it with a Note before performing any wiring or inspections or electrical repairs. Electrical troubleshooting and repairs requires specific tests of the electrical circuits. Working in an electric panel is dangerous due to arc flash hazards and the possibility of electric shock.
Notice: Repairs to Home Electrical Wiring should be made according to local and national electrical codes. Installing new or replacement electrical wiring may require a permit and inspections.

Common Problems that Cause Dim and Flickering Lights

From what has been described in this electrical question, there are a few possible problems with the electrical wiring of this circuit which I will explain below:

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