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Why Several Electrical Circuits May Not Be Working

How to Troubleshoot Home Electrical Circuit Problems – If the full power is not restored then it is very possible that your electrical service may have lost one side or one leg of the electrical power to the electrical service panel.


Possible Cause of Multiple Circuits Failing
Electrical Question:I blew a circuit breaker earlier today and fixed it.

Background: Gillian, a Homeowner from Three Rivers, Michigan.
See more about Home Wiring for Michigan

Dave’s Reply:
Thanks for your electrical wiring question Gillian.

How to Troubleshoot Home Electrical Circuit Problems

The Following will assist you troubleshoot your electrical wiring:

Repair Electrical Wiring
Troubleshooting

Circuit breaker panel
home-electrical-circuits

Circuit breaker
2-pole-circuit-breaker

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This link is helpful as a Homeowner
Do-It-Yourself Electrical


» You Can Avoid Costly Mistakes! «

Here's How to Do It:
Wire It Right with the help of my Illustrated Wiring Book

Great for any Home Wiring Project.


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Complete Guide to Home Electrical Wiring

Perfect for Homeowners, Students,
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Includes:
Wiring GFCI Outlets
Wiring Home Electric Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring Light Switches
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
How to Troubleshoot and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
NEC Codes for Home Electrical Wiring
....and much more.





Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.

Electrical Tips to Help You Wire it Right

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

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.

The Quickest Way to Check for Faulty Electrical Wiring!

The Plug-In Outlet Tester
This is the first tool I grab to troubleshoot a problem with outlet circuit wiring. This popular tester is also used by most inspectors to test for power and check the polarity of circuit wiring.
It detects probable improper wiring conditions in standard 110-125 VAC outlets Provides 6 probable wiring conditions that are quick and easy to read for ultimate efficiency Lights indicate if wiring is correct and indicator light chart is included Tests standard 3-wire outlets UL Listed Light indicates if wiring is incorrect Very handy and easy to use.

Strip Off Wire Insulation without Nicking and Damaging the Electric Wire!

The Wire Stripper and Wire Cutter
My absolute favorite wire stripping tool that I have had in my personal electrical tool pouch for years, and this is the tool I use to safely strip electrical wires.
This handy tool has multiple uses:
The wire gauges are shown on the side of the tool so you know which slot to use for stripping insulation.
The end of the tool can be used to grip and bend wire which is handy for attaching wire onto the screw terminals of switches and outlets..

The wire stripper will work on both solid and stranded wire. This tool is Very Handy and Easy to Use.

« Shower Light Switch Wiring Causes of Light or Switch Delay »


FAQs Frequently Asked Questions and Comments

4 Responses to “Why Several Electrical Circuits May Not Be Working”
  1. Greg says:

    I have the old screw in fuses still and had one blow. I had an air conditioner plugged into an outlet and went to use a vacuum from another outlet that is on same circuit and it blew. I replaced it but only 3 out of 6 outlets on that circuit are working now. Also the new fuse is very hot in the panel. Is it possible a neutral got disconnected but at the same time the fuse blew?

    • Dave Rongey says:

      Air Conditioner Electric Circuit Repair
      Hi Greg,
      Depending on the size of the air conditioner, it may add quite a load to an outlet circuit, and that is why many AC units require a dedicated circuit. Vacuum cleaners can require upwards of 12 amps, which can also place a considerable load on a shared outlet circuit. With both of these items running on the same circuit the circuit will definitely become overloaded, and in the process cause the wiring and outlets of the circuit to overheat, which can cause faulty wiring connections at one or more outlets. The outlets where the air conditioner and vacuum cleaner were plugged into should be inspected and repairs made as needed.
      I hope this helps,
      Dave

      • Greg says:

        Thanks for the reply. I’ve checked the outlets and they are OK. I’ve checked power to the other outlets and they each are about 120v but zero on the other three outlets. All the outlets have been upgraded in the past so there’s no backstabbing. Not sure what else to check.

        • Dave Rongey says:

          Hi Greg,
          Typically I start troubleshooting at the last outlet that has normal circuit power, and there is usually a connection that is lost at that location. Make sure you are checking the neutrals as well. If you are testing from hot to ground with a volt tester, and you are not testing from hot to neutral you will miss a possible problem where the neutral has been lost, which will cause the circuit to appear to be OK, when in fact it is not.
          I hope this helps you,
          Dave

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