How to Repair a GFI Problem
How to Locate and Repair a GFI Outlet or Circuit Problem: The Most Common Problems with GFCI Outlets and How to Fix Them.
Guide to GFI Outlet Problems and How to Fix Them
[ad#block]Electrical Question: I have a problem with GFI installation.
- The GFI was installed by new electricians.
- A problem occurs when I turn on an appliance the GFI trips off.
- I checked the wiring of the GFI and it seems that hot and neutral wires were wired correct.
- What would you recommend to help me find the problem?
Thank you in advance.
This home electrical repairs question came from: Don, from Tampa, FL.
Thanks for your electrical troubleshooting question Don.
How to Locate and Repair a GFI Outlet or Circuit Problem
Application: Testing GFCI Outlet and Circuit Wiring.
Skill Level: Intermediate to Advanced.
Tools Required: Basic Electricians Pouch Hand Tools a Voltage Tester or Plug-In Circuit Analyzer.
Estimated Time: Depends on personal level experience, ability to work with tools, the extent of the electrical repairs, the number of outlets that are affected and access to each location.
Precaution: Identify the GFCI outlet circuit, turn it OFF and Tag it with a Note before working with the wiring.
The Most Common Problems with GFCI Outlets and How to Fix Them
- GFI Outlet Problems
A GFI circuit problem can be caused by several things including the devices or appliances that are connected to the GFI circuit.
- Check what is Plugged Into the Outlet
Start by checking the appliance that is connected when the GFI trips off because there may be a problem with the internal wiring for the appliance.
- Isolating the Problem
If the GFI does not trip off when other things are connected then the GFI circuit wiring may be correct.
- Check the Wiring of the GFI Outlet
- The Incoming circuit wiring is attached to the LINE side.
- The Outgoing circuit wiring is connected to the LOAD side.
- Segments of the GFI Circuit
Test each item separately in order to isolate the problem, then check the suspected device for wiring problems or abnormalities.
More about GFI Circuits and Electrical Wiring
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.
How to Wire GFI Outlets
GFCI and GFI Wiring Diagrams
The features and benefits of GFCI outlets and receptacles will give you a clear understanding of the importance why these safety devices are required by code to help protect you and your family against accidental electrical shock hazards.
This list of articles will help you learn about the features and benefits provided by GFI and GFCI Receptacles and how they are wired.
Using Testers to Identify Electrical Problems
Testers to Help Solve Electrical Problems
Troubleshooting Electrical Wiring
Types of Electrical Testers
Electrical Wiring Tools
A listing of the electrical tools I use on most all of my electrical jobs and projects.
The following may also be helpful for you:
Be Careful and Be Safe - Never Work on Energized Circuits!
Consult your Local Building Department about Permits and Inspections for all Electric Wiring Projects.
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.
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My GFI works fine except my intercom radio hums when on, but does not hum when I trip the GFI, the radio is on it’s own separate circuit, what is the problem?
The hum may be coming from something that is plugged into or connected to the Load side of the GFI circuit. If this is a stand alone GFI then the GFI may be older or need replacing.
I hope this helps,