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Electrical Wire and Cable


Wiring a GFCI Outlet with No Ground Wire

How is a GFCI outlet wired for a 2-wire circuit that does not have a ground wire? Wiring a GFCI Outlet on a 2-Wire Circuit.


GFCI Outlet Wiring Problem
Electrical Question: How is a GFCI outlet wired for a 2-wire circuit that does not have a ground wire?

I am trying to install a GFCI outlet to a 2-wire circuit that does not have a ground wire. When I use the white wire to connect the ground wire back to the box it is not working. I read an article about how to change a 2-wire receptacle with a ground for a GFCI, and it said it needed the green wire to connect the ground wire from the GFCI outlet back to the box. Will it make any difference if I use the white wire instead of the green wire?

This electrical wiring question came from Lindsey, a General Contractor in Queens, New York.

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

Wiring a GFCI Outlet on a 2-Wire Circuit

Application: GFCI Outlet.
Skill Level: Intermediate to Advanced – Best performed by a Licensed Electrical Contractor, or Certified Electrician.
Electrical Tools Required: Basic Electricians Pouch Hand Tools, Voltage Tester, and appropriate Safety Gear.
Estimated Time: Depends on the personal level experience, ability to work with tools, install electrical circuit wiring, and the available access to the project area.
Electrical Safety: Identify the electrical power source to the GFCI Outlet, turn it OFF and Tag with a Note before working with the electrical wiring.
Electrical Wiring Parts and Materials: Electrical parts and materials for the GFCI Outlet should be approved for the specific project and compliant with local and national electrical codes.
Electrical Codes and Inspections: Installing or changing home electrical wiring should be done according to local and national electrical codes as adopted in Queens, New York. A permit and inspections may also be required.

Kitchen 2-Wire Circuit and GFCI Outlet

This electrical wiring project is about an Electrical Problem with a GFCI Outlet in the Kitchen of a Apartment.

Wiring a GFCI Outlet on an Ungrounded Circuit

When a 2-wire circuit does not have a ground wire and a GFCI outlet is installed nothing should be connected to the ground terminal. However, if the GFCI outlet is installed in a metal outlet box then a wire may be installed from the ground terminal of the GFCI outlet and bonded to the metal outlet box.

The GFCI will still sense when there is a ground fault.

You can test this with a GFCI plug-in tester and you will see that it works just fine.

More about Wiring a GFCI Outlet

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


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