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ByDave Rongey © Ask the Electrician 2017 Author, Licensed Electrical Contractor
» Home Electrical Wiring Guide Book

How to Ground Outlets and Receptacles

Here are some Electrical Tip for Home Outlets – Metal receptacle outlet boxes must be grounded, and one method is to pigtail the ground wire so that it is attached to the outlet and the metal outlet box using a Green grounding Screw.

Methods for Grounding Receptacle Outlets

Electrical Question: I recently set out to replace the almond 3-prong outlets in our new-to-us-home (built 1971) with white outlets.

This electrical wiring question came from: Sonja, a Homeowner from Andover, Massachusetts.
See more about Home Wiring for Massachusetts

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

How to Ground Receptacle Outlets

More about Receptacles and Pig Tail Wiring for Outlets:

I am Trying to Replace 2-Prong Receptacles with a 3-Prong.
When I opened the cover plate I see 2 black wires and 2 whites withing a metal box. Can it still be done with the 3 prong receptacle? Can I just pigtail a wire from the receptacle ground to the box?
I was expecting 1 black and 1 white, so don’t know what it means to have 2 of each.
Please help and give me some guidelines. Thanks.

This home electrical repairs question came from: Norman, from Chattanooga, Tennessee

Dave’s Reply:
Thanks for your electrical wiring question Norman.
Norman, yes – you can pigtail the black and white wires to wire to a receptacle, however you cannot install a 3-prong grounded outlet if there is no ground wire.

Electrical Code for How Many Wires in Junction Boxes

Electrical outlet wiring
outlet-wiring

Junction boxes for outlets
electrical-wiring

using electrical testers
digital-tester

For more information about Outlet Wiring
How to Install Electrical Outlets
Outlet Wiring


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