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How to Rewire a Problem GFCI Outlet Circuit


By Dave Rongey - Summary:

Methods for Rewiring a GFCI Outlet Circuit: Ground Fault Circuit Protection for One or More Outlets, Wiring the LINE and LOAD Side of the GFCI, GFCI and GFI Wiring Diagrams.


Wiring a GFI Outlet Circuit

Electrical Question: I have a GFCI outlet in the garage that serves four outlets.

  • It gets tripped every time it rains because the 1st downstream outlet is outdoors, vulnerable to rain, and not well sealed because of brick and mortar issues.
  • I am trying to resolve these issues, but also want to install a GFCI at this outdoor outlet.
  • I want this new GFCI to control only itself, nothing downstream.
  • If I supply power to downstream 2,3,4 outlets from the line side of my new outdoor GFCI instead of the load side, will the original GFCI that is upstream still protect #2, 3, 4?

This electrical wiring question came from: Denny, from Rowlett, Texas.

See more about Home Wiring for Texas

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

Methods for Rewiring a GFCI Outlet Circuit

Application: Rewiring a GFCI Outlet.
Skill Level: Beginner to Intermediate.
Tools Required: Basic Electricians Pouch Hand Tools and a Voltage Tester.
Estimated Time: Depends on personal level experience, ability to work with tools and the number of outlets that will be replaced.
Precaution: Identify the GFCI outlet circuit, turn it OFF and Tag it with a Note before working with the wiring.
Notice: Installing additional GFCI Circuit wiring should be done according to local and national electrical codes with a permit and be inspected.

Ground Fault Circuit Protection for One or More Outlets

  • GFCI Protection for One Outlet
    • The electrical wiring for a GFI outlet circuit may be rewired to prevent problem tripping once you understand the method of the circuit wiring as described in the links below.
  • Wiring a GFCI to Protect Other Outlets
    • GFCI outlets may be wired so they only provide protection for one outlet or several outlets.
  • Wiring the LINE and LOAD Side of the GFCI
    • The correct wiring adjustments may be made once the LINE or power source has been identified then the proper LINE and LOAD wiring configurations mat be made.

IMPORTANT
When rewiring any ground fault protected devices it is important to maintain GFCI protection at the required locations.

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This list of articles will help you learn about the features and benefits provided by GFI and GFCI Receptacles and how they are wired.

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Learn How to Wire it Right with my
Complete Guide to Home Electrical Wiring
Perfect for Homeowners, Students,
Handyman, Handywomen, and Electricians
Includes:
Wiring GFCI Outlets
Wiring Home Electrical Circuits
120 Volt and 240 Volt Outlet Circuits
Wiring 3-Wire and 4-Wire Electric Range
Wiring 3-Wire and 4-Wire Dryer Cord and Dryer Outlet
Troubleshooting and Repair Electrical Wiring
Wiring Methods for Upgrading Electrical Wiring
Electrical Codes for Home Electrical Wiring
....and much more.

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