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GFCI Wiring Diagram Feed Through Method

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electrical-wiring Summary: This article and wiring diagram will show you how to install a GFI using the feed through method which will protect more than one outlet.

GFI Wiring Diagram using the Feed Through Method to Protect Outlets


A typical application for this method would be to protect more than one bathroom, or the all of the receptacles in your garage.


Below you will see some photos of recent projects that I have selected to help you with your project.


The GFCI Receptacle will have LINE and LOAD areas to attach your wires to. The "LINE" is the set of wires coming from the panel or power source, the "LOAD" is the wire set leaving the receptacle box to the other downstream receptacles to be controlled by the GFCI.

Protecting more than one receptacle from one GFCI

This method is used when installing the GFCI as the first receptacle and wiring it so that it provides protection for all of the receptacles downstream on the circuit.

A typical application for this method would be to protect more than one bathroom, or the all of the receptacles in your garage.

Below you will see some photos of recent projects that I have selected to help you with your project.

The GFCI Receptacle will have LINE and LOAD areas to attach your wires to. The "LINE" is the set of wires coming from the panel or power source, the "LOAD" is the wire set leaving the receptacle box to the other downstream receptacles to be controlled by the GFCI.

Take a look at a typical Feed-Thought Installation
[Click on the images to Enlarge]

check local code reqs
GFCI Feed Through Wiring 1
 Pre-wiring for the feed through method
GFCI Feed Through Wiring 2
GFCI Feed Through Wiring 3
GFCI Feed Through Wiring 4
Label the romex electrical wire
supplying the power.
Folding the wires in
until installation.
This junction box is ready for the GFCI.
GFCI Feed Through Wiring 5
GFCI Feed Through Wiring 6
GFCI Feed Through Wiring 7
To install: fold wires out.
Identify the set to
be used for the LINE feed.
Identify the LINE area of the
GFCI Receptacle.
GFCI Feed Through Wiring 8
GFCI Feed Through Wiring 9
GFCI Feed Through Wiring 10
Remove the Yellow Warning sticker to expose the LOAD Area and Terminals.
First attach the
LINE Black wire to the LINE Hot Wire terminal, and the
LINE White wire to the LINE White Wire Terminal.
Now attach the
LOAD Black wire to the LOAD Hot Wire terminal, and the
LOAD White wire to the LOAD White Wire Terminal.
GFCI Feed Through Wiring 11
GFCI Feed Through Wiring 12
GFCI Feed Through Wiring 13
Fold the wires carefully back inside the receptacle box and install the GFCI receptacle.
Mount the GFI cover plate.
After all the downstream receptacles have been installed, the circuit is turned on and tested at all locations.
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