How to Install a GFCI Receptacle

A GFCI receptacle is an electrical outlet that has added protection to prevent an electrical shock due to equipment failure or water. These GFCI outlets are usually installed in places where water can come into contact with an electrical outlet. The kitchen and bathroom are the usual installation areas. However, GFCI outlets are becoming normal to have throughout the home. This is especially true for garage, basement, and outdoor outlets. Installing a GFCI receptacle is a moderately challenging project for a DIY homeowner.

Step 1: Turn Power Off to Outlet

Before doing any work on the GFCI receptacle you need to turn the power off to the outlet that you are replacing. This should be done through the circuit breaker box. Find the breaker that controls the outlet and turn to the 'Off' position. Place some tape over the breaker to ensure that nobody will come along and turn it back on. Use a voltage meter to test the outlet to make sure the power is off.

Step 2: Remove Faceplate from Outlet

Use the screwdriver to remove the faceplate covering the electrical outlet that is already in place. 

Step 3: Remove Outlet from Box

Once the faceplate is removed you can see that there are two more screws holding the outlet into the electrical box. Use a screwdriver to remove these and pull the electrical outlet from the box. On the side of the electrical outlet are other screws that hold the wires in place. Loosen these screws and remove the wires. Now you can remove the old outlet. 

Step 4: Straighten Wires

With a pair of pliers you can straighten out the wires that were attached to the old receptacle. 

Step 5: Cut Non-Metallic Wires

In order to make the connection between the GFCI receptacles and the old wires you need to use some non-metallic wires. A 12/2 wire is what is needed. Cut six inches of each color wire. You will need white, black, and green. 

Step 6: Connect Wires to GFCI Receptacle

Take a look at the receptacle. You will notice that there are four terminals on the GFCI outlet. Two of these should have tape covering them. Leave the tape there and loosen the other two screws. Strip away 3/4 inch of wire insulation on each of the three wires. Fashion a 'U' shape in the end of each of the wires. Place the white wire on the silver terminal and the black on the copper. The green goes over the green screw. Tighten them securely. 

Step 7: Connect Wires to Old Wires

The new wires can now be connected to the wires that are in the wall. Connect the like wires together and secure with the wire nuts. Tighten them so that you make sure the wires do not come apart. 

Step 8: Install Outlet into Electrical Box

Gently push the wires into the electrical box and make sure they are not kinked. Set the GFCI receptacle into the box and secure with the screws. There should be one on each end of the outlet. Place the faceplate back on and turn the power on.