Guide to Wiring a GFCI Outlet with Two Wires

Wiring a GFCI Ground Fault Circuit Interrupter outlet with only two wires is a simple task, requiring just a few tools and a bit of care. Follow these steps to ensure a safe and functional installation.

Tools and Materials Needed

GFCI outlet Wire strippers Screwdriver (optional) Voltage tester for safety

Steps to Wire a GFCI Outlet

1. Turn Off Power

Before you start, make sure to turn off the circuit breaker that supplies power to the outlet you're working on. Use a voltage tester (if available) to verify that the power is off.

2. Remove the Existing Outlet

If you are replacing an existing outlet, remove it from the wall box by unscrewing it and disconnecting the wires.

3. Identify Your Wires

Typically, you will have two wires: a black "hot" wire and a white "neutral" wire. If you have a ground wire (bare or green), it is recommended to connect it, but it is not required for the GFCI to function.

4. Connect the Wires to the GFCI

Connect the black "hot" wire to the gold screw on the GFCI outlet. Connect the white "neutral" wire to the silver screw on the GFCI outlet.

5. Secure Connections

Ensure the wires are securely attached to the screws. Loop the wire around the screw and tighten it, or insert the wire into the back of the GFCI outlet (depending on the design).

6. Install the GFCI Outlet

Push the wires back into the electrical box and mount the GFCI outlet to the box using the screws provided.

7. Restore Power

Turn the circuit breaker back on.

8. Test the GFCI Outlet

Press the test button on the GFCI outlet to ensure it is functioning properly.

Important Notes

Ground Wire

If you have a ground wire, connect it to the green grounding screw on the GFCI. If there is no ground wire, the GFCI will still function, but you will not have a grounded outlet.

Local Codes

Always check local electrical codes and regulations, as they may have specific requirements for GFCI installations.

Note: If you are unsure or inexperienced with electrical work, seeking professional help is highly recommended. The consequences of a poorly wired GFCI outlet can be very dangerous.