How to Test a GFCI Breaker Outlet

GFCI stands for Ground Fault Circuit Interrupter. GFCI-protected outlets have been required in American homes since the 1970s. A GFCI-protected outlet compares the electrical current coming from the main panel with the electrical current returning to the panel. Any difference means the current must be taking a different route (such as through a person) to return to ground. When the GFCI detects a difference in current, it opens the circuit within 1/25 to 1/30 of a second, cutting off the power supply to the outlet.

Difficulty: Easy

Instructions

Things You'll Need:

• Lamp

1. Plug a lamp into the GFCI outlet and turn it on.

2. Press the "Test" button on the GFCI outlet. The "Reset" button will pop out and the lamp should turn off.

3. Press the "Reset" button. The lamp should turn on.

4. Contact an electrician if the lamp does not turn off when the "Reset" button pops out.

5. Replace the GFCI outlet if the "Reset" button does not pop out.

Tips & Warnings

• Test your GFCI outlets once a month.

References

• Wiring a House; Rex Cauldwell; 2002

Resources

• GFCI Fact Sheet