Ground fault circuit interrupter (GFCI) testers are used to check for improper wiring conditions in GFCI devices such as electrical receptacles. They detect leakage currents that are smaller than ...

Look for two buttons, labeled TEST and RESET, on the face of the GFCI receptacle. Press the TEST button. You should hear an ...

GFCI devices are protected circuit breakers that most building codes require in areas which contain water lines. GFCI de-energizes the circuit if an unsafe flow of current to ground is detected.