A Ground Fault Circuit Interrupter (GFCI) is a safety device that monitors electricity flow and instantly cuts power if it detects an imbalance, such as electricity traveling through water or a person, to prevent shock or fires[3][6]. To test one, plug in a device and press the TEST button; the device should stop working[4]. You can restore power by pressing the RESET button[4].
If the outlet will not reset, trips immediately, shows burn marks, or feels warm, stop troubleshooting and call a licensed electrician[3]. These signs often point to deeper wiring or circuit issues that require professional repair to keep your home safe[3].
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