GFCI outlets — the ones with TEST and RESET buttons, found in bathrooms, kitchens, garages, basements, and outdoors — protect you from electric shock by cutting power the instant they sense current leaking to ground. When one trips, here's how to bring it back, and how to tell when tripping is a sign of a real problem.
How to reset it, step by step
First, unplug whatever was running when the power died — a faulty appliance is the most common trigger. Then press the RESET button firmly; you should feel and hear a click as it latches. Power should return immediately.
If RESET won't stay in, press TEST first (this fully clears the mechanism), then press RESET again. Still nothing? Check the breaker for that area — if the breaker is also tripped, reset it at the panel first, then the GFCI.
Why one tripped GFCI kills several outlets
This is the part that confuses most homeowners. A single GFCI outlet protects every standard outlet wired downstream of it. So one GFCI in your bathroom might also protect outlets in a second bathroom, the garage, and an outdoor receptacle. When it trips, all of those go dead even though they look normal — they have no buttons of their own.
If outlets are dead but you can't find a tripped GFCI, look in less obvious spots: the garage, a bathroom you rarely use, the basement, or behind a piece of furniture. The dead outlets and the GFCI are almost always in the same general area or share a common circuit. For a broader power loss, see why are my outlets not working.
Why GFCIs trip — and when to worry
A GFCI trips because it senses even a tiny imbalance between the current going out and coming back, which means some current is leaking to ground — through a person, through moisture, or through a fault. An occasional trip from a wet outdoor outlet after rain, or from a failing appliance, is the device working correctly.
Repeated tripping is a message. Unplug everything downstream and reset; if it holds, reconnect devices one at a time until it trips to find the faulty appliance. If it trips with nothing plugged in, you have a wiring fault or moisture intrusion that needs investigation — common around pool, spa, and outdoor wiring. Never "solve" a nuisance-tripping GFCI by replacing it with a standard outlet; that removes shock protection the code requires in those locations.
When to call an electrician
Call a licensed electrician if a GFCI won't reset after you've cleared downstream loads and checked the breaker, if it trips immediately every time, if the outlet is warm or scorched, or if pressing TEST does nothing (a sign the device has failed and no longer protects you). We replace failed GFCIs, trace downstream faults, and verify that every location requiring GFCI protection actually has it. Call 416-837-4038 or book a visit.