Electrical
Dead outlet? Check the GFCI first
When outlets in a bathroom, kitchen, garage or outdoors suddenly go dead, the usual cause is a tripped GFCI, and it may sit in a different room. Find the outlet with TEST and RESET buttons, press RESET firmly, and power usually comes back. If it trips again right away or won't reset, stop and call a licensed electrician.
Half the bathroom outlets just quit. The hair dryer won't turn on, the night light is out, and the breaker panel shows nothing tripped. Before you decide the wiring is shot, go looking for a GFCI. More often than not, one tripped somewhere else in the house and took these outlets down with it.
How one GFCI controls outlets in other rooms
A GFCI (ground fault circuit interrupter) is the outlet with TEST and RESET buttons in the middle. It compares the current going out on one wire with the current coming back on the other. If a few thousandths of an amp go missing, which can mean electricity is taking a path through water or a person, it cuts power in a fraction of a second.
Here's the part that trips people up. A single GFCI can protect every ordinary outlet wired after it on the same circuit. Electricians call those outlets downstream, or on the load side. When that one GFCI trips, every outlet it protects goes dead too, and none of them have buttons to tell you why.
Those outlets don't have to share a room with the GFCI. A builder might put one in the garage that also feeds the porch and a bathroom. Two bathrooms sometimes share a single GFCI in whichever one was wired first.
Where to look
| Where | Why it's a suspect |
|---|---|
| Other bathrooms | Bathrooms often share one GFCI, especially in older homes |
| Garage | A favorite spot for a GFCI that also feeds exterior outlets or a bath |
| Outside walls, porch, patio | Exterior GFCIs trip from rain and moisture, and some feed indoor outlets |
| Kitchen counters | Countertop outlets are usually protected, sometimes all from one device |
| Basement, laundry, utility areas | Unfinished and damp spaces commonly have one |
| The breaker panel | Some homes use GFCI breakers, which have a small test button on the breaker |
Every house is wired differently. What's required depends on when the home was built and your local code.
One shortcut: look closely at the dead outlet. GFCIs usually come with small stickers reading "GFCI Protected," and careful installers put them on the outlets downstream. Spot one and you know there's a GFCI to hunt for.
How to reset it
- Unplug everything from the dead outlets. A faulty hair dryer or an old appliance may be what tripped it, and leaving it plugged in can trip it again the instant you reset.
- Find every GFCI you can. Walk the spots in the table. It's common to find one tripped and another perfectly fine.
- Press RESET firmly. You should hear or feel a click. If the button won't stay in, the GFCI itself may have no power, so check the breaker panel for a tripped breaker before going further.
- Test the dead outlets. Plug in a lamp or a phone charger to confirm power is back.
- Plug things back in one at a time. If it trips the moment one particular item goes in, that item is the likely problem, not your wiring.
Stop here if: the GFCI trips again the second you reset it, won't reset even after you've checked the breaker, feels warm, buzzes, smells like burning or shows scorch marks, or if the outlets got wet from a leak or flooding. Something on that circuit is faulting. Don't keep resetting it, don't unscrew outlet cover plates, and never open the breaker panel cover. Call a licensed electrician.
GFCI vs AFCI: two different jobs
These two get mixed up constantly, even on the phone with electricians. They guard against different dangers.
GFCI: protects people
Trips on a tiny leak of current, the kind that happens when electricity finds a path through water or a body. Usually found where water and power meet: bathrooms, kitchens, garages, outdoors and laundry areas. Often an outlet, sometimes a breaker.
AFCI: protects the house
Watches for arcing, the small sparks from a crushed cord, a loose connection or a nail through a wire, which can start a fire. Usually a breaker in the panel, often covering bedrooms and living areas in newer homes.
Where each one is required depends on when your home was built and which code your area has adopted, so check local code or ask an electrician before assuming yours is missing something. Some breakers combine both kinds of protection in one device.
Keep your GFCIs working
Manufacturers generally recommend testing GFCIs once a month. Press TEST, and the outlet plus everything downstream should go dead. Press RESET to bring the power back. If pressing TEST doesn't cut the power, that device isn't protecting anyone and should be replaced by an electrician.
GFCIs don't last forever, and ones in damp spots like exterior walls or next to a shower may wear out sooner. A GFCI that trips at random with nothing plugged in, or one that's getting harder to reset, is worth having looked at.
For electricians: sharing this with customers
Dead outlet calls are some of the easiest to sort out on the phone. Before you roll a truck, ask whether there's a tripped GFCI anywhere, and walk the caller through the likely spots. When the reset works, you've saved them a service fee and yourself an unpaid drive, and they'll remember who helped. When it trips again right away, you know it's a real call and you arrive knowing which circuit to start on.
Put this page on your website's FAQ or send it to new customers after a first visit. For the calls that really can't wait, see what counts as an electrical emergency, and the electricians hub has more on handling the phone. If a customer's dead outlet turns out to be a warm, buzzing panel instead, point them to the panel warning signs.
Common questions
Why would a GFCI in the garage control a bathroom outlet?
It comes down to how the house was wired. One GFCI placed at the start of a circuit can protect every outlet after it, and that first outlet might be in the garage, outdoors or another bathroom. It's common and allowed in many places, but it confuses people because nothing in the dead room shows a tripped button.
Can I replace a GFCI outlet myself?
Rules on homeowner electrical work vary by location, and some areas require a permit or a licensed electrician. A GFCI also has to be connected to the correct line and load terminals, or the outlets after it can lose protection with no visible sign. If you're not certain, have a licensed electrician do it. It's usually a short visit.
Why does my outdoor GFCI trip when it rains?
Moisture getting into an outdoor outlet or a plugged-in cord is a classic trigger, and tripping is the GFCI doing its job. A weatherproof in-use cover that closes over plugged cords helps. If it trips every time it rains even with nothing plugged in, water may be getting into the box or wiring, and an electrician should check it.
Is a GFCI that keeps tripping dangerous?
The tripping is the protection working. The danger is whatever is causing it: water in a box, a damaged cord, a failing appliance or a wiring fault. Unplug everything on the circuit and reset once. If it still trips immediately, leave it off and call a licensed electrician rather than resetting it over and over.