What homeowners usually notice
- One or several garage outlets are dead
- Outlets stop working when a freezer, compressor or power tool runs
- A GFCI outlet will not reset or trips again quickly
- Outlets feel loose, warm or discolored
- Garage lights work but outlets do not
What to do right now
- Find and press reset on any GFCI outlet in the garage, outside or in bathrooms
- Check the breaker panel and reset any tripped breaker once
- Unplug heavy tools or appliances before resetting
- Leave a warm or discolored outlet unused
Likely causes
Tripped GFCI
Garage outlets are required to have GFCI protection. A single tripped GFCI can shut off several outlets, and it is not always in the garage.
Tripped breaker
Power tools, compressors, space heaters and freezers draw heavy current. Running several on one circuit trips the breaker.
Worn or damaged outlets
Garage outlets get hard use, and worn contacts, loose plugs and damage from equipment are common.
Loose connection
Outlets wired in a chain depend on each connection. One loose connection can leave several downstream outlets dead.
Moisture
Humidity, rain blown in through open doors, or water on the floor can trip GFCIs and corrode outlets.
Safe checks you can make
- Check which outlets are dead and which still work
- Note what was running when they stopped
- Look for moisture near outlets
- Check outlets for scorch marks without removing covers
Leave outlet covers, switch plates and the panel cover in place. Noting what you see and hear is enough; testing inside boxes belongs to an electrician.
Is this something you can fix yourself?
Many garage outlet problems are fixed with a reset. Find every GFCI outlet in the garage, outside and in nearby bathrooms and press reset firmly. Check the panel for a tripped breaker or GFCI breaker and reset it once. If the circuit trips again when a freezer, compressor or space heater starts, the circuit is likely overloaded, and moving that load to another circuit may be enough for now. If the GFCI will not reset, keeps tripping with nothing plugged in, or the outlets stay dead after resets, the problem is in the wiring and needs a licensed electrician.
When professional help is the right call
- A GFCI that trips repeatedly with nothing plugged in
- A breaker that trips again right after reset
- Warm, discolored or melted outlets
- A burning smell in the garage
- Outlets that stopped working after water exposure
Safety first. If you smell burning, see scorching or sparks, or an outlet feels hot, turn the breaker off and call. A breaker that trips repeatedly should be left off. If there is smoke, flame or sparking that continues, get out and call 911.
What an electrician typically checks
An electrician will trace the circuit to find which GFCI or breaker protects the garage, test each outlet and connection, and look for signs of overloading or moisture. They also check whether garage outlets have the GFCI protection current electrical code calls for.
Fixes include replacing worn outlets, correcting GFCI protection, repairing loose connections or adding dedicated circuits for freezers, compressors or a workshop. Garage electrical upgrades and GFCI outlet installation are the most common services.
Keeping it from coming back
Label the GFCI and breaker that protect your garage (the guide on why a GFCI keeps tripping helps if it trips often), keep heavy loads spread across circuits, and keep outlets dry. Many garages in Hoover, Pelham and other suburbs were wired with a few outlets that now power freezers, tools and chargers, so adding circuits can prevent repeated trips.