Why Does My Breaker Keep Tripping? 7 Causes and What to Do Next
A breaker is doing its job when it trips. The question is not whether it is broken — it is what it is protecting you from. These are the seven causes we find most often, roughly in order of how common they are.
1. Simple overload
Too much current on one circuit. A space heater and a microwave on the same kitchen circuit is the classic. If unplugging something fixes it and the breaker resets cleanly, that is an overload. The permanent fix is a dedicated circuit.
2. Short circuit
A hot conductor touching a neutral or a ground. The breaker trips instantly, often with a bang or a flash, and it will not reset while the fault is present. Do not keep trying. This needs tracing, not resetting.
3. Ground fault
Current leaking to ground, usually through moisture. Outdoor receptacles, garages, crawlspaces and bathrooms after a storm are prime suspects in Alabama. A GFCI will trip on this by design.
4. Arc fault
AFCI breakers trip on the signature of an arcing connection — a damaged cord, a nail through a cable, a loose device screw. They also nuisance-trip on some motors and older vacuum cleaners. If an AFCI trips repeatedly with nothing obvious plugged in, take it seriously.
5. A failing breaker
Breakers wear out. One that has tripped hundreds of times, or that has been running near its rating for years, can start tripping at a lower current than it should. Replacing a single breaker is a small job.
6. A loose connection
Loose lugs at the panel, back-stabbed receptacle connections, or wire nuts that were never tightened properly. These heat up, and heat causes intermittent tripping that seems random. This is also the cause behind most scorch marks we find.
7. A failing appliance
Motors that are on their way out — a well pump, a compressor, a garbage disposal — draw far more current than they should on start-up. If the breaker trips only when one specific appliance runs, you have narrowed it down yourself.
How to narrow it down safely
- Unplug everything on the circuit, then reset the breaker.
- If it holds, plug items back in one at a time, waiting a minute between each.
- If it trips with nothing plugged in, stop. That is a wiring fault, not a load problem.
- If the breaker or the panel cover feels warm, or you smell anything burning, switch off the main and call an electrician immediately.
When it is an emergency
Trips accompanied by a burning smell, a warm panel, scorch marks, buzzing, or a breaker that will not reset at all are emergencies. Our line is open 24 hours — call (888) 633-7804 or see emergency electrician services.