Short answer: A breaker keeps tripping because it is doing its job: it shuts off power when a circuit is overloaded, has a short circuit or ground fault, detects arcing, or when the breaker itself is wearing out. Unplug what was running, reset the breaker once, and note what happens. If it trips again right away, trips with nothing plugged in, or you smell burning, stop resetting it and call a licensed electrician.
What a tripping breaker is telling you
A circuit breaker is a safety switch. When it senses more current than the wire can safely carry, or current going somewhere it should not, it cuts power to protect the wiring and your home. A breaker that trips once in a while under a heavy load is normal. A breaker that trips over and over is a sign that something on the circuit needs attention.
The type of trip matters, because each cause has a different fix. Some are as simple as moving a space heater to another outlet. Others point to damaged wiring that should only be handled by a licensed electrician.
The five common causes
Most repeat trips come down to one of these. The pattern of when it trips is usually the best clue.
- Overload: too many things running on one circuit, such as a space heater, hair dryer and microwave together. It usually trips after a few seconds or minutes of heavy use.
- Short circuit: a hot wire touches a neutral wire, often from a damaged cord, a loose connection, or a failing device. It usually trips instantly, sometimes with a pop or spark.
- Ground fault: current leaks to ground, often through water or a damaged appliance. GFCI breakers and outlets in kitchens, bathrooms, garages and outdoors are designed to catch this.
- Arc fault: an AFCI breaker detects sparking from loose connections, damaged wire, or a pinched cord. AFCI trips can also come from certain motors or electronics, so they are worth having checked rather than ignored.
- Failing breaker: breakers wear out. One that trips under light loads, feels warm, or will not stay reset may need to be replaced.
Safe checks a homeowner can do
You can do a few things safely before calling anyone. Keep your hands dry, stand on a dry floor, and do not remove the panel cover.
- Note what was running when it tripped, and which rooms and outlets lost power.
- Unplug or switch off everything on that circuit.
- Push the breaker firmly to the full OFF position, then back to ON. Reset it only once.
- Plug things back in one at a time. If one device trips it every time, that device or its cord is the likely problem.
- If it is a GFCI outlet that tripped, press its reset button and see whether it holds.
- Move heavy-draw appliances like space heaters to a different circuit to see if the trips stop.
When to stop resetting and call an electrician
Resetting a breaker again and again does not fix the problem, and it can let a damaged wire keep heating up. Stop and call a licensed electrician if you see any of the warning signs below.
- It trips immediately after you reset it, even with everything unplugged
- It will not reset at all, or will not stay in the ON position
- You smell burning or see scorch marks, melted plastic, or sparks at an outlet, switch or the panel
- The breaker or panel feels warm or buzzes
- Lights flicker or dim on that circuit when it is not tripping
- Trips keep happening even after you have moved loads to other circuits
Overloaded circuits in older Seattle-area homes
Many homes around Shoreline, Seattle and the north end were wired long before space heaters, home offices, and kitchen appliances became common. A few circuits often serve a lot of rooms. If trips happen mainly in winter or when everyone is home, the circuits may simply be carrying more than they were designed for.
The fix might be a new dedicated circuit, rebalancing loads, or, if the panel is full or the service is small, a panel or service upgrade. An electrician can tell you which one your home actually needs.
What an electrician will do
A licensed electrician will ask about the pattern of trips, test the circuit and breaker, and look for loose connections, damaged wire, or failing devices. If the breaker itself is worn, it can be replaced with a compatible one. If the circuit is overloaded, they can explain your options, from adding a circuit to upgrading the panel.
All City Electric has handled troubleshooting and repair for homes in King and Snohomish Counties since 1971. Call (206) 533-6333, Monday through Friday, 8:00 to 4:30.
General information for homeowners; every home is different, so we confirm specifics on site. Last reviewed 2026-10-19.
Get a quote for your home
All City Electric has been a family-owned, licensed and insured Shoreline electrician since 1971. Call (206) 533-6333 or request a free quote.