Electrical guide
Breaker keeps tripping: causes and when it's dangerous
By the Home Doctor team · Reviewed
Quick answer
A breaker that trips is doing its job: cutting power before wiring overheats. The usual causes are an overloaded circuit, a short circuit, a ground fault, or an arc fault picked up by an AFCI breaker. If it only trips when a space heater, microwave or hair dryer is running, it's probably an overload you can fix by moving things to other circuits. If it trips the instant you reset it, smells hot, or shows scorch marks, stop resetting it and call an electrician.
- How urgent
- Urgent
Repeated tripping means something is wrong. It becomes 'stop and call a pro now' if you see scorch marks, smell burning, or the breaker trips instantly on reset.
- DIY or pro
- Call a pro
Testing for an overload is safe to do yourself. Anything inside the panel, the wiring or an outlet is a licensed electrician's job.
Stop and call a pro now if
- Burning smell, scorch marks, or buzzing or crackling at the panel or an outlet: leave the breaker off and call an electrician.
- The breaker trips instantly every time you reset it: don't keep resetting it. That points to a short circuit.
- Water anywhere near the panel: don't touch it. Call an electrician.
Common causes and how to tell them apart
1. Overloaded circuit
- How to tell
- Trips a few minutes after several high-draw things run together, like a space heater plus a microwave.
- What fixes it
- Move heavy appliances to other circuits. A room that always needs more may need a new dedicated circuit.
2. Short circuit
- How to tell
- Trips immediately on reset, or the moment one particular device is plugged in. Sometimes a pop or scorch mark.
- What fixes it
- Unplug the device and don't use it. If it trips with everything unplugged, the problem is in the wiring.
3. Ground fault
- How to tell
- A GFCI outlet or breaker in a kitchen, bath, garage or outdoors trips, often when things are wet.
- What fixes it
- Find the wet outlet or device. Persistent ground faults need an electrician.
4. Arc fault
- How to tell
- An AFCI breaker trips seemingly at random, or with a specific appliance such as a vacuum.
- What fixes it
- Could be the appliance or a loose connection in the wiring. An electrician can tell which.
5. Worn breaker
- How to tell
- An older breaker trips below its rated load, or feels warm.
- What fixes it
- An electrician replaces the breaker. Never swap in a larger size.
Not sure which one you have?
Snap a photo. Home Doctor narrows it down, tells you how urgent it is, and prices the fix.
Diagnose it from a photoFirst diagnosis free. No account needed.
What you can safely try first
- 1Unplug everything on that circuit, then reset the breaker: push it firmly to Off, then On.
- 2If it holds, plug things back in one at a time to find the one that trips it.
- 3Note what was running when it tripped.
- 4Never tape or hold a breaker on, and never replace it with a bigger one.
When to call a pro
- It trips with everything unplugged.
- Any burning smell, heat, buzzing or scorch marks.
- GFCI or AFCI trips you can't trace to one device.
- It keeps happening after you've spread the load out.
What it costs
| Job | DIY parts | Pro, installed |
|---|---|---|
| Electrician diagnostic visit | — | $100–$300 |
| Replace a standard breaker | Not recommended | $150–$350 |
| Replace an AFCI or GFCI breaker | Not recommended | $200–$450 |
| Add a dedicated 20-amp circuit | Not recommended | $300–$1,000 |
| Panel upgrade | Not recommended | $1,800–$5,000 |
Ballpark US ranges as of September 27, 2026. Your region, access and the specifics of your home can move these a lot. Get two or three quotes for anything over a few hundred dollars.
What to tell the pro
The [kitchen / bedroom / bathroom] breaker trips [after a few minutes / immediately on reset / randomly]. It's a [standard / GFCI / AFCI] breaker. It happens when [these things] are running. With everything unplugged it [holds / still trips]. I [have / haven't] noticed a burning smell, heat or scorch marks.
Questions people ask
Is it safe to keep resetting a tripped breaker?
Once or twice to test, yes. If it trips instantly, trips over and over, or you smell burning, leave it off and call an electrician.
Can a breaker go bad?
Yes. Breakers wear out and can start tripping below their rated load. An electrician can test it and replace it with the correct size.
Why does my breaker trip when it rains?
Usually a ground fault: water getting into an outdoor outlet, light fixture or damaged wiring. Keep that circuit off and have an electrician find the wet spot.
Get an answer for your house
Every house is different. A photo gets you the likely cause, how urgent it is, and a fair price, in about 30 seconds.
Diagnose it from a photoFirst diagnosis free. No account needed.
General guidance, not a substitute for a licensed professional who can see the problem in person. If you smell gas, see sparks or smoke, or anyone is hurt, leave the area and call 911.