Why does my breaker keep tripping? 6 causes and what to do

A breaker that trips is doing its job: it cuts the power before a wire overheats. One trip is information. A breaker that keeps tripping is telling you something needs to change.

1. The circuit is overloaded

This is the most common cause. A space heater, a hair dryer and a vacuum on one 15 amp circuit will trip it every time. The fix is to move a load, or to have a dedicated circuit installed for the appliance that draws the most.

2. A short circuit

If the breaker trips the instant you reset it, a hot wire is touching a neutral or a ground somewhere. It could be a damaged cord, a failed appliance or a cable pinched inside a wall. Unplug everything on the circuit and try once more. If it still trips, leave it off and call for electrical troubleshooting.

3. A ground fault

Moisture in an outdoor box or a bathroom outlet lets current leak to ground. GFCI devices catch this quickly. If a GFCI outlet trips after rain, water is getting in.

4. An arc fault

Newer homes have AFCI breakers that detect sparking at loose connections and damaged cords. They are sensitive on purpose. Repeated trips deserve a proper look, not a swap to a standard breaker.

5. The breaker is worn out

Breakers weaken with age and heat. If one trips with very little on the circuit, or the handle feels loose, it may need replacing.

6. The panel is too small for the house

When several circuits trip regularly and the lights dim whenever the air conditioner starts, the panel itself may be undersized. That is a job for an electrical panel upgrade.

When it is an emergency

Call an emergency electrician straight away if the breaker or panel is hot, you smell burning, or you see scorch marks. Do not keep resetting it.

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