Why Your Breaker Keeps Tripping (And How to Fix It)

A circuit breaker has one job: interrupt the flow of electricity when something goes wrong. When it trips, it's not malfunctioning — it's working exactly as designed. The question is why it's tripping, because the three main causes require different responses.

Cause 1: Overload (most common)

An overload happens when you're drawing more current than the circuit is rated for. Plug too many appliances into one circuit, and the breaker trips to protect the wiring from overheating. This is normal protection, not a defect.

How to identify it: The breaker trips when you're running multiple appliances at the same time on the same circuit. It resets fine and works normally until you overload it again.

• Fix: Move some devices to different circuits. If you regularly need more power in one area, adding a new circuit is the correct long-term solution.
• Calculate your load: A 15A circuit at 120V provides about 1,440 watts (use 80% = 1,152 watts for continuous loads). If your devices add up to more than that, you need another circuit.

Cause 2: Short circuit

A short circuit happens when a hot (live) wire directly touches a neutral or ground wire, causing a sudden massive spike in current. The breaker trips almost instantly.

How to identify it: The breaker trips immediately when you turn on the circuit, often with a loud snap. There may be a burning smell. The breaker feels hot.

• Common causes: Damaged cord on an appliance, a faulty device, or damaged wiring inside the wall
• Fix: Unplug all devices from that circuit. If the breaker holds when nothing is plugged in, test each device one at a time to find the faulty one. If the breaker trips immediately even with nothing plugged in, there's a wiring problem — call an electrician.

Cause 3: Ground fault

A ground fault is when electricity takes an unintended path to ground — often through a person. On a regular breaker circuit, a ground fault large enough to trip the breaker may already be enough to cause a serious shock. This is why GFCI protection exists: it trips at 5 milliamps, long before a regular breaker would respond.

If a GFCI outlet or GFCI breaker keeps tripping: there may be a genuine ground fault — moisture in an outdoor outlet, a faulty appliance, damaged wiring — or the GFCI itself may be at end of life (they don't last forever).

Cause 4: The breaker itself is failing

Breakers have a finite lifespan. After years of tripping and resetting, the internal mechanism wears. An aging breaker may trip at loads well below its rating, or it may fail to trip when it should (which is more dangerous). A breaker that trips repeatedly under a normal load that never used to cause problems is likely worn out.