A circuit breaker keeps tripping because it is detecting a problem, such as too much current, a short circuit or a ground fault. In some cases, the breaker itself is worn or faulty.
Tripping is a safety feature, not the problem itself. Finding out why it happens is the key to fixing it.
Overloaded Circuits
An overload happens when devices on one circuit draw more current than the circuit is designed to carry. Space heaters, hair dryers, microwaves, window air conditioners and vacuum cleaners are common culprits.
If a breaker trips only when certain devices run at the same time, an overload is a likely cause. Spreading devices across different circuits may help, but repeated overloads can mean the home needs more circuits. Kitchens and home offices are common places for this, since they often have several high-demand devices in one area.
Short Circuits and Ground Faults
A short circuit happens when a hot wire touches a neutral wire or another conductor. This causes a sudden surge of current, and the breaker trips quickly. Damaged cords, faulty appliances and loose wiring can all cause shorts.
A ground fault happens when current takes an unintended path to ground. Moisture, damaged insulation and faulty appliances can be involved. GFCI devices are designed to trip quickly when they detect this.
If a breaker trips immediately after you reset it, even with nothing plugged in, a short circuit or ground fault may be present. Leave it off and have it checked.
Arc Faults and Worn Breakers
AFCI breakers trip when they detect arcing, which can happen at loose connections or damaged wires. Some electronics and motors can also trigger them.
Breakers can wear out too. An older breaker may trip at lower loads than it should. A breaker that feels hot, looks damaged or trips without a clear cause may need to be tested.
Why Professional Diagnosis Matters
It is tempting to keep resetting the breaker, but repeated resets can allow a fault to cause damage. Never replace a breaker with a larger one to stop the trips. The breaker must match the wiring it protects, and a larger breaker can let the wiring overheat.
An electrician can test the circuit, check connections and look at devices on that circuit to find the real cause. The fix might be a new circuit, a repaired connection, a replaced device or a new breaker.
If you see smoke, smell burning or notice the panel feels hot, leave the area and call 911 if needed.
If your breaker keeps tripping, our electrical troubleshooting page explains how the cause is tracked down. For breaker problems at the panel, our circuit breaker repair page covers common breaker issues. Contact us and tell us when the trips happen, and we can help you plan the next step.