A tripping circuit breaker or RCD is your electrical system’s way of keeping you safe. It detects a problem and cuts the power to prevent damage, overheating, or the risk of electric shock or fire.

Here are the most common reasons it happens, what you can check, and when it’s time to call a professional.

Common reasons your electricity keeps tripping

  1. An overloaded circuitRunning too many high-power appliances on the same circuit can exceed its capacity and cause it to trip.
  2. A faulty applianceAn appliance with a fault, such as a heater, washing machine or kettle, can cause an overload or short circuit.
  3. Moisture or waterWater ingress in sockets, lights or outdoor fittings can cause a fault and trip the RCD.
  4. A short circuitLive and neutral wires touching, or damaged wiring, creates a short circuit and trips the breaker.
  5. An RCD is detecting a faultRCDs are very sensitive. Even a small leakage of electricity to earth can trip the circuit.
  6. A problem with your fuse boardAn old or incorrectly neutral bond, loose connection or failing device in the consumer unit can cause repeated tripping.

What can I safely check myself?

  • Unplug or switch off appliances one by one, then reset the breaker.
  • Check for any damaged cables or appliances.
  • Make sure nothing is overloaded on the same circuit.
  • If it’s an RCD that’s tripping (usually marked with a “T” test button), test it first, then reset.

When should I call an electrician?

  • The tripping keeps happening.
  • It trips immediately after resetting.
  • You notice burning smells, heat or sparks.
  • Your fuse board is old or makes strange noises.
  • You’re not sure what the problem is.
Electrical safety

If you notice burning smells, smoke, sparking, heat, exposed wiring or repeated unexplained tripping, stop using the affected circuit and contact a qualified electrical professional. Don't remove electrical covers or attempt electrical repairs yourself.

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Frequently asked questions

Is it dangerous if my electricity keeps tripping?

Repeated tripping can indicate a fault, overload or safety issue, so it should be checked by a qualified electrician.

Why does my RCD keep tripping?

An RCD trips when it detects leakage to earth. Moisture, faulty appliances or wiring faults can cause it.

Can an appliance cause my electricity to trip?

Yes. A faulty appliance can overload a circuit or create a fault that trips the breaker.

Why does it trip when it rains?

Rain can reveal moisture ingress in outdoor fittings, sockets or cables.

Do I need an electrician if the breaker keeps tripping?

Yes, if the fault repeats or you notice heat, smell, sparks or visible damage.