Power cutting out and leaving you in the dark is annoying — but it’s usually a sign your home’s safety system is doing exactly what it should. Here’s what’s going on, what you can safely check yourself, and when it’s time to call an electrician.
Tripping is protection, not failure
When a switch trips, it’s cutting power on purpose because it detected something it didn’t like — too much load, a faulty appliance, or a wiring fault. It’s the electrical equivalent of a circuit breaker doing its job. The goal isn’t to stop it tripping; it’s to find out why.
The three usual causes
- Overloaded circuit — too many appliances drawing power at once, common in older homes with fewer circuits.
- Faulty appliance — a failing kettle, heater, or power tool leaking current.
- Wiring fault — damaged or aged wiring, moisture in an outdoor circuit, or a failing connection.
The DIY step worth trying
If a circuit keeps tripping, unplug everything on it, reset the switch, then plug items back in one at a time. When the tripping returns, the last thing you plugged in is your likely culprit. If it trips again with nothing plugged in, that points to a wiring fault — and that’s one for a professional.
Safety switch or circuit breaker?
It matters which one is tripping. A circuit breaker trips on overload — too much current. A safety switch (RCD) trips on a current leak to earth, which is the kind of fault that can electrocute someone. If it’s your safety switch repeatedly tripping, treat it seriously: something is leaking current, and it’s worth finding out what.
When to stop and call an electrician
Call a licensed electrician if: the circuit trips with everything unplugged, the safety switch won’t reset, you smell burning or see scorching at the switchboard, or it keeps happening with no obvious cause. These aren’t things to keep resetting and hoping.
Based in the southern and western suburbs, we track down the cause and fix it properly. Give us a call on 0417 852 582.
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