Fault finding
Why does my safety switch keep tripping?
This guide explains the common reasons, the safe checks you can do, and what photos help if you need a quote.
Common causes
Usually the circuit is telling you something.
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Faulty appliance
A damaged kettle, heater, washer or outdoor device can trip the board.
A damaged kettle, heater, washer or outdoor device can trip the board.
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Moisture or weather
Water ingress after rain, storms or cleaning can trigger a protective trip.
Water ingress after rain, storms or cleaning can trigger a protective trip.
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Overload or wiring fault
Older wiring or too many loads on one circuit can create recurring trips.
Older wiring or too many loads on one circuit can create recurring trips.
Worth knowing
The unplug test, properly explained
Turn the safety switch back on, then unplug everything on the affected circuit before switching individual appliances back on one at a time. If a specific appliance trips it again, that's your answer — a faulty appliance, not a wiring fault. If nothing you plug back in trips it, the problem is more likely in the fixed wiring or the switch itself.
Either way, a repeat trip after this test is worth booking in — a safety switch tripping is doing its job, but the underlying cause still needs to be found.
FAQs
Safety switch questions
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Can I keep resetting it?
Only if it is safe and there are no signs of heat, smell or water damage.
Only if it is safe and there are no signs of heat, smell or water damage.
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Should I unplug appliances first?
Yes. A simple unplug test can help narrow the problem before a quote.
Yes. A simple unplug test can help narrow the problem before a quote.
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When is it urgent?
If the switch trips repeatedly, or there is smoke/heat, it’s time for electrician help.
If the switch trips repeatedly, or there is smoke/heat, it’s time for electrician help.