Practical guidance from Kore Electrical
The practical answer
Possible causes include a faulty appliance, moisture, damaged wiring, an external circuit problem or combined leakage from several items. Unplugging recently connected portable appliances may identify an obvious cause, but repeatedly resetting a device that will not hold is not a repair. Burning smells, water or visible damage mean the circuit should remain isolated pending professional attention.
This guidance is general and cannot replace inspection or testing of the actual installation. If there are signs of danger, isolate the affected circuit where safe and seek professional help.
When should I stop resetting it?
If the device trips again, will not stay on, or there is heat, a burning smell, water or visible damage, leave the affected circuit off and arrange professional help. Do not open the consumer unit or bypass a protective device. If there is fire or immediate danger, move away and call 999.
What details help an electrician find the fault?
Note which rooms or circuits lose power, what was running at the time, whether rain is involved and whether the fault is intermittent. A photograph of the closed consumer unit and its labels can help, if safely accessible. No cover needs removing.
Is urgent attendance available?
Normal working hours are Monday–Friday, 8:00–17:00. Call to ask about availability; Kore does not advertise a guaranteed 24-hour emergency service. For a power cut affecting neighbouring properties, contact the electricity network operator on 105.
Further electrical safety guidance: Electrical Safety First.