Main information
What it could mean
An extension lead that heats up, sparks, or stops providing power usually indicates it's overloaded or the cable itself is damaged.
Safety first
Don't use extension leads for high-power appliances on a continuous basis; they're meant for occasional use, not as a substitute for fixed wiring.
Next step
If the fault continues with a lead in good condition, the power point it's connected to is worth checking.
Frequently asked questions
Is it safe to use an extension lead for high-power appliances?
Not on a continuous basis; extension leads don't replace fixed wiring sized for that consumption.
How do I know if the problem's the lead or the original socket?
Test the same appliance directly in the wall socket; if it works fine, the problem's the lead.
Should I throw away a lead that's overheated once?
Safer to replace it, especially if the heating was noticeable or repeats.
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