Plug Has Melted

A plug on one of your appliances has melted, deformed, or fused to the socket.

£80 – £220Emergency

What is this?

A melted plug means extreme temperatures have been reached at the plug-socket interface — well above the safe operating range. UK BS 1363 plugs are made from thermoset or thermoplastic materials that can withstand normal temperatures, so for a plug to melt, the internal temperature has exceeded 200+ degrees Celsius. This is an extremely dangerous situation and a clear sign of a severe electrical fault.

Common causes

Loose wire connections inside the plug generating extreme resistance heating
Worn socket contacts not gripping the plug pins, causing sustained arcing
Massive overload — far more current flowing than the plug or socket is rated for
Wrong fuse rating in the plug allowing excessive current to flow without blowing
Poor quality or counterfeit plug not made to BS 1363 standard
Short circuit in the appliance cable near the plug

Is it dangerous?

This is an emergency. A melted plug means a fire has nearly occurred — or may have occurred briefly before self-extinguishing. Do not attempt to force the plug out of the socket if it is stuck. Turn off the circuit at the consumer unit first. If the plug is still warm, do not touch it. If you can see exposed wiring or active melting, evacuate and call 999.

Can I fix it myself?

No. If the plug is stuck in the socket, do not force it out — turn off the circuit at the consumer unit first, then allow it to cool completely. Do not use the socket or the appliance. Both the plug and socket must be replaced by an electrician. The appliance itself should be checked before use.

When to call an electrician

Call an emergency electrician immediately. A melted plug has reached temperatures that constitute a near-fire event. The socket will certainly need replacing, and the wiring behind it may be damaged. Do not attempt to use the socket for any purpose.

What will an electrician do?

Safely remove the melted plug from the socket (may require isolating at the consumer unit first)

Replace the socket outlet and inspect the back box and wiring for heat damage

Test the circuit for faults that may have contributed to the overheating

Inspect the appliance cable and fit a new plug if the appliance is otherwise safe

Check that the correct fuse rating is used in the replacement plug

Test the ring circuit to ensure integrity

Typical cost

£80 – £220

Includes socket replacement and plug fitting. Emergency callout rates may apply. Wiring damage behind the socket increases costs.

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Sources & References

Frequently Asked Questions

Why did my plug melt?

A melted plug is almost always caused by a poor connection inside the plug, worn socket contacts, or a combination of both. The connection generates heat, which melts the plastic, which makes the connection worse, creating a dangerous cycle that escalates very quickly.

Is the appliance safe to use with a new plug?

The appliance should be tested before reuse. If the melting was caused by a loose plug connection, a new plug may be all that is needed. But if the appliance itself has a fault causing excessive current draw, it needs repair or replacement.

Can a melted plug cause an electrical fire?

Yes. A melted plug has reached temperatures well above the ignition point of many household materials. If the plug had not been noticed, it could easily have ignited surrounding materials.

Should I report this to anyone?

If the plug was a branded product, consider reporting it to the manufacturer and Trading Standards. If you believe the plug was counterfeit, report it to Trading Standards. Counterfeit plugs are a significant fire risk in the UK.

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