Sourced fact
Unusual heat, burning odour, blackening, scorch marks, melting, sparks or smoke are stop-use signs.
Electrical Safety First: Extension leads, cable reels and block adaptors
Ownership · UK
Stop portable EV charging and keep people clear. Do this if a plug, socket, lead, control box or connector is unusually hot, scorched, melted or giving off a burning smell. Leave affected equipment untouched and out of service, even if the symptom appears to stop. Call 999 for smoke or fire, and otherwise arrange a registered competent electrician before any reuse.
Electrical Safety First: Extension leads, cable reels and block adaptors
Reviewed
For portable EV charging in the UK, as reviewed on 12 August 2026, unusual heat, hot-plastic or burning odour, blackening, scorch marks, melting, sparks or smoke is a Red stop-use condition. Keep people clear and leave the equipment untouched. Smoke or fire requires 999; other heat damage requires a registered competent electrician before reuse.
Electrical Safety First: Extension leads, cable reels and block adaptors
Unusual heat, burning odour, blackening, scorch marks, melting, sparks or smoke are stop-use signs.
Electrical Safety First: Extension leads, cable reels and block adaptors
Affected portable charging equipment remains untouched and out of service after the symptom stops.
Electrical Safety First: Extension leads, cable reels and block adaptors
Smoke or fire requires 999, while other heat damage requires registered electrical assessment before reuse.
Electrical Safety First: Extension leads, cable reels and block adaptors
Stop portable EV charging for abnormal heat, a burning smell, blackening, scorch marks, melting, sparks or smoke and obtain professional help.
Heat damage may remain significant even when charging has ended or an odour has faded. A stopped symptom is not evidence that the equipment may be reused.
Smoke or fire transfers control to the Fire and Rescue Service through 999. Other heat or scorch damage remains out of service for registered electrical assessment.
Keep affected portable charging equipment out of service and keep people clear of any hot, damaged, sparking or smoking item.
Immediate action: Call 999 for smoke or fire; otherwise arrange a registered competent electrician.
Heat damage may remain significant even when charging has ended or an odour has faded. A stopped symptom is not evidence that the equipment may be reused.
Smoke or fire transfers control to the Fire and Rescue Service through 999. Other heat or scorch damage remains out of service for registered electrical assessment.