What is this?
An electrical fire is caused by a fault in the wiring, a socket, an appliance, or the consumer unit that generates enough heat to ignite surrounding materials. Electrical fires can spread rapidly and produce toxic fumes. They require a specific response — you must never use water to extinguish an electrical fire as water conducts electricity.
Common causes
- Overloaded socket or extension lead overheating and igniting
- Arcing from a loose connection at a socket, junction box, or consumer unit
- Faulty appliance with a short circuit generating extreme heat
- Old or damaged wiring with deteriorated insulation causing a short circuit
- Incorrectly rated fuse or MCB failing to disconnect a fault in time
Is it dangerous?
This is a life-threatening emergency. Electrical fires can spread extremely quickly, produce toxic carbon monoxide and other fumes, and the electrical source may still be live. If you cannot safely disconnect the power and the fire is larger than a small appliance, evacuate immediately and call 999.
Can I fix it myself?
If the fire is very small (a smouldering plug or appliance) and you can safely unplug it or turn off the circuit at the consumer unit, do so. Use a CO2 or dry powder fire extinguisher — never use water on an electrical fire. If the fire is spreading, evacuating is more important than fighting it. Close doors behind you to slow the spread. Call 999 from outside.
When to call an electrician
After the fire brigade has attended and the property is declared safe, you will need a qualified electrician to inspect the entire electrical installation before the supply is restored. The electrician will need to carry out a full EICR (Electrical Installation Condition Report) and repair or replace any damaged wiring, sockets, and components.
What will an electrician do?
Carry out a full Electrical Installation Condition Report (EICR) on the property
Identify and isolate all fire-damaged circuits and components
Replace damaged wiring, sockets, switches, and consumer unit components
Test all circuits for insulation integrity and correct protective device operation
Issue certification confirming the installation is safe to energise
Liaise with the fire investigation team and insurers if required
Typical cost
£200 – £1000
Costs vary enormously depending on the extent of fire damage. A full EICR is £200–£350. Rewiring damaged areas can cost £500–£5,000+. Insurance may cover repair costs.
