A burning smell from electrics is not normal, treat it as urgent.
Is this your problem?
A warm or slightly hot socket faceplate
A burning plastic or fishy smell that won’t go away
Smell stronger near a socket, switch, or appliance
Lights flickering or dimming at the same time
Power cutting out or your consumer unit tripping
What to do (safe, immediate checks)
1. Try to locate the general area (don’t touch yet)
Walk room to room and notice where the smell is strongest.
Do not sniff sockets closely or put your face near them.
2. Switch off at the consumer unit if unsure
If the smell is strong or you can’t pinpoint it, turn off the main switch on your fuse box.
This cuts power safely to the whole house.
3. Unplug appliances one at a time
If the smell seems linked to a room:
- Unplug everything in that area
- Wait a few minutes
- Plug items back in one by one (only if no smell after unplugging)
Common culprits: kettles, heaters, washing machines, extension leads.
4. Check sockets visually only
Look for:
- Brown or black marks
- Melted plastic
- Loose plugs sitting oddly
Do not remove the faceplate or open anything.
5. Feel for heat (carefully)
Using the back of your hand, gently check nearby walls or socket fronts.
If anything feels warm or hot — stop and switch power off.
6. Ventilate the area
Open windows. A lingering smell after power is off still needs checking.
When to stop immediately
Turn off power at the consumer unit and do nothing further if you notice:
- Burning smell getting stronger or spreading
- Repeated tripping when you restore power
- Buzzing, crackling, or faint sizzling sounds
- Visible smoke or melted plastic
- Exposed wires or damaged fittings
At that point, it’s no longer a “check it yourself” situation.
Why this happens (in plain terms)
- Overloaded sockets
Too many high-power devices on one outlet can overheat wiring behind the wall. - Faulty appliance
Internal components burn out, often gives that fishy/plastic smell. - Loose connection
Wires not tightly secured create heat over time (a very common hidden issue). - Ageing wiring or insulation
Older homes can develop breakdown in cable insulation, especially under load.
Important: your fuse box (consumer unit)
Your consumer unit is designed to protect you from fire and shock.
- If it trips once, something likely overloaded or faulted
- If it trips again after reset, there’s an ongoing fault, don’t keep resetting it
- If you ever smell burning from the unit itself, leave it off and call an electrician
What NOT to do
- Don’t ignore the smell hoping it will pass
- Don’t keep resetting breakers repeatedly
- Don’t open sockets, switches, or the fuse box
- Don’t continue using a suspected appliance
When to call an electrician
Call a qualified UK electrician if:
- You can’t clearly identify the source
- The smell returns after unplugging everything
- The consumer unit trips more than once
- There are any signs of heat damage