Burning smell from electrical equipment: what to do
If you notice a burning smell from electrical equipment, act quickly. It could indicate overheating, damaged components or a serious electrical fault. Find out what to do, what not to do, and when to call a qualified electrician for help.
What should I do about an electrical burning smell?
A burning smell from electrical equipment can indicate overheating insulation, a loose connection, a damaged plug, an overloaded accessory or an appliance fault. Stop using the suspected equipment and isolate it only if this can be done safely. Keep people away. For smoke, flames or immediate danger, leave the property and call 999.
Warning signs
A burning smell from electrical equipment should never be ignored.
Look out for these common warning signs:
A strong, persistent burning or plastic smell
Visible smoke, sparks or melted plastic
Discolouration around plug sockets, switches or cables
Equipment that sounds unusual (buzzing or cracking)
Warm or hot sockets, switches or equipment
Circuit breakers that trip repeatedly
What the smell may mean
A burning smell from electrical equipment is usually a sign that electrical components are overheating. This can be caused by loose connections, excessive load, failed components or damaged wiring. While it doesn't always mean an immediate danger, it should never be ignored.
Expert advice
A burning smell is your early warning system. Even if the equipment still works, it often indicates heat build-up, which can quickly lead to failure or fire. It's always best to have the cause checked by a qualified electrician.
Mark EllisonSenior Electrical Engineer, TRACEFORM
Do not search for the smell at close range
It can be tempting to follow the smell to find the source, but this can be dangerous. Opening covers, removing panels or touching the equipment could expose you to live parts, burns or toxic fumes. Even if the equipment seems to be working, internal damage may have already occurred.
Look only from a safe distance for smoke, discolouration, melting or a breaker that has tripped. A burning smell from a plug socket, extension lead or fuse box is often strongest near a loose or overloaded connection, but the actual fault can be hidden inside a wall, ceiling or appliance, so the smell alone cannot tell you where the problem is.
Keep a safe distance, switch off at the socket if it's safe, and call a qualified electrician.
Damage can be hidden from view
Why cooling down is not enough
A burning smell is often caused by overheating, but simply letting the equipment cool down does not make it safe. The damage may already be done, and internal components can remain compromised even if the smell disappears. Using the equipment again could lead to a more serious fault, electric shock or a fire.
Heat that comes and goes usually means the fault is load-related: a loose terminal, a worn plug top or an overloaded circuit heats up each time demand rises, then cools when it stops. Each cycle degrades insulation a little further. That is why an electrical burning smell that has gone away still needs a proper inspection and test before the socket, appliance or circuit is used again.
Electrical faults can worsen over time. What seems like a minor issue today could lead to a serious incident tomorrow.
Stop reading and call us
If you notice a burning smell from any electrical equipment, don't take the risk. Our qualified and insured electricians are available 24/7 to help. We'll assess the situation, make it safe, and advise on any necessary repairs or replacements.
We cover Manchester, Bolton, Salford, Bury, Rochdale, Oldham, Stockport, Tameside, Trafford and Wigan with an emergency response typically under 60 minutes. Callout pricing is explained before we attend, and there are no hidden costs.
A burning smell can come from different parts of your electrical system. Here are the most common causes and what they may indicate.
Loose socket terminalsLoose or damaged connections can create resistance, causing heat build-up and a distinct burning smell around the socket.
Overloaded extension leadsRunning too many high-power devices from an extension lead can cause overheating, especially if the lead is low quality or coiled up.
Failing appliancesA burning smell from an appliance such as a kettle, oven or tumble dryer may indicate a faulty heating element, motor or internal wiring.
Consumer unit issuesA burning smell near your fuse box or consumer unit can indicate loose connections, overloaded circuits or a failing MCB, which require immediate professional inspection.
Overheated or damaged wiringHidden wiring faults, damaged insulation or cables running close to heat sources can cause overheating within walls or ceilings. This may produce a burning smell even if there are no visible signs.
Key facts
Electrical Safety First lists burn marks, arcing sounds, hot plugs or sockets and damaged leads among warning signs that need attention.
Important safety noticeIf you notice a burning smell, switch off the equipment at the socket if it is safe to do so, and keep people away. Do not try to investigate the source yourself.
When it is an emergency
If you can see smoke, sparks or melted plastic, switch off the equipment at the socket or consumer unit immediately, keep everyone away and call a qualified electrician straight away.
Visible smoke or sparks
Strong or persistent smell
Signs of burning or melting
Repeated tripping
Get professional help ASAP
Common causes
Common causes behind an electrical burning smell
A burning smell can come from a range of electrical issues, from simple overloads to serious faults inside your consumer unit. Understanding the common causes can help you identify the risk and know when to call a qualified electrician.
Overloaded socketToo many devices drawing power can overheat the socket and wiring.
Damaged plug topCracked or burnt plug tops can overheat and give off a burning smell.
Burnt consumer unit componentA faulty breaker or loose connection can overheat inside the consumer unit.
Loose wiringLoose connections can create resistance, heat and a burning smell over time.
Faulty appliance motorWorn or failing motors can overheat and give off a burning smell, especially in older appliances.
Hot extension leadExtension leads can overheat when used with high-power devices or for long periods.
Immediate actions
Immediate steps to take if you smell burning from an electrical socket
If you suspect a burning smell from an electrical socket or appliance, act straight away. Follow these steps to keep yourself and others safe while you arrange for a qualified electrician to inspect the problem.
1Stop the suspected equipment safelyTurn off the socket at the wall and, if possible, at the consumer unit (fuse box). Only do this if it's safe to approach.
2Clear the overheated areaMove everyone, especially children and pets, away from the area to reduce the risk of injury.
3Keep liquids away from the faultNever use water to try to cool or extinguish an electrical fire. It can make the situation much more dangerous.
4Escalate smoke, flames or heatContact a NICEIC registered electrician to inspect the socket and identify the cause before it is used again.
Act quickly to stay safeA burning smell is a warning sign of a serious electrical fault.
Do not do thisDanger
Do not use water on the socket or plug
Do not continue to use the socket or appliance
Do not try to dismantle or repair it yourself
Do not ignore the smell, even if it disappears
Ignoring the problem can lead to electric shock, fire or serious injury.
Evidence to noteHelpful
If it's safe to do so, make a note of the following information before calling an electrician:
Get it checked by a professionalA qualified, NICEIC registered electrician can identify the cause and make sure your home is safe.Request a callback
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This guide has been written and reviewed by qualified electricians with real-world experience. We follow current UK electrical safety standards and NHS and government guidance to give you clear, practical advice you can trust.
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Reviewed by
Dan Whitaker
Senior Electrician & Technical Reviewer
Qualified & insured18th Edition, public liability cover
10+ years' experienceDomestic & commercial, Greater Manchester
“A burning or fishy smell near electrical equipment means something is overheating. Switch off, do not open the enclosure, and let us find the hot joint with the cover removed and the circuit tested.”
Dan Whitaker
Last updated
10 Sept 2026
Reviewed against BS 7671 termination requirements and fire and rescue service guidance on electrical fire warning signs.
Covering Greater Manchester
Fast, local electricians across Greater Manchester
We provide 24/7 emergency electrical support throughout Manchester and surrounding areas, with local engineers ready to help.
“There was a fishy, hot-plastic smell in the hallway that got stronger near the consumer unit. I turned the main switch off and called TRACEFORM around 8pm. The engineer arrived in under an hour, took the cover off and found a loose neutral on the cooker circuit that had melted the terminal and browned the busbar. He replaced the damaged breaker and neutral bar, thermal-checked the rest of the board and explained how close it had come to a fire. I'm very glad I didn't leave it until morning.”
Sarah M, Sale – Verified customer
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A Sale homeowner who followed the burning-smell advice and avoided a consumer-unit fire.
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Here are answers to common questions about burning smells from electrical equipment. If you're still unsure, get in touch and we'll be happy to help.
Should I call 999 for an electrical burning smell without flames?
It usually means something is overheating. Common sources are a loose or damaged connection in a socket or plug, an overloaded extension lead, a failing appliance motor or heating element, or a hot breaker or terminal inside the consumer unit. Because the smell can travel, the source is not always where the smell is strongest, so treat it as a warning sign and have it inspected by a qualified electrician.
Can an electrical burning smell come from a consumer unit?
No. The smell stopping usually means the load has dropped and the fault has cooled, not that it has gone away. Damaged insulation, pitted contacts or a loose terminal remain and will heat up again the next time the equipment is used. Keep the socket or appliance out of use until it has been inspected and tested.
Is it safe to reuse equipment after an electrical burning smell fades?
Yes. Dust burning off a heater used for the first time in months, a new appliance curing on first use, or food debris on a hob or in a toaster can all produce a short-lived burning smell. If the smell is strong, persistent, plastic-like or fishy, or if it is near a socket, cable or the fuse box, assume it is electrical until a qualified electrician has checked it.
Which details help locate an electrical burning smell?
If it is safe to do so, switch off at the socket and unplug the appliance, and if the smell is near the consumer unit or you cannot identify the source, turn off the main switch. Never touch a plug, socket or cable that is hot, melted or discoloured, and never use water. If you can see smoke, sparks or flames, leave the property and call 999.
May I unplug an appliance that has an electrical burning smell?
Yes. TRACEFORM provides 24/7 emergency electricians across Manchester, Bolton and Greater Manchester, with a typical response of under 60 minutes. Call us or message on WhatsApp with your postcode and what you can smell and we will dispatch a qualified, NICEIC registered electrician to find the cause and make it safe.
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Reviewed by Dan Whitaker, Senior Electrician & Technical Reviewer · Last reviewed
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