Power Point Installation · Mascot
Complete lighting installation, power supply and outlet setup, data cabling and switchboard upgrade.
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Burning Smell From Switchboard
What does a burning smell from the switchboard mean?
A burning smell near a switchboard usually means a connection, breaker or component is overheating, which can lead to fire if left unaddressed. Switch off power at the main switch if it's safe to do so, leave the area, and call an electrician immediately. If you see flames or smoke, leave the property and call 000.
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A burning or hot plastic smell coming from your switchboard is one of the more serious electrical warning signs a household can encounter, because the switchboard carries all the power entering your home. This page explains what typically causes it, what to do immediately, and when the situation calls for emergency services rather than an electrician.
This isn't a fault to leave until a convenient time. Overheating at a switchboard can progress quickly, and the safest response is to reduce risk immediately and get a licensed electrician to assess it as an emergency.
01 / Detail
What causes a switchboard to smell like it's burning
Switchboards contain circuit breakers, fuses, wiring connections and sometimes older components like ceramic fuses, ceramic fuse holders or ageing rewireable fuses. A burning smell typically means one of these components is running hotter than it should, often because a connection has loosened over time, a breaker is failing, or a circuit is being overloaded beyond what the wiring or breaker is rated for.
Older switchboards, especially those with fuse-based protection rather than modern circuit breakers, are more prone to this kind of overheating because components degrade and connections can work loose. Water ingress, pest damage, and general age can all contribute as well.
02 / Detail
Immediate steps if you smell burning
If it's safe to reach the main switch without touching the switchboard itself, turn off the power at the main switch. This isolates the whole property and removes the immediate source of heat while you arrange for someone to look at it.
Do not attempt to open the switchboard, touch any components, or investigate further yourself. Switchboards carry incoming mains power and any work on them is licensed electrical work.
- If you see flames, smoke, or sparking, leave the property immediately and call 000
- If it's just a smell with no visible flame or smoke, switch off the main switch if safely accessible
- Keep children and pets away from the switchboard area
- Do not attempt to reset breakers or investigate the switchboard yourself
- Call a licensed electrician as an emergency once the immediate area is safe
03 / Detail
When it's an emergency versus when it can wait for a booking
Any visible flame, smoke, sparking or a switchboard that is warm or hot to the touch from a distance is an emergency. Leave the property if there's any smoke or fire and call 000 first, then arrange an electrician once the fire service has confirmed it's safe.
A faint burning or hot plastic smell with no visible smoke or flame still needs urgent attention, ideally same-day, because the underlying cause won't resolve on its own and tends to get worse with continued use.
04 / Detail
What an electrician checks
A licensed electrician attending a burning smell at a switchboard will isolate power safely, inspect the board for scorching, loose connections, damaged breakers or fuses, and signs of overheating on individual circuits. They'll identify which component or connection is responsible before restoring power.
In some cases, the fix is replacing a single faulty breaker or tightening a loose connection. In others, particularly with older fuse-based switchboards, the electrician may recommend upgrading the switchboard to modern circuit breakers and safety switches, since fuse boards are more prone to this kind of fault and offer less protection.
05 / Detail
Preventing it happening again
Switchboards that have already overheated once are worth having properly assessed rather than just repaired at the single point of failure, since heat damage can affect nearby components too. An electrician can advise whether the board needs a full upgrade or whether the repair addresses the issue.
Avoiding overloading circuits, particularly with high-draw appliances like heaters and air conditioners on older wiring, reduces the chance of this happening again. A periodic inspection can also pick up early signs of a loose connection before it becomes a heat or fire risk.
Frequently Asked Questions
Related questions, answered.
Is a burning smell from a switchboard always an emergency?
Treat it as urgent in every case. If there's visible smoke, flame or sparking, it's an emergency and you should call 000. If it's just a smell, isolate power if safe and call an electrician immediately.
Can I turn the power back on after the smell goes away?
No. The smell going away doesn't mean the fault has resolved. Leave power off at the main switch until a licensed electrician has inspected the board.
Why do older switchboards overheat more often?
Older boards often use ceramic fuses or ageing breakers that degrade over time, and connections can loosen with age. Modern circuit breakers and safety switches are generally more reliable and offer better protection.
Does home insurance cover switchboard fire damage?
Insurance policies vary and this is a question for your insurer, but keeping switchboards properly maintained and addressing warning signs like burning smells promptly is generally expected.
How often should a switchboard be inspected?
There's no fixed rule, but older boards, boards that have had a fault before, or boards in homes preparing to sell or rent are worth having checked by a licensed electrician periodically.
Can an overloaded circuit cause a burning smell without a fault?
Yes, drawing more current than a circuit or breaker is rated for can cause heat build-up even without an existing fault, which is why high-draw appliances should be spread across circuits appropriately.
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Comprehensive electrical capabilities.
Residential, commercial and specialised electrical work, planned around the property and completed with close attention to safety and finish.
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Modern circuit protection and switchboard work.
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Methodical diagnosis for electrical faults and outages.
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Indoor, outdoor and architectural lighting work.
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Talk to an Electrician
Smelling burning near your switchboard?
If there's smoke or fire, call 000 first. For everything else, our licensed electricians can respond urgently to inspect and repair the fault.