Sockets and extension cables
Overloaded sockets and extension cables are a common cause of house fires. Plugging too many devices into one power point can lead to overheating, damaged appliances, and increased fire risk.
How to use sockets and extension cables safely
- Use only one plug per socket for high-powered items like kettles, air fryers, or heaters.
- Avoid overloading extension leads – check the total wattage doesn’t exceed the maximum rating (usually 13 amps or 3,000 watts).
- Never “daisy-chain” extension leads – plugging one into another multiplies the risk of overheating.
- Use a surge-protected extension lead for extra safety, especially with electronics.
- Unplug items when not in use – especially overnight or when leaving the house.
Know your limits
Every plug socket can safely handle up to 13 amps. Common examples:
- Kettle – 13 amps
- Toaster – 9 amps
- Microwave – 7–10 amps
- Phone charger – less than 1 amp
- Laptop – 2–3 amps
Using multiple high-powered devices on the same socket or extension lead can cause it to overheat or trip the circuit.
Tips for using extension cables safely
- Use short extension leads where possible – long or coiled leads can build up heat.
- Fully unwind cable reels before use to prevent overheating.
- Keep cables away from water, sinks, and cookers.
- Don’t cover extension leads with rugs or furniture – this can trap heat and damage the cable.
Warning signs to watch for
- Plugs or sockets that feel hot
- Scorch marks or buzzing sounds
- Frequent tripping of fuses or circuit breakers
- A smell of burning plastic
If you notice any of these, stop using the socket or lead immediately and have it checked by a qualified electrician.
Stay protected
- Keep a working smoke alarm on every level of your home, and install a carbon monoxide alarm in every room with a fuel-burning appliance, such as a boiler, wood burner, or open fire.
- Test your alarms regularly.
- Have an escape plan and make sure everyone in the household knows it.
- If a fire does start, get out, stay out, and call 999.
- For more information visit Staffordshire Fire & Rescue Service's safety at home section, or Fire Kills