Electrical safety
Do not overload extension boards or adaptors
Connect only one extension unit or adaptor to each wall socket; use a separate fixed socket for high-power appliances.
Why it matters
Overloading or daisy-chaining extension units can overheat plugs, cables, and sockets, increasing electric-shock and fire risk.
Wrong action
Connecting one power strip to another or running several high-power appliances from the same extension unit.
Correct action
Use no more than one extension unit per wall socket and plug high-power appliances into separate fixed sockets.
What to do
- Unplug devices that are not needed.
- Never connect an extension unit to another extension or adaptor.
- Stop using any unit that is hot, loose, discoloured, or smells burnt.
If something happens
If an extension unit smokes or smells burnt, switch off the supply only if safe and move away. Call 999 if there is a fire.
Sources and review
- Electrical and Mechanical Services Department — Safety Tips on Extension Units and Adaptors
Source checked: 2026-08-19
This page provides general home-safety information and does not replace medical, legal, electrical, or other professional advice.
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