Electrical safety
Do not exceed a lamp holder's wattage rating
Fit only the permitted bulb type within the lamp holder's maximum wattage. If the rating cannot be read, ask for a suitable replacement to be confirmed.
Last reviewed: 2026-09-20
Why it matters
A bulb exceeding the fitting's rating can overheat the holder even if its base fits.
Wrong action
Choosing a higher-wattage bulb based only on matching the screw base.
Correct action
Fit only the permitted bulb type within the lamp holder's maximum wattage.
What to do
- Switch off and let the fitting cool before checking its bulb rating.
- Fit only the permitted bulb type within the lamp holder's maximum wattage.
- If the rating cannot be read, ask for a suitable replacement to be confirmed.
If something happens
For serious injury, unconsciousness or difficulty breathing, keep yourself safe, call 999 and follow the operator.
Sources and review
- Electrical and Mechanical Services Department — EMSD: Household Electrical Safety Handbook sections 2.3.1-2.3.7
Last reviewed: 2026-09-20
This page provides general home-safety information and does not replace medical, legal, electrical, or other professional advice.