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The Truth About Extension Leads — How Much Is Too Much?

The Truth About Extension Leads — How Much Is Too Much?

What an Extension Lead Can Actually Handle

 

 

  • Most extension leads are rated for 13 amps maximum

  • That’s roughly 3000 watts in total

  • A single hairdryer can use up to 2000 watts

 

 

So yes — even one “small” extension block can become overloaded very easily.

 


 

 

Warning Signs You’re Overloading a Socket

 

 

Look out for the following:

 

  • The plug feels hot

  • The extension cable becomes warm

  • Lights flicker when you switch something on

  • You’ve gathered more plugs in one spot than any socket was designed for

 

 

These are early indicators of a serious electrical fire risk.

 


 

 

Safer Alternatives

 

 

To avoid overloading your sockets, consider:

 

  • Installing additional wall sockets

  • Using a high-quality surge-protected power bar

  • Spreading appliances across different circuits

 

 

Overloading isn’t just “a bit dodgy” — it’s one of the main causes of household electrical fires, especially in December.

 

 

If you want your home set up safely this winter, get in touch with us today for professional advice and electrical solutions. 

Kate Scully

03.12.2025

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