18th edition and the requirement to upgrade consumer units when electric hobs are replaced | on ElectriciansForums

Discuss 18th edition and the requirement to upgrade consumer units when electric hobs are replaced in the UK Electrical Forum area at ElectriciansForums.net

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Good morning

does anyone know about anything in the 18th edition and the requirement to upgrade consumer units when electric hobs are replaced?

i had a customer ask me about it this morning.

Many thanks
Simon
 
Hi Simon and Welcome to the Forum :) .
No changes to fixed wiring are required by BS7671 when appliances are replaced. However, the detail here is the new cooker’s manufacturer may state something in their installation instructions that needs to be considered.
 
They might be confused regards the fitting of RCD’s when adding to circuits.
 
I am going to replace a consumer unit this afternoon thanks to an induction hob being installed..
The extra earth leakage on the installation from the hob causing the RCD incomer to trip..
So they may be recommending a cu change based on this kind of scenario
 
I am going to replace a consumer unit this afternoon thanks to an induction hob being installed..
The extra earth leakage on the installation from the hob causing the RCD incomer to trip..
So they may be recommending a cu change based on this kind of scenario

So what’s going to stop the hob tripping it’s circuit Rcbo after the CU change?
 

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