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Cable Diversity for Induction Hob

Former Community Member
Former Community Member
Hi all,


I have been tasked with wiring an induction hob, and I’m fairly new to install work on my own having just qualified myself and venturing out on my own. 


The Hob is rated at 7.35kW.

In my head, and applying the cable diversity factors-

7350w divided by 230v =31.95amps.

Take off the first 10amps =21.95amps

21.95x30% = 6.58amps

6.58amps+10amps =16.58amps Total.


Plus 5amps if there is a 13amp socket involved, which there isn’t in this case.


so with that in mind, I’d be fine wiring the circuit with reference method C (clipped direct) in 2.5mm T+E right??! Although saying that, my thoughts are to wire using 6mm T+E just in case future appliances vary! 

does this seem logical or should I just keep it as a 2.5mm circuit on a 20amp MCB.


any advice would be greatly appreciated. Let me know your thoughts?
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  • 0
    No you don't apply diversity to single loads, you apply it to distribution circuits and whole installations.


    The circuit protection and cable CSA should meet the demands of the plated current and/or the manufactures specifications in their data sheet.


    Of course you can put it on a bit of 1.5mm T&E with a 10A MCB if you like and it will probably be OK for most of the time but then you are not complying with the manufactures instructions see Regulation 134.1.1.


    JP


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  • 0
    No you don't apply diversity to single loads, you apply it to distribution circuits and whole installations.


    The circuit protection and cable CSA should meet the demands of the plated current and/or the manufactures specifications in their data sheet.


    Of course you can put it on a bit of 1.5mm T&E with a 10A MCB if you like and it will probably be OK for most of the time but then you are not complying with the manufactures instructions see Regulation 134.1.1.


    JP


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