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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
    Presumably this is a new circuit, so just keep it simple and use 4 mm² cable on a 32 A MCB.


    Whether an RCBO can be placed in the existing CU is another matter entirely. If the cable is clipped direct and no plug and socket are involved, do you need additional protection?


    As for diversity, this appliance is not a whole cooker, so perhaps OSG is a little out of date?
Reply
  • 0
    Presumably this is a new circuit, so just keep it simple and use 4 mm² cable on a 32 A MCB.


    Whether an RCBO can be placed in the existing CU is another matter entirely. If the cable is clipped direct and no plug and socket are involved, do you need additional protection?


    As for diversity, this appliance is not a whole cooker, so perhaps OSG is a little out of date?
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