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Oven choice: on the ring circuit or share radial with induction hob?

MB_1

Hi all, I hope I'm asking this in the right place. I know variations of this have been asked before, but it's very confusing!

I will be getting a 32a induction hob and a 13a oven.

The current cooker radial is 6mm cable, with a 32a mcb.

As I understand it, it might be possible to put the oven and the hob on the same radial, if you use a diversity calculation. However, not everyone agrees that diversity should be applied to induction hobs, since they can draw their full load from just two rings at once. So, it might be possible but not ideal.

Similarly, I think I could have the oven on the sockets ring, which serves the kitchen and a bedroom. That would be shared with a dryer, washing machine, kettle, toaster, microwave, coffee machine, monitor, laptop. So, probably not ideal either.

Of the two options, which would you recommend? (Rewire is not a great option due to distance from the board, and concrete floors.)

Thanks for any advice you can give - I won't be doing it myself, but just want to know my best option before asking the electrician.

Parents
  • 0

    What do the manufacturers' instructions say?

    It may be a bit late now, but if the supply is limited to 32 A, why buy such a powerful hob?

Reply
  • 0

    What do the manufacturers' instructions say?

    It may be a bit late now, but if the supply is limited to 32 A, why buy such a powerful hob?

Children
  • 0 in reply to Chris Pearson

    Hi Chris. They don't say a lot!

    https://www.bosch-home.co.uk/product-list/cooking-baking/hobs/induction-hobs/PIE631BB5E

    Maybe I just don't know what I'm looking for, but it seems clear that the hob needs a 32a supply. But would you expect the instructions to tell you if it can share that supply with another appliance?

    Two reasons for wanting a powerful hob really - wife is keen not to lose the power she had when cooking with gas, plus the kitchen company only had a choice of 32a or 13a and the latter doesn't look up to much. 

  • 0 in reply to MB_1

    Thank you for that. As I read it, a 16 A supply is sufficient. Under "installation": "Power management options for 16A, 13A or 10A connection: limit the maximum power if needed (depends on fuse protection of electric installation)."

    That would appear to take account of diversity. If you really were drawing 7.3 kW for any length of time, your kitchen would get pretty hot, unless it is very poorly insulated.

    I'd put the cooker appliances on the same radial.

  • 0 in reply to Chris Pearson

    Thank you for looking. Just looking at the power management options myself. So it would appear that I can limit the maximum power in the settings. It appears I can go up in increments of 500w, so I could set it to 5000w to keep the total max load under 32a (oven says 13a but it's only 2kw).

    I suppose that undermines the point of getting a powerful hob, so I think I'll leave it on full power, see if diversity let's me get away with it, and reduce the max powerful if I get tripping?

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