Advice re oven and hob wiring

[Midwest]

Just add, when checking the maximum load for a new induction hob for a client, the brochure mentioned 'zoning' of the heating rings. It would appear this particular hob is able to run two rings together. Why, I have no idea! The manufacture, Neff gave slightly higher ratings, than the normal diversity calculous would normally give.

 

[Randy Addae Jnr]

My reasons was that the Oven pulls a lot of current and because of that, it should have its own MCB which will control only the Oven to prevent overload.

 

[telectrix]

domestic ovens do NOT generally pull high current. in fact, most come fitted with a 13A plug top these days.

 

[john Stevens]

Thanks again for all your posts. My particular oven is 4.1kw, the induction hob (AEG) is 7.4kw, 32 amp in its own right.

At the moment, and having tested with all jobs in full power and both ovens on full heat, the board had not tripped.

My primary concern of course is safety. It’s seem that their is a split opinion on if there should be a separate cable required.

Talking to another electrician earlier he could not understand the theory diversity. He had a black and white view of if your hob is 32amp and your board breaker/fuse is 32amp how can this be right?

You have probably gathered, I have no idea about electrics so pur my faith in those who have this trade craft and expertise.

 

[telectrix]

cooker diversity works like this:
say your total rating comes to 40A.
load (A) = 10A + 1/3 of remainder
i.e 10 + 10 = 20A (+5A if cooker isolator incorporates a 13A socket).

this is due to the fact that, even if all elements are switched on, each will be cycling on/off at different times.

 

[john Stevens]

Right, thank you. So in my case both my combined appliances, oven and hob equates to 11500kw. Taking that into account and factoring in that 6mm is in use makes the 32amp rcd prictected board breaker/fuse suitable?

 

[john Stevens]

Right, thank you. So in my case both my combined appliances, oven and hob equates to 11500kw. Taking that into account and factoring in that 6mm is in use makes the 32amp rcd prictected board breaker/fuse suitable?

 

[telectrix]

i hope you meant 11500watts, not 11500kW. .
in which case, it's 10A + 13A = 23A design current. ( add 5A if a socket is on the isolator ).

 

[Spoon]

i hope you meant 11500watts, not 11500kW. .

It's a super fast cooker if it's 11500kW

 

[pirate]

...or a small nuclear reactor, with rings?