6mm t&e electric oven and dryer on single supply

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The 13A limited hobs can limit your cooking somewhat though, so as its a sounds like a kitchen refit, it would be madness IMHO to limit to one of those. I'd personally play it safe, I think I'd seek to get a 10mm feed into the island, then fit a small board in the back of a unit and then appropiate MCBs for the appliances you plan to fit.

Yes, you might get away with 6mm on a 32A, but you might also end up with it tripping off lots if you are using everything at once, For what it costs in cable you'd be best off over specing than risking having to pull things apart later, Winston is sure to tell you that it is a waste though
 
I think you would only get tripping, it would be when all 3 hobs are on full power and the dryer going.

If you insist on adding a cable, a second 6mm would be the way to go
 
Yes, you might get away with 6mm on a 32A,
What does that mean?

4mm² is adequate for 32A - method C - not 'getting away' with anything.
If it's 6mm² method C, then he can have 40A or 45A MCB.

Design the circuit properly in the normal way.
 
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The 13A limited hobs can limit your cooking somewhat though, so as its a sounds like a kitchen refit, it would be madness IMHO to limit to one of those. I'd personally play it safe, I think I'd seek to get a 10mm feed into the island, then fit a small board in the back of a unit and then appropiate MCBs for the appliances you plan to fit.

Yes, you might get away with 6mm on a 32A, but you might also end up with it tripping off lots if you are using everything at once, For what it costs in cable you'd be best off over specing than risking having to pull things apart later, Winston is sure to tell you that it is a waste though

Often a whole house is fed with 10mm cable!

On a 32a MCB only 4mm is required as I said. As the OP already has 6mm he may as well use that.
 
But 32A may not be big enough.....

I know that you have never undertaken cable calculations. You might like to read this handy guide.

You will quickly see that the FIRST step is to determine the design current. This is known as Ib
Unless you know that, you cannot decide on the protective device In
And, having applied certain other factors determine the size of the cable.

So........and I'll ask again....... need to know the spec of everything thats going to be attached.
Anything else is just guesswork and speculation.
 
But 32A may not be big enough.....

I know that you have never undertaken cable calculations. You might like to read this handy guide.

You will quickly see that the FIRST step is to determine the design current. This is known as Ib
Unless you know that, you cannot decide on the protective device In
And, having applied certain other factors determine the size of the cable.

So........and I'll ask again....... need to know the spec of everything thats going to be attached.
Anything else is just guesswork and speculation.
That guide would make a good sticky, if anyone knows how to do it.
 
That guide would make a good sticky, if anyone knows how to do it.
Well … it’s what any self respecting electrician was taught for their 236 qualification.
but of course, it’s all been dumbed down now. Just get your 18th, pay your £600 and you can rewire someone’s granny’s house. Good grief.
 
I meant if anyone knows how to create a sticky. Probably easier than I imagine.]

There does seem to be a lot of reliance on 'cable calculator' these days I've noticed at work, though better than nothing I suppose.

Absolutely no maths in my 18th, unbelievable. That's all it was back in the day.
 

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