Cooker Diversity...

[dimspark]

Just been to see a nice young lady who currently has a 6kw hob supplied via 6mm cable on 32 amp rcbo.
Her existing cooker is 2.5kw and is plugged into a standard 13 amp socket and wants to upgrade her oven to a 3.5kw oven. Could I wire the oven off the hob utilising the 32amp breaker taking into account diversity or is this bad practice?? Sorry if its a stupid question, im still learning!!

 

[Doomed]

My view is that these should be treated as two seperate fixed appliances and therefore should have thier own supplies.

 

[telectrix]

using diversity. your load is 21A if no socket outlet attached, so yes, you would be ok.

 

[dim_bulb]

think you add 5 amps if with a socket

 

[rick.oshea]

9.5kw total - 41A, after diversity = 22.3A (+5A if there is a cooker con unit with a socket on it) = 27.3A

6mm clipped direct will cope with 47A (as long as its not passing through fluffy 32A rcbo will look after the cable.

Use a cooker connection unit to have a point of isolation and 'your cooking with gas' as they say.... isolation point can control both as long as it is not more than 2 mtrs away.

If you have a copy of the 'electricians guide to the building regs' ( bit like the on site guide but green), P.55 & 56'

Graham

 

[Engineer54]

Nice bit of calculation going on here, but not really needed to be honest!! 32A MCB/RCBO sitting on 6mm has been proven good for upto 15KW of cooking load for around 50 years now!!!

Why anyone would want to bring 2 separate supplies in for these two cooking appliances is beyond me.

 

[rick.oshea]

Nice bit of calculation going on here, but not really needed to be honest!! 32A MCB/RCBO sitting on 6mm has been proven good for upto 15KW of cooking load for around 50 years now!!!

Why anyone would want to bring 2 separate supplies in for these two cooking appliances is beyond me.

Just trying to help his learning

 

[MarkieSparkie]

A single 32A, RCBO, 6mm[SUP]2[/SUP], final circuit to supply both appliances.

 

[dim_bulb]

if you take the 6mm into a socket for the oven as you say its on a plug and its fused to 13amp then

 

[Paul.M]

9.5kw total - 41A, after diversity = 22.3A (+5A if there is a cooker con unit with a socket on it) = 27.3A6mm clipped direct will cope with 47A (as long as its not passing through fluffy 32A rcbo will look after the cable.Use a cooker connection unit to have a point of isolation and 'your cooking with gas' as they say.... isolation point can control both as long as it is not more than 2 mtrs away.If you have a copy of the 'electricians guide to the building regs' ( bit like the on site guide but green), P.55 & 56'Graham

Rick top answer for the op which says he is still learning.