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Discuss Cooker supply 12kw correct cable size in the Electrical Forum area at ElectriciansForums.net

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Adamk

EF Member
Hey guys

I’ve run a 6mm for a cooker, runs about 10metres. The customers has changed her mind on the cooker and gone for a 12kw range. Went back today to finish off and saw this lovely surprise. I know you have to take diversity into account. But for my peace of mind. Would 6mm 32a MCB be fine?

Kind of panicking a bit as the jobs finished.

What you think? Please dont tell me to tell her to change it as that’s not really an option :( Thanks
 

telectrix

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nothing wrong with 6mm on a 32A unless the cable is covered in >100mm of insulation.
 

Adamk

EF Member
Well the things is that it’s inside a 25mm conduit under some screed for about 5metres... rest of it’s under the floors boards so got
Plenty of air. Thoughts?
 

telectrix

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Murdoch

Electrician's Arms
Top tip from me - get your client to define PRECISELY which model that they want to buy before 1st fix and explain why you need this ......... then they think twice about changing their minds...
 

Adamk

EF Member
Top tip from me - get your client to define PRECISELY which model that they want to buy before 1st fix and explain why you need this ......... then they think twice about changing their minds...
Yes this is the 1st time this has happened after many many kitchen jobs. Howdens muck up the kitchen layout and they had more space where the cooker was going to go, so they
Thought they would go for a wider and more powerful as they had more space....
Not ideal
 

mattg4321

Electrician's Arms
Never come across a domestic cooker yet that needs a bigger supply than 32A.

Always use diversity. Fitted cookers up to 14kw total load and never had a problem yet.
 

Taylortwocities

Electrician's Arms
CCTV / Alarms
After diversity the estimated demand is till only 22ampsish. It'll be fine on 6mm/32A. Dont go there for Xmas lunch, just in case:p
 

Murdoch

Electrician's Arms
Our 17.7 kw Rangemaster is on 10mm but the OEM said 6mm would be good enough1
 

123

Electrician's Arms
What you have should be more than fine, On Site Guide suggests a 15kW Cooker is fine on a 32A MCB and 6mm Cable.

When customers change their mind it can be a PITA, had it before where it was a gas hob all the way so just a simple spur off the ring, got there to finish the job and no gas hob there, a blooming ceramic touch control electric one instead:rage:
 
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