instant hot water

[rmaynard]

can these be on a ring main circuit or do they have to be supplied independantly?

 

[WPD Lad]

What kw rating is it?

 

[rmaynard]

3 I think, iv not seen them yet


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[gnselectricals]

I had one last week which was 9.5kw , tiny little thing, could hardly get a 4mm flex into it


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[Megavolt]

Can't see it being instant if it's only 3kw

 

[telectrix]

hand washer?

 

[Megavolt]

Fair point never thought of them

 

[mhar]

Over 3kW on a separate circuit or do you mean a ring with a number of these on it?

 

[rmaynard]

sorry yes hand washer. it would be a ring with 3 on

 

[telectrix]

so, 3 @ 3kw each =40A. have to be a 4mm RFC on a 50A MCB. assuming derating factors don't rule 4mm out.

 

[Silly Sausage]

sorry yes hand washer. it would be a ring with 3 on

Is this some kind of washroom or the like?
With diversity (see App 1 OSG) you're looking @ 30A.
I think I'd put them on their own Radial.