Max shower on 6mm cable

[exlabman]

Hi,
My shower is pants (magicoal), I wanted to replace it but have found the feed is only 6mm, although it does go to it's own fuse/trip switch.
The existing shower is a 8.5Kw, so I would have thought same again would be fine but other posts on here now suggest I would need a 10mm cable which I'd rather avoid as it means expensive inspections.

What is the best shower I can get with a 6mm feed?

Cheers
David

 

[Taylortwocities]

[yawn] What is the value of the CPD on the shower circuit? [/yawn]

and

re:

it does go to it's own fuse/trip switch.

How else could it be connected? Sharing the lighting circuuit, maybe?

 

[exlabman]

How else could it be connected? Sharing the lighting circuuit, maybe?

Well in this house of horrors, quite possibly. If the garage is anything to go by I wouldn't have been suprised to see it connected up to the nearest lamp post.
I was pointing out it was at least correctly connected, thanks for your most helpful comment.

 

[Aragorn84]

You didnt answer the important bit in Taylors post.

What is the rating of the fuse/MCB that its connected to?

Also, how is the cable routed?

 

[riveralt]

You will need to check out the Manufacturers instructions but 6mm T&E clipped direct and without any derating factors has a current carrying capacity of 47 Amps.
8.5kw shower draws 36Amps.
So you will need a 40Amp MCB and RCD protection for any replacement shower in 8.5kw range.

However, if you do have a house of horrors better get it checked first by an electrician.

 

[ban-all-sheds]

6mm T&E clipped direct and without any derating factors has a current carrying capacity of 47 Amps.

exlabman - FYI - read all of Chapter 4.3 for more information related to that.