What size cable do i need to get for a 9.5kw, shower from the mains?

Question

What size cable do i need to get for a 9.5kw, shower from the mains?

Answer 1

10mm My Husband says depends on the length of the run from mains to shower

Answer 2

With respect - if you have to ask should you be doing it?

Answer 3

I have same Kw shower. I used 10mm twin core and earth. But I got a sparky in to check my wiring and wire it to the consumer unit......I won't touch them. Previous bloke said should u be fitting it if u have to ask and i would have to agree with him. It won't cost the much if you feed all the cables so all the sparky has to do is connect to shower/switch and consumer unit when all wiring is in place.

One previous replyer mentioned it loses power over distance and it does so the bigger the better.

Answer 4

Absolute Minimum of 10mm,

16mm if through insulation/ long way from unit/ with other circuits...

Answer 5

10mm twin and earth

Answer 6

It is now LAW in the UK, on new wiring for electric showers for the wiring to be 10mm, and that can take up to a 10.5kw shower

Answer 7

10mm twin and earth.