New Installation Q pt3 (Shower)

[GaryinAshby]

Last question, honest.

Side storey single extension incorporating a bathroom that is to be fitted with an 8.5Kw Triton shower.

To save ripping up the flooring and trying to run 10mm T+E round all of the other services under there, we suggested that it be run OUTSIDE the house. Nowhere near as bad as it sounds as this will be down the side of the house (where it can hardly be seen) and in plastic conduit (not the clip-on stuff).

The total cable run from CU to shower will be 26 feet. A new CU is to be fitted. One electrician (the one who came recommended by others) has said that 6mm T+E will be fine.

I realise that there are many factors to be considered for cable size, but I understood that a rule-of-thumb was anything over 8Kw should be 10mm. Obviously I don't want to start questioning a pro, but I'd like to feel comfortable about what I don't understand (hence my two previous posts!).

Again, thanks for any feedback, it is both usefull and appreciated.

 

[adwt2004]

That cables rated for 40amps i think. What if you upgrade the shower to a more powerful one? TBH I'd always run a shower radial in 10mm to give you upgrade possibilities.

 

[brainwasher]

To future proof your installation I would fit 10mm T+E, you may want to fit a 9.5kw or 10.5kw electric shower in the future?

 

[GaryinAshby]

I will do. I can't see the point in fitting 6mm just save a few pounds & make it easier to route.

Thanks

 

[Taylortwocities]

Good luck running 10mm in plastic conduit. Have you thought about what diameter you'll need - don't forget about spacing requirements.

Personally, i'd run 10mm SWA outside.