shower block- new three phase supply

[Johnmillington]

Hi. I'm a new user to this forum, and would appreciate if you could help me out on this one.

i need to price a job on a new shower block. Customer has just had new three phase supply. Shower block is 100metres away from DNO cut out.

I was thinking of


4 pole 300ma TD RCD in an insulated enclosure
100A metal fused switch disconnector TP&N
100m of 25mm 4 core SWA cable
square d 3 phase db with 125a main switch

Can anyone suggest a good, spacious Insulated rcd enclosure?! Also, does anyone see any problems with this setup!?

Thanks for your help

 

[BlueToBits]

You may need to consider several other factors as well. Volt drop and earthing system(s) and bonding comes to mind first. Then location of distribution, final circuit protection. Isolation, cable route, zoning, installation methods, demand, environment. Most people on this forum will gladly offer advice and suggestions, but a free design service may be stretching the point

 

[mozzo]

sounds like a good money job

 

[Knobhead]

What are the reg’s regarding 3 phase in a shower room?

 

[High Tower]

How many showers in the shower block?

What's the rating of theses showers?