shower installation

[sparks]

Hi guys, I've just done my part p and am pricing my first job. The question I have is this. The customer wants a 8.5kw shower installed, the problem is that he wants the cable to come down the wall to the shower unit clipped direct. Is the acceptable? I was worried about water ingress. He says he will box it in. not sure!
Any help gratefully received.
Carl

[professorgbr]

Hi I would run the cable in surface mounted cable trunking to the shower along with the supplementry bonding

[rouman]

you can use trunking, on the surface, but make sure it is fixed with screws. the sticky back stuff , has a habit of comming adrift after a while.don,t forget the bonding.