I am considering havein a electric shower installed as part of a bathroom refit ( probably a 8.5 kw kind )
My question is to do with the supply line for the electric . I have line for immersion heater which has a rcd on it, can this line also feed the shower or does curren regulation require a independent line with a seperate rcd

Thanks

The immersion heater cable will not be able to carry the current.

You need to run a separate cable from the main cu via an RCD. What is the maximum length of cable run you expect to use from the cu to the shower unit?

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The cable run from the fuse box to where the shower will be around 12m
I take it this will have to be done by a qualified sparky (part p qualified ?)

Indeed ..you are looking at 10mm sq for that, best get a napit/niciec spark in...

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Verwood Handyman
I Know it says I'm On-line, but I might have just left myself logged in, whilst I'm out....

If you're stating from scratch it may be a better idea to fit a higher powered shower unit.

Aye, at this time of year with the cold water coming in 8.5 will be like someone dribbling on your face! As above, if you are going to go though the effort of putting new in go for a 10.x or a 9.x as a minimum or you will regret it (unless this is just a backup shower).

BG

This will essentially be a backup shower in the second bathrooom

It will be a new shower as part of bathroom re fit , i will take the size of the shower under advisement, thanks to everyone
I am also considering putting in a normal power shower instead , my only concern is that with two shower it may drain the hot water tank too quickly (the other shower is a power shower)