Shower Replacement

[Scruffy]

I have lived in my current house for 3 years and I think the solonoid in the electric shower has packed up. Rather than replace the part, I thought it would be better to replace the whole shower, given its age etc.

Only now have I realised that the shower does not have an isolating switch, or if it does it is not in sight, neither does the water supply have an isolating point.

I have a few questions:

Will I have to arrange for an isolating switch to be installed when I arrange to get the new shower installed, or can I rely on turning off power at the fuse?

Will I have to turn the water off at the mains before removing the old shower?

As there is an existing shower in place, subject to answers to the above, can I replace the shower myself, or do I have to get an electrician/plumber to do it for me - is there a legal requirement?

The shower is in a fully tiled bathroom upstairs, and I have a sealed Amtico floor, so cannot get below the floorboards (without ruining the flooring). I haven't checked wiring in the loft yet...

Any help & advice would be much appreciated.

 

[andy]

you MUST get a isolator fitted for the new shower. youll also have to turn the water off otherwise youll be a bit wet.

before you get the new shower, make sure the wiring it able to take the load of the new shower, if its a higher rating