what will i need

Firstly you need to notify your Local Area Building Control office as this work is notifiable under part P of the building regs.
How long is the run? What size supply do you have, what other circuits are there? How long a length of cable from the CU to the shower location (including isolator switch)? What is the fuse type? What is the ambient temperature of the run? Is the cable to be grouped with any other circuit cables? Will it be run through/against thermal insulation? Is your bonding up to scratch?
 
erm all i no is that on mycu i have got a spare space for something else to be wired in but it has got to be moved along towards the biggest suply which is the main fuse.and the distance from the bathroom to the cu is about 2 metres,there is an rcb on the cu.
 
How long will the cable run be?

Where will the cable be run?

Do you have a spare way on the consumer unit?

What's the total load from existing circuits?

Which CU is it?

Is your earthing up to current standards?

Since installing a new circuit is notifiable under Part P of the BRs, have you notified the LABC?

Edit: oh b*llocks; the world and his dog has already asked all of these. Sorry. :roll:
 
Davey you do not seem to grasp that this is not a job you are competant to do yourself, if that is your intention.
 
lazygit said:
https://www.tlc-direct.co.uk/Technical/Charts/VoltageDrop.html
Doesn't make corrections for ambient temperature, grouping, insulation, or rewirable fuses.
 
quite right Softus,
But in a domestic enviroment you can rule out ambient correction as I doubt anyone can handle a house greater than 30 degrees. I would have thought its common sense to run a shower cable seperately and not sandwich it between sheets of thermal insulation, and it sounds like he has MCB's but he hasnt said for sure.

I say that I think its common sense but then there are plenty of idiots that think electrics are easy
 
It's common sense to learn all about doing something before you do it.

It's common sense to install circuit protection that will trip before the cable melts.

It's common sense to read the MIs.

If people were commonly sensible, this web site would struggle to survive. ;)
 

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