A.Lee wrote:

I've been renovating the G/Fs bathroom this week, upon going to turn off
the shower supply, I found that it was supplied from a really old fuse
box, as well as looking like it is a spur from the cooker supply.

Just looking like, or is it actually on the cooker supply?

Is there a cooker on it as well?

What is the rating of the shower (usually given in kW)

And what size was the fuse?

And what cable is in use? You can find out by measuring it and looking
up the size he

http://wiki.diyfaq.org.uk/index.php?...es#Cable_Sizes

There are no RCDs anywhere in system.

Prior to the 17th edition regs[1], there were plenty of cases when an
electric shower could be adequately protected and safe even without a
RCD. So don't read too much into there not being any at the moment.

I would be more concerned about checking that the cable and fuse rating
are appropriate for the size of shower.

[1] The need to protect cable runs will probably require a RCD anyway now.

To make the shower a little safer, I would like to fit a RCD to it.
Would something like this be suitable:
http://www.screwfix.com/prods/69659/

I presume, to fit this, I would disconnect the supply to the pull
switch, fit the supply to the RCD, then the output to the pull switch?

In effect - often these are positioned close to the CU rather than close
to the shower though.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/