On Tue, 2 Oct 2012 01:37:48 -0700 (PDT), GMM
wrote:

When we moved into our first house, it had a new shower room complete with electric shower.
The first morning I jumping into the shower - nothing doing.
Investigation showed there was never an attempt to run a cable to it: presumably they had failed to
appreciate the need for it in the design or found too late (as I did) that there was no spare way in the CU.

A few years ago I was called up to a five year old house just bought
by a young couple. Their call was to do something to get the en-suite
shower working, replace if necessary.
Turned out the shower supply cable was there, just dangling down the
back of the stud wall and not connected. It had never been connected,
since new.
So, far from forking out for a new shower, they got the use of an
unused one, that was still effectively new.