On Fri, 31 Dec 2010 13:25:02 -0000
Skipweasel wrote:

In article ,
lid says...
Said 15" pit is now filled with (removable) insulation.
New job on list: fit new deep large bore mains water feed.


Large bore would flow more slowly, making it more likely to freeze,
I'd have thought. Provided the bore is sufficient not to restrict
flow below a useful level, I'd leave it narrow.


That's where the 'deep' comes in. Say 1 metre, water regs is 750mm
for new. Present pipe is only 350mm - hence the problem.

And I'm going to put a heater wire alongside it.

R.