On Fri, 13 Jul 2007 14:34:36 -0700 someone who may be
wrote this:-

I'm renovating a 1960's bathroom that at present has no equipotential
bonding. I understand the requirements but there are certain
practical difficulties and I wonder if anyone has any solutions.
1. The new chrome towel radiator has nowhere to attach a clamp, will
connections to the pipes suffice and considering the aesthetics how
close to the rad do these have to be.

To add to what has already been said:

You don't say whether it has an electric heating element or not.
This makes a difference.

If it does have an electric heating element then, provided the flex
from the cord outlet to the heater is short and likely to remain
reliable the supplementary bonding conductor can be terminated in
the cord outlet and the protective conductor in the flex used.
Personally I don't like relying on the protective conductor and
generally install a proper bonding cable, but the regulations allow
one to rely on the protective conductor.

If it doesn't have an electric heating element in it then, if the
pipes to/from it provide reliable metal to metal contact and these
are bonded that is enough.

2. I will be using braided tap connectors. There is no pipe to
attach the strap on the tap side and I assume I can't rely on a
connection to the pipes at the other end of the tap connector. What
can I do here?

Is the tap likely to introduce a potential? A tap on a basin is
standing in free air and so is unlikely to introduce a potential,
just like the little bit of metal in the plug hole.

Potentials are only likely to be introduced by the pipes which run
to the taps. These pipes run outside the room and may be slowly
melting the insulation on a carelessly installed cable. That is why
pipes are bonded.



--
David Hansen, Edinburgh
I will *always* explain revoked encryption keys, unless RIP prevents me
http://www.opsi.gov.uk/acts/acts2000/00023--e.htm#54