On Tue, 15 Nov 2005 17:44:46 GMT someone who may be "Stephen Dawson"
wrote this:-

So at the moment I am still of the opinion you do not need to bond the
boiler.

Going back to the original posting, 'A report on a house I'm buying
says there "is no evidence of equipotential earth bonding" of the
incoming gas supply to the boiler.' and that is what the subsequent
discussion has been about. I think posters have been saying much the
same thing, but in different ways and this is where the confusion
arises.

The flow and return pipes of the heating system should certainly be
bonded, along with the gas pipe by the meter, under regulations
given earlier. If the boiler is joined to these pipes by reliable
metal to metal contact then it is bonded, just like the radiators.
There is normally no need to attach a bonding conductor to the
boiler itself. As an item of fixed equipment it also has the
protective conductor from the supply connected to the metalwork of
the boiler, just like a built in oven.

Someone asked if this is important. Plumbers are occasionally killed
by unearthed pipework that has become live for some reason, such as
the heat from a heating pipe slowly melting the insulation of a
cable laid over it without protection.


--
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