On Wed, 22 Jul 2009 16:03:14 -0700 (PDT), NT wrote:

So if I understand you correctly you also think equi bonding only need
be installed if and when electrical work is done. Note I say 'need
be', not 'is an option'.

NT

I would consider an electrical inspection (diy or professional) to be
electrical work. If the supplementary bonding is found to be missing (and is
needed because it is not a 17th edition installation) then the house
electrics are not up to standard and the bonding should be installed ASAP.

However I do not think that any authority can cut a supply to a house due to
a lack of supplementary bonding and people cannot be made to add the bonding
just because it is missing.

Adam

indeed... so there is no requirement.

Whether it ought to be fitted is another matter, one of opinion, and
the job is one which most households arent concerned about doing.
Given the near zero safety benefit I'd personally agree with them.

I took the bonding off the metal bath when I re-plumbed, as there's no
metal to/from the bath at all. The shower's on a RCD (nominally 30mA but
goes between 20 - 25mA) and if the shower were to become live there's no
path to earth anyway. If a fault develops and the RCD fails, I'd rather not
be the link beween 240V and a bonded earth!
--
Peter.
The head of a pin will hold more angels if
it's been flattened with an angel-grinder.