"Z" wrote in message
...
In article , Adrian Simpson
writes
All electrical fittings must be supplementary bonded with extraneous
conductive parts. That is light, shower, radiator, bath taps, bath (if
connected to ground eg via lead waste pipe), basin taps, basin (if
metallic eg stainless steel and connected to ground via for instance
lead waste pipe) must all be connected with one continuous earth cable
which should NOT be connected to the earthing terminal.

See

Http://www.iee.org/Publish/WireRegs/...asticPipes.pdf

peruse the rest of the site.

Quite the opposite is true for metal waste pipes that come into contact with
the ground. They must be main bonded back to the main earthing terminal.
Also the IEE say that a metal bath should also be bonded even when metal
pipes are used.

--
Adam