Am I right in thinking that if the CU has an RCD fitted, there is no need for supplementary bonding and therefore there is no need to earth the bath.........all plumbing pipes are copper except for flexibles joining the copper to the taps.
How so?Baths do not require .. bonding regardless of there being an RCD or not.
If...If the bathtub is isolated from earth...
There might be - but would that qualify it as an extraneous-c-p?There might be a poor-but-not-poor-enough connection to bonded pipework.
Are these metal or whatever the non-metal ones are made of?...copper except for flexibles joining the copper to the taps.
Yes.There might be - but would that qualify it as an extraneous-c-p?There might be a poor-but-not-poor-enough connection to bonded pipework.
It doesn't have to be earth potential.A bath is not an extraneous conductive part, and cannot introduce a potential into the bathroom.
[assuming you mean 701.415.2(vi)] ... But, by answering 'Yes', you've created a circular argument - 701.415.2(vi) only applies to extraneous-c-ps, so you can't use it to define whether or not something is an extraneous-c-p, can you?!Yes. .... Not "effectively connected to the PEB" - 701.415.2(vii) for purposes of omitting RCD and in effect bonded with a poor connection.There might be - but would that qualify it as an extraneous-c-p?There might be a poor-but-not-poor-enough connection to bonded pipework.
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