Bonding issues - yes or no
- Thread starter Hatsoff
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Hatsoff, OOI, how up to date are your books?
... but that's presumably the incoming supply pipe which, as several of us have said, obviously needs to be main bonded (although the OP says it isn't!). Once that is done, it's very unlikely that any other water pipework within the premises would qualify as an (independent**) extraneous-c-p, isn't it?
[ ** The fact that internal pipework is connected to a (bonded) extraneous-c-p obviously does not create a need to also bond that pipework, since one would otherwise having to be bonding it every millimetre along its length, not to mention the fact that it would be totally unnecessary
]Kind Regards, John
Yes, but isn't the situation that there is NO main bonding - to the lead or anywhere else?
Yes, as of half way down page 2, that does indeed seem to be the situation. It seems that the copper pipe whose absence of bonding was the subject of the OP is actually fed from this lead incomer, which appeared on page 2, and which apparently is not bonded. Strict compliance with the regs therefore requires something to be bonded, preferably the incoming lead pipe but, if that is 'impracticable', I suppose the copper pipe as a second best.
I can but assume that the "2 sparkies and a lecturer" were expressing the view, which they perhaps regarded as 'pragmatic', that if there were only 12 inches of extraneous-c-p before it turned into plastic, then there "wasn't much point in/need for bonding". However, even if one bought that argument (which can hardly be said to be 'compliant') we've now heard of this lead pipe, and don't know how long, or how exposed, that is.
Kind Regards, John
There was no mention of lead in the first post, just subsequently. If it's lead, then copper, it doesn't matter how much copper, it is extraneous and requires main protective bonding.
The plumbing looks like quite good, are you *really* sure lead was left? You haven't just realised what is required to make it extraneous and decided today it's lead?
The plumbing looks like quite good, are you *really* sure lead was left? You haven't just realised what is required to make it extraneous and decided today it's lead?
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I think some people here are being a bit harsh to the OP. At first he didn't clearly describe that there was a lead incomer, so I understand where the initial confusion came from. But now we know the scenario he has not done anything wrong and his thinking that it does need main bonding is (appears to be) correct. I don't blame him for doubting he has missed something, and coming here to clarify what he already thought, if two other electricians and a lecturer have said otherwise.
I think a few years back people thought all incoming water pipes needed bonding where they turn to copper even if they enter the building in plastic, and hence not extraneous conductive parts.
I think a few years back people thought all incoming water pipes needed bonding where they turn to copper even if they enter the building in plastic, and hence not extraneous conductive parts.
I think that one in three "electricians" having a clue is about right.
Two in three is also possible, though.
I agree with flyingsparks about the OP.
It was his initial post which gave the impression that the incomer was plastic beneath the picture which led to doubts.
It was his initial post which gave the impression that the incomer was plastic beneath the picture which led to doubts.
You couldn't really blame them too much for thinking the same even now ... taken as the regulation is actually written there appears to be a requirement to bond copper pipework on the consumer's side of an "insulating section or insert", in which case what one is being required to bond is not an extraneous-c-p (hence does not need bonding), regardless of whether the supply enters the property in metal or plastic!!
Kind Regards, John
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http://www.oaktreekent.co.uk/files/pdf/17_edition_factsheet_05.pdf
I found this to be that rare thing - a document that actually makes things clear!
I found this to be that rare thing - a document that actually makes things clear!
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