I suppsoe soIt could be a lead to copper adaptor meaning the bond should be connected to the copper pipe and not the lead.
Kind Regards, John
I suppsoe soIt could be a lead to copper adaptor meaning the bond should be connected to the copper pipe and not the lead.
So where does the pipe disappearing into a wall go to?<a picture>
I reckon that's one for Bernard! Personally, I very much doubt that a damp wall is ever going provide a low enough impedance path to earth to render anything 'extraneous' in the usual sense. If it did, then you surely would have an almost impossible nightmare scenario on your hands - since not only the pipework, but also any screw, nail or bolt that went into the walls, and anything metallic in contact with the walls, would also require main bonding, wouldn't they?Could it be argued though that the copper pipe work could still become extraneous through contact with damp walls, or even the water conducting across the plastic joint?
That's another interesting idea, but are you suggesting that they are using 'hard' to distinguish between lead and copper/iron? If so, are you suggesting that they are saying that lead pipe shouldn't be bonded? Indeed, in what you say above, the 'insert' is fairly irrelevant, isn't it - wouldn't that argument be the same if the lead were soldered to the copper? What if there were a joint/coupler, with lead coming out of it (as well as into it), before it changed to copper a few more feet downstream - I doubt that you'd suggest that the bonding should be onto the copper, would you? Indeed, what if the entire plumbing system were copper (I'm sure there must be a few examples left ) - would you then not bond at all?But if the joint were metal, as it would have been until relatively recently , then, even if the lead pipe were slightly longer, it would be understandable and sensible that as "there is an insert the connection shall be made to the consumer's hard metal pipework and before any branch".
In theory yes, in measured practise, also yes where the area of contact between metal item and damp wall is large. In normal conditions ( potential of PME earth close to true ground ) damp walls and metal in them will not be a significant hazard but in exceptional conditions where the PME "earth" is no longer at true ground potential the metal items in the walls will give a tingle of a shock.but also any screw, nail or bolt that went into the walls, and anything metallic in contact with the walls, would also require main bonding, wouldn't they?
Yes, but don't forget it says that the bonding should be connected at the point of entry and where there is an insert 'at that point' ...That's another interesting idea, but are you suggesting that they are using 'hard' to distinguish between lead and copper/iron? If so, are you suggesting that they are saying that lead pipe shouldn't be bonded? Indeed, in what you say above, the 'insert' is fairly irrelevant, isn't it - wouldn't that argument be the same if the lead were soldered to the copper? What if there were a joint/coupler, with lead coming out of it (as well as into it), before it changed to copper a few more feet downstream - I doubt that you'd suggest that the bonding should be onto the copper, would you? Indeed, what if the entire plumbing system were copper (I'm sure there must be a few examples left ) - would you then not bond at all?
Then it would be those drain pies/feeds which would require bonding.Perhaps you need to consider case where water comes into house inplastic, copper iinstallation throughout house but extraneous due to metal drain pipes/feeds to outside toilets etc?
It does indeed. However, you now seem to be suggesting that 'hard pipework' means copper/iron, but not lead. As I said, if that were the case, then, if your (metal) 'insert' (pipe joint) was very close to the point of entry and what came out of that insert was lead, then you could end up bonding the service a long way from its entry, and would bond it nowhere in the rare case of all-lead pipework. I can't believe that's what it means.Yes, but don't forget it says that the bonding should be connected at the point of entry and where there is an insert 'at that point' ...
No. Oh, well.I've never been quite sure what 'hard' was meant to mean, but suspect that it was probably merely intended to refer to metal, rather than plastic/rubber/whatever. I dont think that either of us believe that there was ever an intention to say that one shouldn't bond at a particular place because the pipe there was lead, do we?
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local