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bonding
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<blockquote data-quote="green-hornet" data-source="post: 74658" data-attributes="member: 2683"><p>Everyone appears to forget there is a simple but effective method for determining if a pipe requires supplementary bonding or does not, and that is a continuity test.</p><p></p><p>It is a requirement with corgi, now gas safe, to make the last meter of pipes feeding a boiler to be in copper. The gas pipe will always be in copper anyway.</p><p></p><p>The boiler housing and the manifold will always be connected to earth via the outlet and connected directly to the met, via the circuit cpc.</p><p></p><p>At one time plastic water supply pipes where terminated in the house with a 6" length of copper, just so electricians could have some where to bond to. This practice is now fading out, because to bond to any platic pipe over a determined length could raise the potential higher than what was there in the first place.</p><p></p><p>So if your in doubt as to bond or not then just do a continuity test.</p></blockquote><p></p>
[QUOTE="green-hornet, post: 74658, member: 2683"] Everyone appears to forget there is a simple but effective method for determining if a pipe requires supplementary bonding or does not, and that is a continuity test. It is a requirement with corgi, now gas safe, to make the last meter of pipes feeding a boiler to be in copper. The gas pipe will always be in copper anyway. The boiler housing and the manifold will always be connected to earth via the outlet and connected directly to the met, via the circuit cpc. At one time plastic water supply pipes where terminated in the house with a 6" length of copper, just so electricians could have some where to bond to. This practice is now fading out, because to bond to any platic pipe over a determined length could raise the potential higher than what was there in the first place. So if your in doubt as to bond or not then just do a continuity test. [/QUOTE]
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