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Bonding....
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<blockquote data-quote="Rob_the_rich" data-source="post: 396775" data-attributes="member: 8419"><p>The only time I think it might be touched is if there is a huge leak, the place is flooded, the householder/plumber is soaking wet, he/she leans on a radiator to access the stopcock. Water gets into a fitting elsewhere and causes a fault current, there is no rcd protection on that circuit (or rcd faulty) the voltage rises on the equipotentially bonded radiator, there is a potential difference between the rad and the stopcock....Unlikely I know, but even small earth leakage currents can give you a belt. And an rcd won't trip if current is flowing from the radiator to the stopcock through you.</p></blockquote><p></p>
[QUOTE="Rob_the_rich, post: 396775, member: 8419"] The only time I think it might be touched is if there is a huge leak, the place is flooded, the householder/plumber is soaking wet, he/she leans on a radiator to access the stopcock. Water gets into a fitting elsewhere and causes a fault current, there is no rcd protection on that circuit (or rcd faulty) the voltage rises on the equipotentially bonded radiator, there is a potential difference between the rad and the stopcock....Unlikely I know, but even small earth leakage currents can give you a belt. And an rcd won't trip if current is flowing from the radiator to the stopcock through you. [/QUOTE]
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