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Bonding ..again !
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<blockquote data-quote="Evans Electric" data-source="post: 478649" data-attributes="member: 1408"><p>Just reading in the NICEIC Connections magazine Q &amp;A s </p><p></p><p>Summed up , no need to bond pipework that enters the building insulated then changes to copper . Thats what they say .</p><p></p><p>To old Pharts like me ...THAT WAS ONE OF THE REASONS WE BONDED IT .... to allow the mains to be PME ALL metallics had to be bonded .</p><p></p><p>With this NOT bonding it I imagine a faulty cable under the floor, exposed live touching the pipework , the pipework is stand alone without Earth potential so becomes live .</p><p></p><p>MCB does not operate because its not a short ....RCD does not operate ..UNTIL ...a person makes a circuit between live &amp; earth . </p><p></p><p>That not good surely ? RCDs are NOT tested at the recomended times </p></blockquote><p></p>
[QUOTE="Evans Electric, post: 478649, member: 1408"] Just reading in the NICEIC Connections magazine Q &A s Summed up , no need to bond pipework that enters the building insulated then changes to copper . Thats what they say . To old Pharts like me ...THAT WAS ONE OF THE REASONS WE BONDED IT .... to allow the mains to be PME ALL metallics had to be bonded . With this NOT bonding it I imagine a faulty cable under the floor, exposed live touching the pipework , the pipework is stand alone without Earth potential so becomes live . MCB does not operate because its not a short ....RCD does not operate ..UNTIL ...a person makes a circuit between live & earth . That not good surely ? RCDs are NOT tested at the recomended times [/QUOTE]
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Bonding ..again !
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