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Filling out niceic form first time
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<blockquote data-quote="Nicky Tesla" data-source="post: 4522" data-attributes="member: 445"><p>-----------------------------------------------------------------------------------------------------------------------------------</p><p></p><p>But remember to leave the earth rod disconnected when you do or you will get a really good reading from the water mains and the gas supply pipework. And if the niceic notice you have an earth rod showing only 0.8ohms on your cert, they will know you have tested it wrong.</p><p></p><p>It says in the regs not to use supply pipes for earth rods, but if they are connected as they should be for main equi bonding, then if a fault occurs the vast majority of the fault current will go down the pipework, simply because a far lower Ze is at the pipework eg 0.8ohms compared to 100ohms at the rod.</p></blockquote><p></p>
[QUOTE="Nicky Tesla, post: 4522, member: 445"] ----------------------------------------------------------------------------------------------------------------------------------- But remember to leave the earth rod disconnected when you do or you will get a really good reading from the water mains and the gas supply pipework. And if the niceic notice you have an earth rod showing only 0.8ohms on your cert, they will know you have tested it wrong. It says in the regs not to use supply pipes for earth rods, but if they are connected as they should be for main equi bonding, then if a fault occurs the vast majority of the fault current will go down the pipework, simply because a far lower Ze is at the pipework eg 0.8ohms compared to 100ohms at the rod. [/QUOTE]
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