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Student & Learning Zone - City & Guilds
Earth electrode testing
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<blockquote data-quote="Andy™" data-source="post: 501906" data-attributes="member: 2012"><p>it can be less than 21 and greater than 200... lower than 21 not an issue. greater than 200 and it could be unstable, although in some areas you could have a stable reading thats over 200. at least around here, greater than 100 is rare, even from a single 1mtr rod</p></blockquote><p></p>
[QUOTE="Andy™, post: 501906, member: 2012"] it can be less than 21 and greater than 200... lower than 21 not an issue. greater than 200 and it could be unstable, although in some areas you could have a stable reading thats over 200. at least around here, greater than 100 is rare, even from a single 1mtr rod [/QUOTE]
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Student & Learning Zone - City & Guilds
Earth electrode testing
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