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Do-It-Yourself (DIY) Question & Answer Forum
Multiple earth spikes ???
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<blockquote data-quote="ericmark" data-source="post: 70368" data-attributes="member: 3407"><p>I wonder what you are using to measure with? In UK we often use the earth loop impedance tester but that is where the suppliers earth is 21 ohms or less. Where supplied by non UK suppliers then they may not follow the rules we have in UK. So you may need to use a bridge to measure resistance of rods and this also relies on the two test spikes.</p><p></p><p>Even in the UK I have seen where pole mounted transformers are used then earth has eroded away and the suppliers earth is well over the 21 ohms. However not to get 200 ohms is very rare.</p></blockquote><p></p>
[QUOTE="ericmark, post: 70368, member: 3407"] I wonder what you are using to measure with? In UK we often use the earth loop impedance tester but that is where the suppliers earth is 21 ohms or less. Where supplied by non UK suppliers then they may not follow the rules we have in UK. So you may need to use a bridge to measure resistance of rods and this also relies on the two test spikes. Even in the UK I have seen where pole mounted transformers are used then earth has eroded away and the suppliers earth is well over the 21 ohms. However not to get 200 ohms is very rare. [/QUOTE]
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Multiple earth spikes ???
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