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happyhippydad

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When testing Ze on a TT the only connection between the line and the earth rod is the actual ground.

When you do a Ze is it actually sending a small current through the actual ground from the earth rod at the house to the earth rod at the transformer?

Also, related to the above, I have 2 separate garden light circuits. The customer complained of RCD tripping. The garden lights have junction boxes buried in the ground that lead on to the next light. These Jb's are full of water hence the tripping (IR results 0.006Mohms N-E).

With regards the above paragraph I am getting 0.15Mohms between the Neutrals of both separate garden light circuits (also the earths and line's but you would expect that as light bulbs are in and 0.006Mohms N-E). This is with all the conductors completely isolated, is this again because the separate circuits have a link via the actual ground (due to all the water in the buried JB's)?
 
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happyhippydad

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