M
MDJ
Rcds, thats will put your mind at rest.
Discuss TN-S high Ze in the UK Electrical Forum area at ElectriciansForums.net
I think the DNO should come out and improve the reading. But as I said when I tested from the live in the fuseboard and the sheath of the incoming cable the best I could achieve was 1.7 Ohms so I cannot see how they could give me the required 0.8 Ohms. This is why I have asked the question to see if someone has had this problem before and solved it or advise as to the best way forward.
yes...rodding it will give no real advantage here.....it would be unlikely that TT would give a similar value....and as you say...its distributer earth...so they can sort it....Yes call the DNO. It's their earth and they have to maintain it. Don't start making this into a TT, you only need to consider this when no reliable earth has originally been supplied.
thought this was more about the fluke though Archy...I hope the OP Zeroed his Instrument correctly!
but he needs to get put straight through to the duty engineer....As TaffyDuck has already said fault could be anywhere between mains intake position and sub station. Fault could easily rise way above existing 1.7 ohms. Get DNO out to it. Generally find they respond very quickly to earthing faults on distribution system. Generally couple of hours max.
but he needs to get put straight through to the duty engineer....
not some dopy, obnoxious bint on the end of the phone....
Bang an RCD in and you will be fine, in the mean time you could contact the DNO and ask them to improve the reading, 1.7 ohms isn't the end of the world and far better than a pin in the ground giving a 30 ohm reading lol.
Reply to TN-S high Ze in the UK Electrical Forum area at ElectriciansForums.net
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