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[g3ymd] Neutral/Earth failure on a TN-C-S PME Service

 

Update We've had a conflab and the decided to send instances to John Woodhouse G6GPF of the EMC comitte first, He will correspond with anyone that has had a failure as he is a former District Engineer, He will then pass information to me for the article
We are Extending the question rather than just PME supplies has anyone had this happen on a convential supply as this can happen where a CNE Joint has been inserted into a TNS Cable
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His direct email is?
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Ian
2E0IJH

Sent:?Thursday, February 05, 2015 at 12:37 PM
From:?"'ian hope' ian@... [g3ymd]"
To:?"g3ymd@..." , "g3trf@..." , "DRM 106" , "Brian Reay"
Subject:?[g3ymd] Neutral/Earth failure on a TN-C-S PME Service
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Hi all I am for my sins involved in writting a article on Uk earthings sytems and RF earthing for Radcom and possible changes to the RSGB PME guidance leaflet.
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There is a Note going into radcom asking if anyone has had a Neutral/Failure on a TN-C-S pme service
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Mains earth failures
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An article is in preparation on earthing and we would particularly like to hear of any instances of a mains Neutral/Earth failure on a property supplied by a PME (TN-C-S) connection. This is the type where the neutral and earth are combined on the supply cable to the house main inlet fuse. When the failure occurred, did any connected RF earths or coax earths become the system Earth/Neutral path? Did any damage occur? Please send any details to giles.read@... so that they can be collated and sent to the article author.
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Either email giles at the Rsgb if you have had a failure or email me direct ian@...
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We all know with a TN-C-S system there is the chance if you have a Neutral/Earth Failure your Rf earth could become the system earth, But we are interested if anyone has actually had it happen
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IAN
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2E0IJH

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