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Joined: Aug 2002
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http://www.news.com.au/common/story_page/0,4057,6699117^1702,00.html
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Joined: Jul 2002
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ThinkGood, It's not the way that I want to leave this Earth!. Makes you think though, about your next pit-stop at the side of the road, at night, of course!.
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Joined: Aug 2001
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Presumably there was some current flowing to ground on that "uncovered ground line." A tragic demonstration on voltage gradients.
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Joined: Nov 2000
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Was this a single wire earth return system? Don
Don(resqcapt19)
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Joined: Jul 2002
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Bjarney, Over here, that current is a maximum of 8 Amperes, it's normally a lot lower than that though!.
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Joined: Apr 2002
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Mike, at the time I spoke to an engineer at the utility in Calgary who explained that a government inspector required periodic {annual or ?} tests of ground resistance at the remote end. The utility would also run a span between the last two poles {at the remote 15kVA pot} and bond ground electrodes at both poles, for reliability’s sake.
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Joined: Jul 2002
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Bjarney, That sounds like a real good idea!. The main down-fall of SWER systems, is what would happen if the Earthing is faulty. It's best to have as lower Earth resistance as possible.
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Joined: Jul 2002
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Bjarney, ECP 31, over here calls the need for tests to be performed at 9 monthly intervals. The test value shall be less than 2000 ohms(?!). This value seems awfully high!!.
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Tom
Shinnston, WV USA
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