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Article #277Re: Two phases to house - loss of neutral
From: Jasen Betts
Date: Tue, 24 Nov 2009 09:21
Date: Tue, 24 Nov 2009 09:21
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2382 bytes
On 2009-11-24, Sylvia Else <sylvia@not.at.this.address> wrote: > Phil Allison wrote: >> In Australia, AC power delivery uses a system called " Multiple Earth >> Neutral " - which requires that the neutral conductors in a premises be >> connected to the plumbing system at the distribution board (ie power box). >> It also requires that an earth stake be installed for the same purpose, but >> some older premises may not have this. > > If as you say, neutral has to be tied to Earth at the premises, then I > can indeed see that the situation might not be so bad. > > On the face of it, having significant current flowing from neutral to > Earth would have to indicate a fault. It would be nice for the breakers > to trip in such a situation, but I can't see that they will. Having the breakers trip because a faulty neutral in an neighbours house (which would cause his neutral current to flow through his earth and your earth (etc) to the common neutral) could be an annoyance. bye.
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From: Jasen Betts <jasen@xnet.co.nz>
Newsgroups: sci.electronics.repair,aus.electronics
Subject: Re: Two phases to house - loss of neutral
Date: 24 Nov 2009 09:21:58 GMT
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