On Nov 17, 2005, at 1:08 AM, Peter Chadwick wrote:
> Rich said:
>
> ?
>
>> >Bonding the enclosure to the neutral wire insures that the enclosure
>> can not become a shock hazard if the safety-ground wire is severed by
>> an anomaly.<
>
> But an open neutral in such a case leaves the enclosure at some
> undetermined voltage above ground. Depending on how good the neutral
> grounding is at the service entrance, an open neutral in the feed to
> the property can float enclosures above ground.
Are you advocating a second grounding/a.k.a. earthing/ of the neutral
at the receptacle?
> It comes down to the probability of opening a safety ground or a
> neutral, and if they run together, the probability is that severing
> one severs both.
Perhaps a third safety-ground wire might be advisable?
>
> 73
>
> ?
>
> Peter SM/G3RZP
>
> ?
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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