| Tom Horne, Electrician 2006-04-16, 1:21 pm |
| Charles Perry wrote:
> "Tom Horne, Electrician" <hornetd@mindspring.com> wrote in message
> news:zNj0g.5147$sq5.2564@newsread2.news.atl.earthlink.net...
> <snip>
> I will agree that the stray voltage is more a problem for dairy farmers. We
> have done several projects for dairy farms, utilities in dairy areas, and
> even state commissions.
>
> <snip>
>
> This is the telling part. I most, but not all, cases poor wiring is the
> culpret. The worst part is that your farm might be wired perfect but if
> your neighbor has bad wiring, you might experience stray voltage problems.
> These problems can be very hard, and expensive, to track down. I would say
> "you would be surprised at some of the wiring we see" but since you have
> seen it, you wouldn't be. Perhaps disgusted would be a more accurate term.
> I am always amazed at what passes as acceptable wiring at some facilities.
>
> I can't see the entire electrical industry rebuilding all of the
> distribution lines for the dairy farmers. Those problems are best addressed
> individually.
>
> Charles Perry P.E.
>
>
>
Charles
How can you say that the local ground connections were the telling part
when I had over twenty five amps flowing in the neutral with the main
breaker open and the total current flowing on all four Grounding
Electrode Conductors following isolation was less than five amperes.
That farms wiring was in relatively good condition. The only thing I
changed was the way the individual buildings were grounded and I did
that after the neutral current had been reduced to no measurable current
with the main breaker open. What is very clear to me is that the
utilities are using customer premise grounding to carry a substantial
portion of their neutral current especially on longer lines.
--
Tom Horne
"This alternating current stuff is just a fad. It is much too dangerous
for general use." Thomas Alva Edison
|