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"Beachcomber" <invalid@notreal.none> wrote in message
news:443f42f8.386640@news.verizon.net...
>
>
> First off, let me say that I am no expert in this subject, but I would
> like to hear the latest current thinking of the professional
> electrical community as to what the current thinking is on this and
> if any 20007 NEC code changes can be expected as a result.
>
> Detailed background information on each case is available at the
> following links:
>
> Argument in favor of multi-point primary neutral grounding:
>
> http://www.neiengineering.com/pdfs/paper10JN.pdf
>
> Argument in favor of single-point primary neutral grounding:
>
>
http://www.mikeholt.com/documents/s...Final5-3-03.pdf
>
> As far as I can determine, the current multi-point primary grounding
> system in the US...
>
> 1. is favored by most utilities
> 2. has less expensive capital costs (fewer conductors - insulators -
> uses single bushing transformers vs. double bushing, etc.)
> 3. Perceived as safer to lineman (assured neutral grounding at
> multiple points)
I have not worked on distribution in a few years. I do not remember ANY
medium voltage system ( less than 69kv) that has a neutral. 3 hots and a
ground but not a neutral.
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