[Antennas] Ground rod questions (Ground currents)

[rbethman]

The three phase "Y" does NOT derive neutral from the central 
connection!  That central connection IS ground.

I do NOT know where you have been involved in power generation and/or 
distribution.  I sure hope you are NOT so now.  The center of the "Y" 
has ALWAYS been the ground beginning at the generator.  This is the way 
it IS.

Neutral wires are derived from center tapping single phases on a 
stepdown transformer otherwise known as a distribution transformer, 
located either on a power pole OR a pad mounted one in an underground 
system.

Neutrals are NOT carried as the main power distribution system going 
back to substations or generators.

ALL "Y" systems reference their phase voltage to ground, which IS the 
center of the "Y".  The ground is for safety in a short circuit, NOT to 
be a safety in the event the neutral should open!  That is PATENTLY false!

Suggest you consult the NEC and other applicable documents.  Also 
include electrical engineering books.

I may be retired military, BUT - I am ALSO a Board certified Nuclear 
Power Plant Operator and Technician.


Bob - N0DGN

C. Whitaker wrote:
> de WB2CPN
> Perhaps we need to clarify and identify the 
> relationship between the "Neutral" wire which
> comes from the center of the 3-phase "Y" or
> the center of the single-phase transformer which 
> feeds most if not all houses and other small users, 
> and the "Ground" wire that connects to that Neutral
> wire either at the pole or at the service entrance.
> The neutral wire is to carry the current that results
> from uneven currents in the 2 hot wires, while the
> "Ground" wire is to prevent someone from being
> hurt if the neutral wire open up somewhere and 
> makes what's left of it in the house hot.  Nothing 
> has any interest in noise, radio or otherwise.
> Look at this: A housetrailer neutral and ground
> wires were bonded inside the trailer.  Only the
> neutral wire came to the meter, and then to the
> pole.  When that neutral wire opened, (bad splice),
> everything on one side of the 220/110 feed was
> placed in series with everyting on the other side
> of the feed.  The refer on one side, when it came
> on, blew heck out of the clock motor which was
> on the other side.  Then, the refer had no power.
> TRIVIA
> Clete in South Central PA
>
>
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-- 
Bob - NØDGN