-=> Mike Ross said to Roy J. Tellason
 -=> about "HVDC TRANSMISSION LINES" on 12-27-02  10:20.....

 MR> In my metropolitan area the distribution wire branches off one of the
 MR> 3-phases and carries a few thousand volts along the top of the poles.

Here the HV distribution (which I believe was reduced from 33000
to 11000 a few years ago) is carried as three phase on the top of
the poles. This runs down every second or third street as a ring
supply, to allow isolation of faulty sections without cutting
out too much of the area.

All the stepdown transformers are three phase, and the LV supply
is run as three phase plus neutral, that is four wire, with the
neutral being tied to the metal of every pole.

From Greg Mayman, in beautiful Adelaide, South Australia

... I have had just about all I can take of myself.
___ Blue Wave/386 v2.30

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