Re: this was probably really stupid

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: Ed Phillips <evp-at-pacbell-dot-net> 

Tesla list wrote:
 >
 > Original poster: Edward Wingate <ewing7-at-rochester.rr-dot-com>
 >
 > Tesla list wrote:
 >  >
 >  > Original poster: Ed Phillips <evp-at-pacbell-dot-net>
 >  >
 >  > Tesla list wrote:
 >  >  >
 >  >  > Original poster: "Steve Conner" <steve.conner-at-optosci-dot-com>
 >
 >  >  > The 275kV and 400kV power lines I have seen, have each conductor made
 > from
 >  >  > four cables spaced about 12" in a square formation. From an e-field
 > point of
 >  >  > view this has the same effective ROC as a much bigger cable (think 
of a
 >  >  > finite element toroid)
 >  >  >
 >  >  > Steve C.
 >  >
 >  >         This morning I drove under a 275 kV  Southern Cal Edison 
line.  Each
 >  > phase used two conductors, about 1" in diameter (hard to judge from 100
 >  > feet away), spaced a bit over 12".
 >  >
 >  > Ed
 >
 > Ed, Steve,
 >
 > I'm curious where you're getting these voltages. I have listings for AC
 > transmission lines of 34.5,69,115,138,161,230,345,500 and 765 KV and
 > +/-400KV DC but no mention in any of my reference books of 275 or 400
 > KVAC transmission line voltages.
 >
 > Ed Wingate RATCB

	Good question.  I originally thought this was part of the 330 kV
network, but a while ago I was in contact with a guy from SCE (lost
contact, wish I hadn't) about really bad power line noise here and he
mentioned something about it probably being dirty insulators on the "275
kV line" about 1 mile East of me.  Maybe he knew what he was talking
about (sounded as if he did) and maybe he didn't.  Problem was solved
when a bushing on a big pole pig nearby went up in a puff of smoke and
lots of flame.  When the transformer was replaced the noise went way
down.

Ed