[time-nuts] 60 Hz measurement party
wb6bnq at cox.net
Mon Jun 27 00:52:03 UTC 2011
What you describe does NOT make sense. When you say nuetral or ground do you
mean a second wire ? Surely you do not mean they are using the earth (dirt) as a
return path ? That would be terribly inefficient ! Equally, if the 220 center
tap is earthed along with one side of the higher voltage from the primary side of
the transformer, then I could see where some serious issues if the return path
gets interrupted but the center tap and return line from the transformer are
If I am understanding what you are saying, such a layout would not provide a very
reliable operation for the last drop point if it is a very long run.
Just how long are these single wire runs ? Do you know what the voltage is on
that top wire ?
Could you clarify this a bit more ?
Will Matney wrote:
> I wish it was that way here, but it's not, only along the highway where the
> general business is located. Now, across the Ohio River, on the Huntington,
> WV side, it is more insudtrial, and they do have it in places as your
> thinking of, all through town. It's like that from Huntington WV, all the
> way to Ashland, Ky, or on that side of the river.
> I live in Proctorville, Ohio, a really small town, or really about 2-1/2
> miles above it, and it's all sub divisions here. We're right across the
> Ohio River from Huntington. The poles for all these houses carry one hot
> wire on top, off a single insulator, plus there's a ground or neutral, the
> telephone, and TV cable, and that's all we have on a pole. They just bug
> onto the top line with the fuse blow-out, and into the transformer. Out of
> the transformer goes to the neutral, and then a ground wire down the pole,
> if it's a pole with a transformer on it, like behind me here. It's like
> that everywhere here, unless you get to a larger city like our county seat
> at Ironton, or at South Point. The three phase lines we have are along the
> highway, and or main roads, but when you hit the streets, that are all
> residential, the above mentioned scheme is all we have. I guess it's
> because that on this end of our county, it was mostly farming, until now
> that's it built up over the past 30 years. The farms are gone, and in their
> place are new sub divisions, but they still run the power to the new homes
> the same way. To have three phase here, you either have to own property by
> the highway (St Rt 7), or you use a converter. I guess that's just the way
> AEP wants to do it.
> ?*********** REPLY SEPARATOR ***********
> ?On 6/26/2011 at 4:27 PM WB6BNQ wrote:
> ?Will Matney wrote:
> ?As of now, the only 3 phase lines around here are close to the major roads
> where business resides, but when you get into the residential areas, it's
> only single phase on the poles.
> ?I am going to have to disagree with your statement above (in blue). In
> residential areas the top three lines are 3 phase and, typically, 4 KV.
> Yes, only single phase is routed to homes as 220 volts center tapped via a
> transformer. AND, you will also see three (3) 220 volt lines at a lower
> level on the poles feeding the houses grouped for that transformer.
> Depending upon routing, there may be small runs that are stringers from a
> transformer where only the 220 volt wires are run, but only because there
> was no intent to continue the 4 KV bus in that direction.
> ?The reason for the 3 phase is to balance the load to the substation. That
> is the transformers are spread out along the path and connected (single
> phase) alternately across different phases.
> ?At least that is how it is done out here on the West Coast ! I realize
> there may be exceptions in really old areas of the country, particularly
> along the East Coast.
> ?I am located in San Diego, CA area. What part of the country are you in ?
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