Will, 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 still connected.
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 ? Bill....WB6BNQ Will Matney wrote: > Bill, > > 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. > > Best, > > Will > > ?*********** REPLY SEPARATOR *********** > ? > ?On 6/26/2011 at 4:27 PM WB6BNQ wrote: > ?Will Matney wrote: > ?snip > ?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. > ? > ?Best, > ?Will > ? > ?Will, > ?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 ? > > ?Bill....WB6BNQ > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.