[GreenKeys] Australian Power cords.

[scottjohnson1]

This was a common practice by the REA on farms.  One wire to the farm with a ground stake driven in the ground. Pole pig gave 115/ 230v.  Had it as a kid.Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------From: jim at k6ccc.org Date: 6/9/22  09:52  (GMT-07:00) To: Greenkeys <greenkeys at mailman.qth.net> Subject: Re: [GreenKeys] Australian Power cords. From: "Michael Katzmann> The curious practice by Pepco (my utility) is they run 13 kV three phase> without neutral (three lines) on the top of the poles. They have a> transformer on the pole for every few of houses. The transformer has a> connection to one phase and one to an earth stake next to the pole. So the> return is through ground. I would have thought that this would be> unacceptably lossy but apparently not.That does seem a bit unusual, but with a good grounding system, you would be surprised what you can do with an earth return.Here in the western US there are two MegaVolt DC transmission systems.  One from the Los Angeles area to near Bonneville Washington, and the other from the California high desert to Delta, Utah.  Both operate normally with +500KV DC on one wire and -500KV DC on the other wire (1MV wire to wire).  These systems have capacity between 2,400 and 3,100 MegaWatts.  Both of them have the ability to operate with 700KV on one wire and use earth as the return in the event that there is a problem on one of the wires.  I will point out that the ground system is NOT a simple ground rod.73-----Jim Walls - K6CCCjim at k6ccc.org______________________________________________________________GreenKeys mailing listHome: http://mailman.qth.net/mailman/listinfo/greenkeysHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:GreenKeys at mailman.qth.net>>> Jordan Spencer Cunningham's GreenKeys Search Tool: https://teletype.net/gksearch>>> 2002-to-present greenkeys archive: http://mailman.qth.net/pipermail/greenkeys/>>> 1998-to-2001 greenkeys archive: http://mailman.qth.net/archive/greenkeys/greenkeys.html>>> Randy Guttery's 2001-to-2009 GreenKeys Search Tool: http://comcents.com/tty/greenkeyssearch.htmlThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to scottjohnson1 at cox.net
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