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Re:Utility poles by throwaway7645 on Wednesday February 14, 2018 @06:39PM (#16380668)
220V isn't very high in the power world. The US has 765 KV. I'm not sure what the highest voltage cable in the world is, but now I'm curious.
Re:Utility poles by mikro2nd on Thursday February 15, 2018 @02:27AM (#16382431)
There is a transmission system in India rated for something over a million volts. The last time I looked it was only carrying about 800kV, though. Just why this was so was not explained. IIRC it was on the Wikipedia article on transmission grids.
Re:Utility poles by ldiracdelta on Wednesday February 14, 2018 @11:34PM (#16381929)
IIRC, my college power professor said that Russian transmission lines carried 1 million volts, whereas US transmission lines only carry half a million volts.
Re:Utility poles by throwaway7645 on Friday February 16, 2018 @11:48AM (#16393622)
We do have plenty of 500 KV (all over Louisiana and Arkansas for example), but a good bit of 765 as well. It's very costly to get right-of-way and the bigger the installation the more right-of-way you need.