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[OM] Re: [OT] 3 phase wiring

Subject: [OM] Re: [OT] 3 phase wiring
From: "Adam" <olympusom@xxxxxxxxxxxxxx>
Date: Mon, 19 Apr 2004 19:38:00 +0100

>
> This is different in the states where 60 Hz has affected the way they us
> electricity. They use 110 volt for normalloads and 220 volts for high
power
> loads. For a certain load of power, less volts requires more current. More
> current requires more copper. And this cost a lot. I'm a little grey on
the
> US distibution system, but I recall that they get three wires to their
> house - two 110 volts to neutral and 220 volts between the two 110 volt
> wires. Personally, I think they can't accept that they should have gone
240
> volts 50 Hz!
>
Well you didn't mention that they use 60 Hz instead of 50Hz for exactly that
reason ! I.e. higher frequency enables more power at lower voltage without
the need for higher current or thicker wires.



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