On 08/07/2018 09:55 AM, trader_4 wrote:

[wires]

Problem two:

According to Fretwell, two phase power existed 100 years ago, and it
was over two wires, 90 degrees phase difference.

Wouldn't that be 4 wires (2 per phase)?

Suppose I run it
over 3 wires instead, with a shared neutral, make it 120V. So,
you have a generator supplying 120V, two coils, one shared neutral.
Would there still be two phases there?
(I believe Fretwell said yes)
Your answer?

[snip]