Why Is American 220v Not Considered 2 Phase?

[john.k]

And then there is SWER with single phase motors up to 20 hp/400V.

 

[RJSakowski]

And then there is SWER with single phase motors up to 20 hp/400V.

The farm that I eventually bought had a SWER wiring scheme of sorts.. Rather than run a neutral back to the meter, they relied on the black iron water pipe to provide the neutral. At a later date, they replaced the iron with polyethylene. It made for some interesting moments depending on how balanced the lines were. I had measured as much as 40 volts from the neutral to earth at times.

 

[CluelessNewB]

"Modern automotive alternators are three phase generators using full wave rectification. "

I had no idea!
R

And some high output alternators for marine, RV and trucks are 6 phase!