JTMcC wrote:

"Kathy" wrote in message
...

"JTMcC" wrote in message
...

"Tekkie" wrote in message
.net...

Lil' Dave posted for all of us....


had to have permanent meter loop installed vice a temporary. This
provides
power to the water well pump (30 amp breaker two phase), and a 120V

GCFI

outlet (20 amp one phase) for the home contractor subs.



There is no two phase power. Single or three phase.


There is such a thing as two phase, but it's pretty uncommon these days.
I
believe it's still in use a few places back east. It used to be more

common,

in the early days of electrification.


There's a little 2-Phase left around Philly. Richmond, Hunting Park and
Northeast Philly, that I know of. And there might be some left in Atlantic
City. I have a 2 Phase motor out of an old machine. It's cool.


And I, think, around Niagra Falls.

Yes, and going back to the OP, even thought it isn't common usage, the
two 110V legs off a center tapped transformer really do constitute a
two-phase system. If these two legs weren't 180 out of phase, you'd not
be able to get both 110 and 220.

However, having said that, you will get funny looks if you talk about
having two-phase power in your house, even though is essentially what
you have.


Matt