On Tuesday, August 7, 2018 at 10:11:09 PM UTC-4, wrote:
On Tue, 7 Aug 2018 17:58:23 -0700 (PDT), trader_4
wrote:

On Tuesday, August 7, 2018 at 2:49:17 PM UTC-4, wrote:
On Tue, 7 Aug 2018 11:31:28 -0700 (PDT), trader_4
wrote:

Already addressed that in another post just now. I clearly said "I believe".
Rather odd you're objecting to that suddenly, I've been posting the
same thing for two days.

... and I have been telling you for days, what you say about 2 phase
is simply wrong but you keep posting it.
Telling a lie over and over does not make it true.
You really are starting to sound more like your buddy trump every day.

I addressed it in the other post. As I said, this is the first time
you've insisted that one can't have two phases without 4 conductors.
You said that was the old 90 deg two phase system. I said OK, we can
morph that one step at a time. First step, instead of using two wires,
lets use a shared neutral, make it 3 wires. There isn't anything radical
in that, is there?
Just connect one end of each winding to a common return/neutral.
For a couple days, you didn't object. You have two windings, separated
by 90 deg on one shaft, two hots, one neutral. Very simple.
But now I understand you're
insisting that one can't have two phase without four conductors.
Are you sure that's your position of record? It seems very odd, since
we have 3 phase all over the place with just 3 conductors that it now
takes 4 conductors to get two phase. You might want to rethink that one.

You can duct tape a funnel on the nose of a horse and call it a
unicorn but that does not make it so.
https://www.electrical-contractor.net/theory/2phd1.gif
Look at the diagram on the bottom. You will see that needs 4 wires. If
you make it a Tee or an Ell, you will end up with 3 phase.
In fact that was how they made 3 phase when they had 2 phase
distribution, well up into the 20th century. It was still in my IBM
physical planning manuals in 1990.
Same transformer, just wired the other way.
I am sorry if I keep coming back to transformers but that is what
electrical distribution uses. Don't blame me, blame Tesla and
Westinghouse.

I'm sorry if I keep rejecting your claim that phase requires transformers,
because it does not. Again, you're confusing a particular implementation
with the general case. It staggers the mind that we can get 3 phases
on 3 wires, but you claim that to get just two requires 4 wires.
It's absurd and totally refuted by the simple example of the generator
with two windings, offset by N degrees, with a shared neutral.
Again, no transformers involved.