On 11/23/2013 7:12 PM, wrote:
I guess the IEEE and it's power engineer members must
be among those knowing very little or just enough to confuse,
because they clearly speak in terms of two phases being present.

From a paper presented at a recent IEEE power engineering conference:

http://ieeexplore.ieee.org/xpl/artic...number=4520128

"Distribution engineers have treated the standard
"singlephase" distribution transformer connection as
single phase because from the primary side of the
transformer these connections are single phase and in
the case of standard rural distribution single phase
line to ground. However, with the advent of detailed
circuit modeling we are beginning to see distribution
modeling and analysis being accomplished past the
transformer to the secondary. Which now brings into
focus the reality that standard 120/240 secondary
systems are not single phase line to ground systems,
instead they are three wire systems with two phases
and one ground wires. Further, the standard 120/240
secondary is different from the two phase primary
system in that the secondary phases are separated by
180 degrees instead of three phases separated by
120 degrees."


It could not be any more direct and to the point.


Aristotle says that 4,126 angels can dance on the head
of a pin.

Confucious says that incoming power in the USA in the
twenty first century will be single phase.

Jesus said if thy brother offend thee, and strike
thee on the phase, turn the other cheek.

Billy Graham says he's getting old, but that does
not phase me very much.

--
..
Christopher A. Young
Learn about Jesus
www.lds.org
..