On Monday, November 18, 2013 4:52:51 PM UTC-5, wrote:
On Mon, 18 Nov 2013 11:11:06 -0800 (PST), "

wrote:



On Monday, November 18, 2013 1:54:55 PM UTC-5, wrote:

On Mon, 18 Nov 2013 06:39:55 -0800 (PST), TimR



wrote:







I hate to display ignorance, and I know I should know this.







But maybe somebody can explain.







The power lines are 3 phase, meaning they're 120 degrees out of phase to each other







Yes.







allowing 3 wires to carry what 6 wires should (since they're generated by 3 sets of coils at the power plant).







Kinda sorta.







The house is fed by just one of these wires, through a center tap transformer.







Yes.







That transformer sends 3 wires to the house: Neutral, +120 volts, -120 volts.







Well... There are two AC wires that are opposite, yes. If you said



they were +120wt and -120wt, you would have a point (w being the



angular frequency, or 2*Pi*f and t=time).







And if you said they were 180 different in phase from

each other, relative to the neutral, you would also be correct.



Wrong.



KRW only understands opposites, not phase.



No, unlike the stupid lying ass, Trader, I know the difference.

more lies snipped

Yes you have to snip them because they are irrefutable and
show that you;re wrong.

Typical, more name calling when you've lost an argument.
Is the IEEE lying too? Here from the peer reviewed IEEE, a paper
presented at a conference of power engineers:

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. "


Or how about this:

http://www.assocpower.com/index.php?Single-Phase-Power

A split-phase (240/120V) power system is a 3-wire, single-phase, mid-point neutral system, which consists of two 120V "voltage sources"; connected out-of-phase by 180 electrical degrees with a neutral connection between them.

Or this:

http://www.samlexamerica.com/support...Circuit s.pdf


"The phase of hot leg 2 (phase B) is in the opposite direction,
ie 180 deg apart from the phase of hot leg 1 (phase A)"

"The secondary of the distribution transformer has a grounded
center tap and is wound in a manner that supplies two 120V AC
phases which are 180 deg out of phase with each other (split phases)"

They even go on to talk about using a oscilloscopet to look
at them and say:

"This indicates that the two 120V AC voltages are 180 deg out of
phase"



Go ahead, snip those truths too and keep making an ass of yourself.