On Tuesday, November 26, 2013 7:50:43 PM UTC-5, Ron wrote:
On Tue, 26 Nov 2013 18:26:25 -0500, Ed wrote:



On 11/26/2013 04:48 PM, nestork wrote:

I think Danny now has a much better idea of how his electrical panel

works, and it's really just that part that matters. If he uses the

technically incorrect but easy to understand notion that power is

delivered by the L1 and L2 power cables that distribute power

throughout his house on red and black wires, and returns back to the

panel on the white wires, and that the L1 and L2 power sources are each

120 VAC relative to the neutral, but 180 degrees out of phase so that

there's 240 VAC between them, then he knows more than most homeowners

and enough not to electrocude himself, and that's what counts.



So I'm confused. Are my 240 volt appliances single phase or two phase?



Look on the manufacturers name plate...you'll likely see that it is

single phase.



L1 to L2 is 240 volt single phase. The center / neutral tap is not

needed for 240 volt service.



The 2 phase claim is bogus.



Beware of trolls.

The IEEE is made up of trolls? From an IEEE published paper given
at a recent IEEE conference on power engineering. You couldn't ask
for a more credible source:

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 some electrical eqpt manufacturers:

http://www.behlman.com/applications/AC%20basics.pdf

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