From: hornetd@gmail.com   
      
   On Tuesday, December 3, 2013 12:07:05 PM UTC-5, bud-- wrote:   
   > On 12/3/2013 8:25 AM, trader4 optonline.net wrote:   
   >   
   > >   
   >   
   > > And I'm still waiting for an answer why a system with   
   >   
   > > two phases that differ by 90 deg is acknowledged by everyone to have two   
   >   
   > > phases.  If they differ by 240 deg, that's two phase right?  If they   
   >   
   > > differ by 170 deg, that must be two phases, right?  So, what magically   
   >   
   > > happens when they differ by 180 deg that suddenly there are no longer two   
   >   
   > > phases?   And how do the electrons know?   
   >   
   > >   
   >   
   >   
   >   
   > For a garden variety split-phase supply (240/120V from a transformer   
   >   
   > with a centertap) are there 2 "phases"?   
      
   If you only have one phase supply to the transformer how can you get a two   
   phase output.  If I put a multi tap transformer on that pole do I get a   
   multiphase output?   
      
   What about three phase, high leg delta were one of the transformers is up   
   sized to carry the 120 volt loads and there are three ungrounded current   
   carrying conductors off the secondary.  I suppose someone is going to argue   
   that is four phase.   
      
   --   
   Tom   
      
   --- SoupGate-Win32 v1.05   
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