From: john.wood@nrl.navy.mil   
      
   On 05/22/2013 03:09 PM, Tom Biasi wrote:   
   > On 5/22/2013 2:49 PM, J.B. Wood wrote:   
   >> On 05/22/2013 02:47 PM, J.B. Wood wrote:   
   >>> Hello, all.  Has anyone ever come across a twist-lock plug that just has   
   >>> 3 current-carrying wires L1, L2 and neutral (N) such that L1-N is 120 V,   
   >>> L2-N is 120 V and L1-N and L2-N are 120 electrical degrees apart?  IOW,   
   >>> there is no L3 wire as you would normally(?) expect.  Thanks for your   
   >>> time and comment.  Sincerely,   
   >>   
   >> Hello, again, and I should have said "receptacle" vice "plug".   
   >>   
   > What's the voltage between L1 and L2?   
      
   Hello, and given the 120 degree difference the line-to-line voltage   
   would be 120 * sqrt(3) = 208 V.  We have what would essentially be a   
   4-wire wye 120/208 VAC service but the L3 wire is absent.  So again I   
   don't know if this 3-wire service is common.  I wouldn't think so but   
   I'm not an electrician/electrical contractor.  Sincerely,   
      
   --   
   J. B. Wood	            e-mail: arl_123234@hotmail.com   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)