From: pallison49@gmail.com   
      
   John Larkin wrote:   
      
   >   
   >   
   > You can use a 120/240-to-anything transformer as a 120-120 isolation   
   > tranny. Connect one half of the official primary to the line and use   
   > the other half as the isolated output.   
   >   
      
   ** The secondary voltage available under load will be lower than the input  -   
   depending on the regulation of the particular unit.   
      
      
   > Ignore the "secondary". The   
   > power rating will be a bit less than specified because you're not   
   > using all the copper.   
   >   
      
    ** Actually it will be higher for the same reason.   
      
   With rated current in both halves of the primary, having no secondary current   
   means the unit will run cooler - allowing up to 41% increase in primary   
   current.   
      
   AC supply transformers are tricky things.   
      
      
   ... Phil   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)