XPost: sci.electronics.design, sci.electronics.misc   
   From: invalid@invalid.net   
      
   > However, in this case of a jog function- If a single phase capacitor   
   > start single phase motor has the same starting torque as the 3 phase   
   > motor (and with the right capacitor- this may well be done) a single   
   > phase motor may well fit the needs-electrically-but likely not   
   > mechanically with respect to mounting.   
      
   I (OP) am concerned about jogging. The single-phase motor will be using its   
   start winding, and the associated high current will heat the winding. Jogging   
   means usually repeated, sometimes back-and-forward direction changes, short   
   motor actuations.   
      
   With all this jogging the centrifugal start switch will be abused over time   
   which probably means early failure.   
      
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