From: tony.sunnysky@gmail.com   
      
   The power rating in MVA needs to be defined according to the regional standard   
   at a defined atmospheric condition. e.g. 35'C and with solar heat.  There will   
   be a rating for over current defined perhaps at 102 to 120% for normal to   
   emergency conditions    
   depending on seasonal ambient.    
      
   Thus the utilization or margin of derating of this capacity must consider the   
   heuristic fluctuations and mesh capacity margin of the grid for expected   
   variations and with provisions for  isolation protection for faults and load   
   sustainability for nuclear    
   generators.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)