T&T: 30 amp service vs. 50 amp service

[Gil Johnson]

  Bob, you asked:
  One 50 amp 4 wire cord plugged into a 50A 240 volt service can move 50 amps 
  (at 120 volts) on each leg, would it be a 100 amp service ?
   
  Answer:
  Yes, (effectively) if expressed as 110V service
  No, if expressed as 220V service.
   
  As I previously stated, it really depends on what your boat's systems require.  If your boat as two isolated 110V XA systems, then it really doesn't matter if you get 1 or even 2 110V services or a single 220V service.  If you use a 220V service, your boat's wiring will look at the two 110V feeds that make up the 220V feed as to independent 110V feeds.
   
  If your boat's systems are 220V, then you MUST have two out of phase 110V feeds or a single 220V feed.
   
  Gil
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