randy .. take a look at the breaker again that is not a GE at all it is westinghouse breakers just let you know because i ran into this before and yes it is 400 amp bus bar size but possiblty 600 because i cant tell what size larger conductors come in bottom of box unless the whole thing is inverted.
merci , marc
[This message has been edited by frenchelectrican (edited 06-29-2004).]