Circuit Breaker Panels after Transformer 7

[Bin510]

I have a transformer to bring the 3-phase voltage of 480VAC down to 400VAC (for feeding european equipment in the US). From the secondary side of the transformer i want to feed 25 3-phase loads (=75 poles)trough a circuit breaker panel. According to NEC408, i can handle only up to 42 poles (=14 3-phase loads) in one circuit breaker panel. Here my questions:
-am i allowed to connect two circuit breaker panels in parallel to the transformer, and where has the main circuit breaker to be in this case? Do both of them need a main circuit breaker?
-am i allowed to connect the two circuit breaker panels behind each other - one circuit breaker of the first panel to protect the secondary panel?


I appreciate any help!

 

[alehman]

Improper fault rating is a very common mistake when selecting distribution products - and a very dangerous one. It is best to avoid sinusoidal busbars. Probably this isn't directly related to the question, but the point is worth emphasizing.

 

[skiier]

ok Scotty no offense taken.

 

[jbartos]

Suggestion: If there are motors on branch circuits, it is more practical to have circuit breakers since motors tend to burn on fuse protected branch circuits due to single phasing. Yes, it will be initially more expensive to have circuit breaker panel; however in the long run, the Client should be better off.