To answer the posting title, there is no Rhyme nor Reason to the circuit lay out of a venue. Although the consultants normally try, it usually only makes sense to them and nobody else.
Normally the electrician lands things wherever he wants when the system is installed. After that it's up to the turn on tech and the end user to make it work. As for as the numerical spacing on the rack, you are correct; loads are spread between 3 phases but you can change the patch of the...
have you verified that only one circuit is not working? I'm thinking there might be a wire loose in the connector and you might be missing a phase at times. But for that to be true, you would be missing two circuits simultaneously. Other than that, try using a different address and see if the...