Er not quite! the main gennies and apu gennies cannot be pararrelled. Indeed, even the apu gennies cannot be pararrelled as the split system breaker will open.
So it would be 90KVA *4 (main gennies all pararrelled) or apu 90KVA *2 (split between busses 1+2 and 3+4)
Mind you, if you were pulling that much load.....there might be a problem
