Bi al are you saying that you can triple up on say a 60 AMP three phase ?
What I am asking is how many rigs can you run on 60 amps?
With every 11 amps on 3 phase at 220 you can run 3 (one on each phase)
At 55 amps that would be 15. You could run 14 or 13 as well but not likely 16.