You can look into buying a 250 amp breaker that will fit in that panel, then why not?Hi.
I have some electrical drawings that has a MCC with 3 control panel with a 150A breaker, 50A, 20A and a hoist with a breaker of 20A all individually connected to the same bar (sum of 240). The main breaker of the MCC is 400A. Can I lower the main breaker capacity to 250A? Is there a formula or a NEC table I should go by?