There are parameters for the current for phases A, B, and C which shows the connected load amperage for each phase. What we want to show in our panel and switchboard schedules is the estimated demand current for phases A, B, and C. There only is a Total Estimated Demand Current parameter.
I think that having estimated demand current parameters for each phase is CRITICAL for sizing the bus correctly. The connected load current is too large and not realistic for sizing the bus.
If I size the bus off of the apparent load current per phase then my bus is too big. If I size the bus off of the Total Estimated Demand Current, then one of the phases could have more demand current than my bus and I wouldn't know.