I'm still thinking this may be a wind up.
For those wondering about why I'm spinning my wheels on ATSs and dedicated electrical branches-
The NEC requires that hospitals have their critical loads divided among 3 separate branches.
Life Safety, Critical, and Equipment.
Life safety branch is only for lighting (hallway, egress, stair well, exit sign), door openers, fire alarms and emergency communications systems which aid in the evacuation of a hsopital during a fire.
Critical branch is for patient care receptacles (ie ventilators, cardiac EKG, dialysis), operating rooms, task lighting, hall lighting... anything which is deemed essential for keeping people medically alive and executing tasks related to it.
Equipment branch is for OR HVAC, motors, ventilation, medical gas and vacuum pumps, ect. Any large equipment needed in the bare minimum of patient care.
If the essential power system is 150kva and under code mandates 1 ATS, but if the load is over 150kva you need at least 3 ATSs.