Its only a 30A 3-pole fused switch, never saw the sizes of the fuses. No separate group controller that I could see, just the (4) main controller cabinets. Each controller has a 100A, 3-pole feeder. There are also the car lights 120V disconencts, but those are different.

What is strange is that the single service car also has another separate disconnect which is labeled as "#5 group' Well the one and only service car is #5, so yeah, that's that. And that service elevator also has a 100A 3-pole feeder and 120v car lights circuit just like the other 4 cars.. It seems like they must be powering the controller logic boards separate from the machine DC drives. Its strange, I'll have to see if I can look at the prints when I go out there again.