It is actually a test question. Although I do not know if I have read it correct (bad memory??) But if my bad memory is correct, the question was: What's the min height of a sub-panel in an elevator shaft?
I would assume the sub-panel is for the elevator. But by the looks of it, even a sub-panel for the elevator is not allowed in the shaft. Correct?
You cannot put any building services in an elevator shaft unless it is for the elevators. This is not much at all. Smoke detector, pit light and pit receptacle. I have done more than 1 service call to remove electrical installations that used the elevator shaft as a riser ie only emt and 3 wires were in the pipe.
Now for the mechanical room you need permission from the elevator inspector to put anything more than the electrical for the elevator. Even a jb can be refused if it is not associated with the operation of the elevator. So a disconnect for the car and a disconnect for the car light. a light and switch for the room and a plug for the elevator service guys. Fire alarm device. All other equipment is by the elevator company.
So a panel? No way. even the disco for the elevator has to have a pilot switch that operates from the opening of the main disconnect and a panel won't work for that either.