This is a main panel fed off of a transformer mounted at the top of the stairs in the loft of a commercial leased space. To the right of the stairs, about 12' away, is the man door (main entrance) and an over head garage door, both of which lead outside. The transformer has a means of disconnect on the line side. The panel has a main breaker. The overhead lighting is by switched via the breakers. No GEC or GE. Grounding is dependent upon the GRC of the interior conduit system.
They decided to partition off the big warehouse. This is a straight through pull box with no splices.
This is a ceiling mounted "dock light" switched by a wall mounted snap switch.
I notice the receptacles under the panel. This supports my contention that every panel ought to come from the factory with a receptacle as an integral part of the panel. One good sign: Hoffman sells a receptacle for mounting on DIN rails.