Rotate the guts, not the box. That enclosure can only be mounted with the hub on top. Its a weather resistant enclosure.I bought an Eaton 200A main lugs panel outdoor panel to be fed as the service entrance from the bottom with a subpanel feed out the top feed thru lugs. Eaton states in their lit that: "a standard panel can be rotated 180 degrees to allow straight-in wiring of power cables to the main terminals."
It looks like (see pic) you unscrew and rotate the bus inside, and keep the weather hub on top. Is that correct?
You cannot put the bottom KO's on top.