Bill!
Is that item on the left some sort of a Main Disconnect? Does it have any overcurrent protection?
Yes that’s the main disconnect. The panels overcurrent protection are the main fuses (16 A for each phase) which can be found at the meter panel. All meters for the different apartments are placed together. A room in the basement is a good place.
What is the thing on top?
I’m not sure which picture you’re referring to. If it’s the one with the cover off so are “the things on top” two
Copper bars. One neutral bar and one ground bar. They are connected together with a type of screw. The two black things on top of the picture (when the cover is still on) are stickers that’s reminds you to tighten the screw properly.
