Regarding the second picture:

A split bolt to hold the ground conductors?

Normally don't you use a Greenie (with the hole for a pigtail) for something like that?

It looks like it's doubling back and then going into that terminal block behind the bolt. Correct?


Fourth picture has two lugs under one screw that also has a couple of square nuts. What gives with that? What's that whire stuff wrapped around the wires?

As far as the last picture is concerned, it looks like metal shavings on the bottom of that encosure (that could cause a short circuit, I'd think). And the insulated green wires are stripped too far back for my taste.

What about the stranded wire to the left? Can that be used with one of those set-screw terminals?