1.ground wrapped back around the romex
2.don't see any ground from the either romex in landed in the box
3.the flex has no ground (could be less than 6 feet)
4.Looks like a 3/0 box and it's overfilled. Even a 4/0 X 11/2 only has max 7 #14 and this has 8 wires. This looks like a mixture of 12 and 14.
5.Overcurrent protection could be an issue, is it 15amp or 20amp.
6. Radius of the bend in the black romex (now I'm being picky)
7.Is the redhead there in the AC cable
8.I'm assuming you found it wiothout a cover.
9.What's the circuit voltage? Is the orange being used as a neutral? Or are the whites being used as a hot?
Gotta be a DIYer. I cringe when I find these. It takes about an hour to patiently explain to the owner why his little box needs to be completely re-done.
City of Irvine, CA