Never seen this before is it OK. The lines are running to the side of the box to the round thing that states it something for lighting.
Double taps are not OK and that looks like a surge suppressor or TVSS.
Some areas can be listed for double taps but this isn’t one of them. The last time I had one of those devices installed it specified it should be installed on a breaker.
Side note: Copper and aluminum[FONT=Verdana, Arial][size=2] can not terminate in the same terminal unless the device is identified for the purpose.
I’m sure those are not.
Good one thanks Karl… Roy
Manufacturer says to attach to a double pole breaker. They also recommend the arrestor to be installed in some sort of enclosure.