I have a finished basement that I'd like to add recessed lighting to. Instead of solid joists in the ceiling, I have floor trusses. In a way, this is good because I don't have to drill holes in the joists in hard-to-reach places. But my concern is that the trusses are held together by nailing plates that might have sharp edges.
The image below gives an idea what's behind the drywall on the ceiling. Is it safe to fish Romex through the trusses near these plates, or should I use metal clad cable instead? Or is there some better way to mitigate the risk? This is a residence in Western PA
There's another wrinkle here as well. The junction boxes for the ceiling lights that I'd like to tap into for power to the new recessed lights are all plastic. If I understand correctly, armored cable can't be attached to plastic boxes. So if using armored cable is the best way to mitigate the risk posed by the nailing plates, how do I transition to it from the Romex that goes to the existing ceiling penetrations?