Pictured is the exhaust for a gas furnace, using a 3x12 double-wall insulated stovepipe. It is running up a non-load-bearing 2x4 wall sheathed in drywall. Which is apparently legal as far as thermal risk to the walls.
The hole is 14.5" wide, and that leaves spaces at the ends and corners of the oval pipe. Someone chose this route to run some Romex, pictured. Is it legal under NEC to be that close to the exhaust?
I need to run several more circuits there, and I would be inclined to fit an EMT conduit up that same route, either alongside of or replacing the Romex. Is that legal that close to the exhaust?