Down below 15' (or so) the wiring methods are standard RMC, FS boxes, NEMA 12X enclosures and THWN.
Many times there are people are out on the floor during a burn.
My guess is that the high ceiling with massive exhaust vents and the ground level fresh air supplies that the heat goes up and does not effect the wiring systems down low.
I did take pictures of the room itself but all it looks like is a black hole in the pictures.
Everything is the same black soot color.
