In Bob's picture, I would guess faulty insulation possibly damaged pulling it. All it takes is one bad piece of RMC with a burr of some sort.
I recently pulled new wire for some parking lot lights. I was amazed at the bad wire in that it looked to me like there was about 4" of copper gone and the insulation still intact. Maybe the water in the conduit kept insulation cool enough not to melt. I don't know. Any thoughts from you people?
