I got the same story from Southwire a few years ago, but they still didn't answer my question.
If the nylon is to protect the insulation, and it gets nicked during installation at the first bend where it enters the conduit, what protects the insulation during the rest of the pull?
All I got every time I asked that was the same parrot response that they gave the first time. I don't trust the stuff for just that reason. I spec a lot of XHHW-2 for underground work and the large feeders. I've had some very bad experiences with nylon stripping off as soon as the wire comes off the reel and into the end of the conduit run...even to the point where runs had to be pulled out and replaced because the underlying insulation was damaged further on down the conduit run.
