On Wed, 9 Mar 2016 15:16:39 -0500, FrozenNorth
wrote:


Is the outer sheathing a different thickness, only guess I can come up
with. I have pulled a fair bit of 15 and 20 amp rated cables, and to the
best of my experience I doubt I could bruise the inner cables since I
have never much more than maybe scuffed the outer insulation.

The usual reason the insulation gets bruised is the installer gets a
little too aggressive driving the staples. You are just "supporting"
the cable, not torturing it.