I’ve been doing wiring with nmd90 14/2. At one point I noticed a small section of the wire (more specific, then outer sheath) is somewhat distorted. At first I thought it might have been just how I pulled. No as I continue to string more wire I’m seeing it more often.
I went to the spool to check wire that I had not yet pulled, and see that the sheath is like this right from the spool. I’m half way through a 250’ spool and as I work, I start questioning if there are safety concern.
Attached is a picture, although somewhat hard to see. It’s like the outer sheath isn’t formed around the wires. Other than that, the sheath is normal. It looks like this distortion is about every 10 to 15 feet.
Should this be something to worry about?