A small local EC (buys from big boxes) brought me a section of wire for an opinion. The labeling is:GCC-K Romex 14/3 with ground Type NM-B 600 volts (UL) 6/27/01 #2173/2616. The conductors are THHN but the insulation is thinner than some THHN that I have and there is no filler in the jacket. It is about 25% smaller overall than some 14/3 w/g that I have. Since I haven't been active in homes, is this normal now or is this an import from China? Rowdy
I'm not sure of the particular piece you have but I have noticed a real need to make sure that romex connectors (metal) are not tightened too much on these new 'thinner' cables. They seem to short very easily.
The Southwire 14/3 is a lot tighter that the stuff my supply house sells ( usually General or Carroll). Same with all Southwire Romex. Even though it's smaller I've found it's tougher to pull than the old stuff. Don't know why though.