1st off it is my understanding that Belden CAT5 cable is made with 24g solid core OFC copper with a Teflon Insulation in a PVC jacket. That being said, the Plenum Flamarrest Jacket is basically just a better/higher spec'ed outer PVC jacket correct? Not that it matters b/c it's going to be sh*t canned anyway, just wanted to be 100% sure . I have heard different things about it but this has always been my take. So on to my main question: What are the differences between the standard Belden 1585A & 1701A? What about the 1577A? It still has the FEP insulation just like the 1585A & 1701A just with more conductors (24 vs. 8). What do you guys think?