emptech 0 Posted Sunday at 01:11 AM A few years ago I added some additional IP cameras for a customer. The cable was supplied by the customer, it came in a white box, no name. I ran a couple legs, about 200 feet each, all of the outside runs were in 1/2" EMT to provide protection from the weather. I recently got a call that one of the cameras quit working, the brand doesn't matter here. I tested the camera with my Triplett tester, the camera checks out ok. I checked the cable for discontinuities with both my Triplett and Fluke, somewhere inside the conduit, about 86 feet from the camera I found three opens, some as much as a foot apart. I've run many thousands of feet of cable in my life and have never seen defective cable. Tomorrow I pull the cable from the conduit and strip the jacket looking for physical damage, but that will be tomorrow. When a company manufactures 1000 foot spools of cable, is each of the eight conductors a continuous length of wire, no splices? I know I've seen even Belden multi conductor jacketed wire with splices once in a while, inside the jacket, would never have known that. So back to my question, it's hard to believe that there are no splices on 1000 feet of multi conductor cable, if there were not, I think there would be a lot of wire going into the recycle bin. I think I'm going to find splices near the discontinuity, the break could be because of brittle solder connections, thermal expansion/shrinking, etc. My TDR only shows reflections from the opens, no noticeable changes in impedance. Has anyone else seen this problem? It's a first time for me. In case somebody responds and the message doesn't get forwarded to me - emptech@surewest.net Jim Share this post Link to post Share on other sites
