Mike Lamb Posted September 30, 2012 Report Share Posted September 30, 2012 Are there any tell tale ways to identify UF if it is not marked? I'm used to a flat cable. Does this NM mean there is no ground? Click to Enlarge 32.66 KB Quote Link to comment Share on other sites More sharing options...
charlieb Posted October 1, 2012 Report Share Posted October 1, 2012 NM means non-metallic sheathed. If you look at the end of the cable where the insulation is stripped away, UF cable is insulated conductors encased in solid plastic. NM cable as you know, has a paper wrapping around the insulated conductors. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted October 1, 2012 Author Report Share Posted October 1, 2012 Thanks, Charlie. I did not look any further than this. An electrician can look when he puts the above grade feed in protective pipe. Quote Link to comment Share on other sites More sharing options...
rkenney Posted October 1, 2012 Report Share Posted October 1, 2012 Cerro Wire 12 AWG UF Underground Feeder Cable. Was carried by Lowes, now discontinued. Does have a ground. Click to Enlarge 8.15 KB Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted October 1, 2012 Author Report Share Posted October 1, 2012 Thanks, Bob. Quote Link to comment Share on other sites More sharing options...
John Dirks Jr Posted October 1, 2012 Report Share Posted October 1, 2012 NM means non-metallic sheathed. If you look at the end of the cable where the insulation is stripped away, UF cable is insulated conductors encased in solid plastic. NM cable as you know, has a paper wrapping around the insulated conductors. Actually, the paper in NM is wrapped around the ground conductor only. The individually insulated hot and neutral conductors are not wrapped in paper. Quote Link to comment Share on other sites More sharing options...
John Kogel Posted October 1, 2012 Report Share Posted October 1, 2012 For Canadian inspectors, it is NMW, non-metallic Wet, if it has a black jacket. The NMW is rated for direct burial, but needs protection where it is exposed. Quote Link to comment Share on other sites More sharing options...
Jim Port Posted October 2, 2012 Report Share Posted October 2, 2012 The cable is required to be marked at regular intervals. With as much cable as I see there should have been several markings that were visible. The grounding conductor is bare so it takes up less space. Quote Link to comment Share on other sites More sharing options...
charlieb Posted October 3, 2012 Report Share Posted October 3, 2012 NM means non-metallic sheathed. If you look at the end of the cable where the insulation is stripped away, UF cable is insulated conductors encased in solid plastic. NM cable as you know, has a paper wrapping around the insulated conductors. Actually, the paper in NM is wrapped around the ground conductor only. The individually insulated hot and neutral conductors are not wrapped in paper. Thank you for the correction John. We all want it to be correct. Quote Link to comment Share on other sites More sharing options...
Mike Lamb Posted October 3, 2012 Author Report Share Posted October 3, 2012 The cable is required to be marked at regular intervals. With as much cable as I see there should have been several markings that were visible. Does the NEC require it? UL doesn't. Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted October 3, 2012 Report Share Posted October 3, 2012 The cable is required to be marked at regular intervals. With as much cable as I see there should have been several markings that were visible. Does the NEC require it? UL doesn't. I don't know about UL, but the NEC requires it in 310.120. Quote Link to comment Share on other sites More sharing options...
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