<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I don’t know much about the POE stuff as I am just learning all of that stuff myself. However, you can get a DMM (Digital Multimeter) and test for the continuity in the wires. I think this videos shows how to do a continuity check on a cat5 cable <a href="https://youtu.be/Sphe1oBnQd8">https://youtu.be/Sphe1oBnQd8</a><br><br><div id="AppleMailSignature" dir="ltr">Sent from my iPhone</div><div dir="ltr"><br>On Aug 15, 2019, at 7:08 PM, Derek Atkins via Ale <<a href="mailto:ale@ale.org">ale@ale.org</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><span>HI,</span><br><span></span><br><span>I am renovating my house and pulling lots of wire. I pulled some Cat5e</span><br><span>for some in-house PoE IP Cameras and one wire appears to have been clipped</span><br><span>by the mudders. They ripped the outside insulation and appear to have</span><br><span>nicked one of the wires -- looks like the blue. Doesn't look like the</span><br><span>broke the wire, just grazed it. Unfortunately they did it just where the</span><br><span>cable exits the wall, with no slack inside the wall (but a good 10-20 feet</span><br><span>rolled up outside, past the nick! OOPS).</span><br><span></span><br><span>I know my cameras are only 100mbps.</span><br><span></span><br><span>According to <a href="https://en.m.wikipedia.org/wiki/Power_over_Ethernet">https://en.m.wikipedia.org/wiki/Power_over_Ethernet</a> it looks</span><br><span>like PoE with 100BaseT may leave the blue (and brown) wires unused, if</span><br><span>it's using mode PoE A. How do I know what PoE mode the switch (a Unifi</span><br><span>US-48-750) and my camera will use?</span><br><span></span><br><span>In a related note, what is the best way to test if the wire is still okay</span><br><span>or if it got sliced? I can't tell by looking at it. It doesn't look cut,</span><br><span>just a bit stripped.</span><br><span></span><br><span>Any suggestions (short of asking my contractor to re-run the cable?)</span><br><span></span><br><span>-derek</span><br><span></span><br><span>PS: Linux related because I am running zoneminder on a linux box :)</span><br><span></span><br><span>-- </span><br><span> Derek Atkins 617-623-3745</span><br><span> <a href="mailto:derek@ihtfp.com">derek@ihtfp.com</a> <a href="http://www.ihtfp.com">www.ihtfp.com</a></span><br><span> Computer and Internet Security Consultant</span><br><span></span><br><span>_______________________________________________</span><br><span>Ale mailing list</span><br><span><a href="mailto:Ale@ale.org">Ale@ale.org</a></span><br><span><a href="https://mail.ale.org/mailman/listinfo/ale">https://mail.ale.org/mailman/listinfo/ale</a></span><br><span>See JOBS, ANNOUNCE and SCHOOLS lists at</span><br><span><a href="http://mail.ale.org/mailman/listinfo">http://mail.ale.org/mailman/listinfo</a></span><br></div></blockquote></body></html>