lvguy 0 Posted April 11, 2006 Wiring a 70v audio system and cameras. Using 59 + power for 24ac cams and 16ga for speakers. The cable will be pulled together through emt, so I'm wondering if I need shielded speaker cable to prevent interference. Share this post Link to post Share on other sites
VST_Man 1 Posted April 11, 2006 you should be ok....................if you run into problems you'll need to ground the shielded end(s) of the RG59................only to the DVR ground. Never ground the distan end of any camera or cable........always ground it back to the DVR common. If you "think" you have to ground at distant end, use a cheap UPS/APC for the power source and that usually gets rid of any Ground Loop problems. Share this post Link to post Share on other sites
