loz1984 0 Posted October 1, 2014 normally just doing domestic eletrics but a client asked for a cctv system!! the restaurant had 2 existing cameras, and they required 3 more so we wired a cat 5 to each point, using green and brown as neg and g/w b/w as positive for supply, and blue and blue and white for video connected to baluns, all new cameras were mounted connected ready to go, the client bourgt new monitor and the two existing function, but the new install none worked, when you connect the balun to the dvr it knocks the functioning cameras off??? helpp any one plz Share this post Link to post Share on other sites
Numb-nuts 1 Posted October 2, 2014 The video signal at the DVR should read 1Vp-p. You ONLY require a single twisted pair for the signal (up to 300m) and use the other 3 pairs for 12V DC or 24V AC as appropriate. Your color convention is immaterial. My convention for UTP is for signal and DC/AC current white stripe is +ve abd solid color is -VE This is ONLY my wiring convention and not a required wiring code. GOOD LUCK now in 30 words or less advise me how to wire a consumer unit Share this post Link to post Share on other sites
loz1984 0 Posted October 2, 2014 I will try 3 cores together to see if that gives it a bit more supply, Share this post Link to post Share on other sites
