jaaan44

Was hoping somebody would enlighten me about a wiring issue in the installation of a CCTV System for a building. -Suppose you have a 3-story building. -For each floor you have 16 cameras. -Siamese cables are used (RG59 + power cord) -The 3 16-channel DVR's are located on the 3rd floor. How will i go about installing the wiring for each camera? Should the cables run from the camera directly to the DVR? or Do i have to build a junction box/wiring closet to every floor of the building where the connections will terminate, then make a connection from that particular floor's junction box and connect to the DVR on the 3rd floor? Our current setup is just connecting all cameras in the building directly to the DVR. Not sure if that's the appropriate approach though. Any help would be greatly appreciated. Thanks. =)

Thanks a lot guys. These are really VALUABLE inputs. I have a few additional questions though: 1. If connection requires more than 250ft, why should we settle for Cat-5e and baluns? Is Cat-5e better at transmitting video signals than RG cables? 2. Is it ok to run network cable runs, PABX lines, and surveillance cables in the ceiling in one cable tray? 2. I was thinking of putting up wiring closets for each floor, these closets will house all network cables, Pabx phone lines, and surveillance cable terminations (for future expansion purposes). This is where i intend to put the junction box for the surveillance cable for each floor. You think this is a good idea?