arti

Its kind of hard to find siamese cables at my area zz. Its expensive to use gauge 18 cables and gauge 15 cables seems common here. I may be able to find a higher gauge cable what is recommended 22, 23 or ? Or do i have to go for the gauge 15 ones. Thanks

ok siamese cables are not a problem. No longer than 50m of cables are required(check). So guess will be using a centralised power supply then saves any extra work, Guess its time to place the order. Thanks all for your advice.

oh the power block is a adapter(transformer) that comes with the camera like those used for laptops. So i could like input a AC current into it and out comes DC for the camera. If the voltage drop across my setup is not substantial then a centralised power supply would be good. Just unsure of "correct" lengths to use.

ok i just went to confirm the distances for where my cameras would be. They are not very far apart 10 to 50 meters apart from the power supply source. Thinking of abandoning the Cat5 cables and using the 18AWG cables for power to be on a safe side. But now im thinking of using a power block or adapter for each camera instead of my original plan of using the centralised power source so that i can make use of the electrical lines. Or how far can i pull the 18AWG cables from the centralise power supply to each camera without worrying about voltage drop. Is it a alright to use the power block in the same junction box together with the RG59 cables? Will be modifying the adapter so that i can directly input an AC current into it. <- Is this a common practise in the industry(My vendor told me to do it)?

Thanks for the replies. Been reading round the forums only problem with using Cat5 cables for power is the amount of current it can withstand. To me now it seems that using separate electrical wires for power seems to be a better choice and putting the Cat5 cable beside it for later use. My vendor suggested me to put a regulator near each cameras as the centralised power supply is some distance away. (going to check furthest distance for cable run). If it is too far i think individual power supply is the only option. So my setup would now be Camera - regulator - power supply (electrical cable, RG59 and a cat5 for future use together in a conduit) Is this appropriate enough or am i cheated by my vendor .

Im going to install about 10 cctv for my workplace soon. I need some help in deciding how to run power from my power supply box to the individual cameras. I will be using RG59 for the video transmission and im not sure if i should use normal 18 AWG wires to transmit power or CAT5. I was thinking of using CAT 5 as power transmission so that next time in future if i have the money i could upgrade to IP cameras and do away with the RG59. That would save my time on rewiring. so i would like to ask the experts here which way would you suggest i go. Lastly is it better to have an individual power supply box located near to each camera. Or a centralised one. Thanks.