battouter 0 Posted October 27, 2014 When to know what to use? And what is the difference between a 1 amp and 2 amp power adapter? this is from the manual from my camera Power/Current: 12VDC(±10%)/ 600mA My planned setup is for 3 outdoor bullet type cameras at a maximum distance of 50m from the dvr. TIA! Share this post Link to post Share on other sites
Korl 0 Posted October 27, 2014 600mA = 0.6 AMP If you have an adaptor that is able to provide 1000mA and your gadget starts drawing more power, the voltage will drop and unpredicted behaviour will happen. I had an Asus router with two USB ports and if plugged in two USB sticks they would draw too much power. Router would reset, there would be write failures on NVRAM, eventually power supply failed only then I figured out the problem was with the power adaptor. You are on the safe side if you buy 2amp supply, if your camera has PTZ then you'll probably need it. Share this post Link to post Share on other sites
battouter 0 Posted October 27, 2014 thank you for the input, the camera is a fixed focus day/night and doesn't have PTZ or any fancy features for that matter. so would it be safe to say that 1 Amp will do just fine even at a distance of 50m? Share this post Link to post Share on other sites
Korl 0 Posted October 28, 2014 thank you for the input, the camera is a fixed focus day/night and doesn't have PTZ or any fancy features for that matter. so would it be safe to say that 1 Amp will do just fine even at a distance of 50m? sending 12V DC over 50 meters is not a good idea. 12V is not powerful enough to push current over such distance. I recommend that you take 220V as far as possible and use 12V adapter closer to the camera. Share this post Link to post Share on other sites
battouter 0 Posted October 28, 2014 sending 12V DC over 50 meters is not a good idea. 12V is not powerful enough to push current over such distance. I recommend that you take 220V as far as possible and use 12V adapter closer to the camera. very difficult to run a 220V line as it is an outdoor cam. any professionals in the field can confirm the voltage drop at 50m is that significant that is harmful to the cctv camera? Share this post Link to post Share on other sites
tomcctv 190 Posted October 28, 2014 sending 12V DC over 50 meters is not a good idea. 12V is not powerful enough to push current over such distance. I recommend that you take 220V as far as possible and use 12V adapter closer to the camera. very difficult to run a 220V line as it is an outdoor cam. any professionals in the field can confirm the voltage drop at 50m is that significant that is harmful to the cctv camera? Hi. 50m is not a problem for 12v ....... Does that no problem It's the amps that plays the part ........ 12v 2amp is not a problem for your half amp cameras ........ You can run two cameras that distance with no problems Share this post Link to post Share on other sites
battouter 0 Posted October 28, 2014 sending 12V DC over 50 meters is not a good idea. 12V is not powerful enough to push current over such distance. I recommend that you take 220V as far as possible and use 12V adapter closer to the camera. very difficult to run a 220V line as it is an outdoor cam. any professionals in the field can confirm the voltage drop at 50m is that significant that is harmful to the cctv camera? Hi. 50m is not a problem for 12v ....... Does that no problem It's the amps that plays the part ........ 12v 2amp is not a problem for your half amp cameras ........ You can run two cameras that distance with no problems specifically, what type of gauge (i don't know if that is the right term to use) of wire should i be using to avoid voltage drop at a distance of 50 meters? i assume i would need a special type of wiring for this purpose? people are suggesting to get the correct AWG for this. i don't have a clue what they are talking about. Share this post Link to post Share on other sites
battouter 0 Posted October 29, 2014 yet one of the technicians from our local shops is saying they had no problems with 50m cables and the cameras run despite the voltage drop. i don't even know what to think anymore. i know under volting power tools or any equipment that need a lot of power would definitely cause damage to them but does this hold true with cctv cameras that draws only 12v? Share this post Link to post Share on other sites
shockwave199 0 Posted October 29, 2014 Get this cable, use 12v 2amp power adapters for each of the three cameras. Before you run the cable for real, connect it all and see if you get picture, at night too. Just make sure in the dark room you're testing this at night that the ir comes on and you see a picture on your Dvr. Leave it that way for a night or two and make sure it's okay both day and night. When you're sure it is, run the cable where you need it and mount the cameras and that's it. You should be okay. It's not the best cable by any means, but it should be okay to get you going. http://www.amazon.com/VideoSecu-Pre-made-Security-Surveillance-Installation/dp/B0017KZ8Y0/ref=sr_1_5?s=electronics&ie=UTF8&qid=1414573075&sr=1-5&keywords=150+Ft+RG59+Black+Siamese+Cable Share this post Link to post Share on other sites
