How to Cable a CCTV surveillance Camera Power Supply

How to Cable a CCTV surveillance Camera Power Supply


What’s going on guys? I’m Mercy with Discount-Low-Voltage.com. Today we’re going to talk about security camera power supplies. Which one’s best for your camera? We’re also going to wire one of these up. We’re going to show you how to do it. Let’s get to it.
We have a few different power supplies here. We have the small 12 volt. We have the larger 24 volt, and we have the master distribution unit. We’ll crack this open here in a second. We have a couple cameras.
You always want to make sure with whatever camera you select you match your power supply to the camera you’re using. This one here is a 12 volt so we’re going to use a 12 volt power supply. The other ones, actually some cameras like this one here, it’s a dual voltage so it’ll do 12 and 24. Why would you consider paying more money for the 24 volt power supply? Sometimes there’s certain camera lens where they’re really long. I’d say security camera RG59 with power, typically about 200 meters, is a good ballpark range to where you’re going to get signal to your camera with no issues. Anything further than that you might want to roll with the 24 volt to help give it that extra power so you don’t have any issues with the IR’s lighting up properly and getting a proper image on the screen.
If you’re using individual cameras the 12 volt, remember match up the power of your camera. This is probably the way you want to go. These are definitely most commonly sold in residential-type applications. The cable on the other end, it’s just for your power, but you may need to purchase a separate pigtail to line it up with the power.
On the the other end of the pigtail you have your two conductors there where you can go ahead and make your splice to your coax cable that, and your 18 too, that we’ll go ahead and get to in just a moment.
This is definitely more common with residential installs. It’s a slim style so that way if you do want to extend more, install more cameras you can go ahead and put more of these on a power strip instead of taking up a lot of room.
There is also the 24 volt power supply. Typically this cost a bit more. You want to go ahead and just plug it into your power strip or outlet. It is wired a little differently from brand to brand and what type, but you pretty much get the picture. These are definitely more commonly sold with individual cameras. If you need one or two cameras this is probably the route to go. If you have a install, commercial install or residential install, you’re going to want to use the master module.
Let’s get a better look at the power supply. This is a master power supply. They’re also available in a four and a 16 and an 18. This is actually a nine. Some of the things you might want to look for is, for example, a knockouts. This one here we got three on the top. You also have them on the side, got here on the bottom, and you also actually have it in the middle of the unit right behind, so you knock that out and run your cable, power cable in through the drywall.
As we open it up, inside of it you got your fuses there. What that does, in case there’s ever a power surge or a power issue at your job site or at your residential installation, one of the fuses, they’ll pop or they’ll go out. You’ll have to replace it instead of replacing possibly your security camera. That’s a nice little feature. We got the screw terminals there. You got your positive and you got your negative here. You can tell the negative right underneath the wire there. We’re going to talk about the power cable for security cameras. There’s a couple of different ways to go about it. We have the Siamese cable which is the RG59 with the 18-2 attached to it. This is very popular and you’re going to want to use this when you have the option of having your power supply next to your DVR.
Sometimes with certain DVRs that are rack-mountable, some of these installs you’re going to want to lock them down in a telecommunication closet on a rack or you might lock it down somewhere else that’s kind of hidden so nobody can mess with the footage that’s recorded. You might need to run your power separately. If you go that route you’re going to want to use what’s commonly installed is the 18-2 just by itself. Run that for your power to a separate location. You’re going to run a separate RG59 cable for your signal back to the DVR. You’re going to have two separate cables, two separate home runs for that type of installation, that type of setup but this is basically it. Don’t forget to checkout our YouTube channel for how-tos on terminating coaxial cable. Let’s get back to the product. Now that we’ve unscrewed the screw terminals for your power supply, we’re going to use one channel and one channel per camera. We have our cable, our 18-2. This is a Siamese cable. Don’t forget if you’re running Siamese you can go ahead and split the cable just like that and run your signal to the DVR. We’re just focusing on the power. We’re just going to run the positive into the positive, the negative into the negative, screw it down and we’re good to go. Let’s over what we just went over. Match the camera power needs to correct power supply. Power either a 12 or 24 volt. Keep in mind some cameras are dual voltage. Power supplies are individual per camera or multi-channel for multiple cameras. Multi-channel helps keep the wiring and installation neat and organized. Power cable used is an 18 gauge 2 conductor. Power signal is around 1,000 feet. The power signal, 1,000 feet, that’s a pretty good rule of thumb that’s out there on the market. Even though the RG59 coaxial signal is about 500 feet, so you’re probably not going to have an issue with power. It’s really going to depend. It’s one of them things you might need to play with, but it’s not a very common occurrence at your install, so it’s probably not a big deal. You’re probably not going to bump into it. The two conductor cable, very easy to wire. Anybody can do it. You guys got it. You can order all this stuff online. If you have any questions call us. Number here is 888-797-3697.

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19 Replies to “How to Cable a CCTV surveillance Camera Power Supply”

  1. Thanks fir the video Mercy. I'm going going to run 18/2 and RG6 seperate. Mostly because I can't find a bulk roll of siamese RG6 unless its way too much like 1000ft. But anyway my question is, After going to the DVR whats the best way to view the video? I would like multiple rooms to view the cameras, but afraid of quality loss with splitters?

  2. hi mr salinas. I installed a lorex camera system with 8channel. and i was wondering why all my cameras have this fuzz on the video, also  i get ghostly images as if it was trying to transmit some other image. my cameras are 720p high definition with Night Vision but am not even getting close to standard definition on them. Subscribed!

  3. HELP! CCTV camera problem, http://youtu.be/g1kdpAz7R_k – Anyone knows what is causing this image flickering? The cabling used is Siamese. It shows this way with a 18 Channel 12V power distribution box, tried replacing it using pigtails to a power adapter and same issue. Used individual power supplies, same issue. One thing I tried and worked was using a PC power supply where I jumped wires to be able to get power from each molex using the yellow and black wire and cameras show clean. However, does not work with the regular power supply or adapter. The one camera that is showing clean uses Cat5, so its not an issue. Can it be a power problem, ground loop. what. Also tried using another DVR same issue. Tried this same DVR at another location and works perfect. Remember it works well with a PC power supply even if I connect all power wires using one power wire from the molex connector. Need this fix for a customer. Thanks in advance.

  4. Hello sire, please i have a question and I need your help,
    I have a mini cctv camera with 3 connectors calbe but I don't know wher is +,- and video signal I losed the cable

  5. +Mercy Salinas We purchased a new home and it had a box with cables we were told were for security cameras. Where does those go and how can we use them? Thank you

  6. this is awesome, I have this as a work assignment tomorrow and had NO clue! I was thinking like DVR like for home with a HDD. Glad I researched and know what I'm actually getting in to. Thank You

  7. hi mercy if you could just help me, would appreciate it much, i have a camera running for as long as 267Meters about 8 of them, what would you suggest to wire this up, thanks

  8. Hello…I have 16 cameras bt using 12v power supply it showing lines on the screen(monitor display) and m using 6mm ,8mm lon distance cameras approx 40 to 60m long from the DVR …Please suggest best solution for that

  9. Use fluke.meter connect your cameras and it will show u that votage for each cam is less then 12v so how hell can he talk about this set up 16 cam in this power supply box and show us the fotage on 16 cams i awaite.

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