Alternative set-up for CCTV power supply

[hooverdale]

The standard set-up for CCTV power supply if you have several sets of cameras is to have a centralized 12V supply and have it distributed to all the cameras.

Or for a single camera you can plug its 12V cctv power adapter to 220V outlet.

I was thinking, is it advisable to just wire several power outlets; lets say 50 power outlets in one circuit and plug the individual 12V cctv power adapter? I know it exceeds the maximum number of outlets per circuit but considering a camera as load seems to be too small. If so, this can save considerable amount of wires to be used.

 

[itsmoked]

That would be fairly Draconian. Better would be a couple of larger 12V supplies distributed on some terminal blocks that you hook to the individual cameras.

Keith Cress
kcress -

http://www.flaminsystems.com

 

[SceneryDriver]

How about using one of these:

http://www.automationdirect.com/adc...INO_PS,_PSB,_PSC,_PSM,_PSP_Series)/PSM12-156S

Make sure each "branch circuit" to each camera is protected appropriately through the use of a breaker or fuse.



SceneryDriver

 

[wayne440]

If the cameras are using coax cable for video, it is easy to put the 12V on that cable as well.

 

[PHovnanian]

Consider the cost of the hardware needed for your 220V branch circuit compared to the equipment and hardware needed to distribute low energy 12 Vdc. There is probably a optimum economic point involving a few larger 220-12 V supplies with local 12 V distribution to several cameras per supply.

Consider the change in code requirements when a single 12 V supply becomes large enough to exceed your local codes definition of "low energy" and the more expensive wiring and protection needed.

In the final analysis, don't violate codes. Or the actual cost of your system might be the insurance companies refusal to pay out when it catches fire.