Cctv Power Query

[JasonOfOz]

Thanks everyone.

 

Great advice, particularly about the AC.

 

And you are right that the Samsung Bullets come AC/DC so that's good news.

 

 

I'll be sure never to use CCA in future and just stick to good old fashioned copper.

 

 

So can anyone answer my question about the correct use of the pairs for power?

 

This is what is in place currently:

 - 1 pair for +ve DC
 - 2 pair for -ve DC

 

I have since been told that this may be better:

 - 2 pair for +ve DC
 - 1 pair for -ve DC

 

I would have thought that you would split all cables evenly:

 - 1.5 pair for +ve DC
 - 1.5 pair for -ve DC

 

 

Can anyone explain why one option might be better than the others? (I'm getting a lot of "this is how we do it, but don't know why it works" - so wouldn't mind a little more explanation.

 

Thanks

[james.wilson]

Id go for the last option

[Rulland]

As James, what goes in should come out.

[mecsecurity]

Analog CCTV cameras use coaxial cables, especially the Siamese cable for the wiring. Their videos are recorded via a DVR, which is a Digital Video Recorder where every single camera in a building is connected to the DVR.

Once the system is properly wired and installed, it uses a distinctive mechanism for capturing videos.

[al-yeti]

3 hours ago, mecsecurity said:

Analog CCTV cameras use coaxial cables, especially the Siamese cable for the wiring. Their videos are recorded via a DVR, which is a Digital Video Recorder where every single camera in a building is connected to the DVR.

Once the system is properly wired and installed, it uses a distinctive mechanism for capturing videos.

Odd that , many use cat5 for analog aswell 

 

What you on about dude ? Or what's point