Camera needed voltage

F

Faresoyam

n3wb
Dec 25, 2019
22
0
Palestine
Is it okay to give cameras 13.5v constantly?
When it was 12v in the night some cameras turned off and other got some abnormal lines now when i made it 13.5v they are fine in the night but will this harm the cameras?
Thanks in advance for reading this.
 
Faresoyam said:
Is it okay to give cameras 13.5v constantly?
When it was 12v in the night some cameras turned off and other got some abnormal lines now when i made it 13.5v they are fine in the night but will this harm the cameras?
Thanks in advance for reading this.
Click to expand...
Are these analog cameras or IP cameras?
How close to the camera(s) is the 12v power supply?
Is it possible that, depending on the length and gauge of the power conductor, that you are getting too much voltage drop and boosting it to 13.5 at the source it then drops to 12v at the load end?
 
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TonyR said:
Are these analog cameras or IP cameras?
How close to the camera(s) is the 12v power supply?
Is it possible that, depending on the length and gauge of the power conductor, that you are getting too much voltage drop and boosting it to 13.5 at the source it then drops to 12v at the load end?
Click to expand...
There are analog and ip cameras and there is cameras cable from 10m to 300m
 
Faresoyam said:
There are analog and ip cameras and there is cameras cable from 10m to 300m
Click to expand...
Imagine if you just arrived at this thread and read your first post and then my questions...and then you read your answer above...
Could YOU offer any meaningful advice ?
 
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TonyR said:
Imagine if you just arrived at this thread and read your first post and then my questions...and then you read your answer above...
Could YOU offer any meaningful advice ?
Click to expand...
I have a central power supply (its 30 ampree) all the cameras take the power from the same adapter i have 9 cameras.
I just want to know if the 13.5v cause any harm to cameras in the long run everything is fine now.
When it was 12v the cameras that are far from the power supply had problems.
 
Have you measured the voltage at the camera(s) at the furthest (longest) point with the load connected?
 
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Faresoyam said:
I think its about 12v but my concern is about the one with 20 meter long cable the 13.5v will it void the camera
Click to expand...
A good question but one that I cannot answer.
IMO, a bigger question is:
If you're getting that much drop on the longest cable can you run a larger gauge cable for the power? It could be #14 stranded copper all by itself, the cam doesn't care. Those conductors in those twin "Siamese" (video + power) cables are VERY small (26 AWG ?) in cross section.

Calculator.net shows #14 AWG will carry 1/4 amps for 20m/66 ft. and barely drop the voltage. Try the calculator with various lengths and actual current numbers to determine what will provide less than 5% voltage drop.


12VDC_66ft_No26.jpg 12VDC_66ft_No14.jpg
 
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