Question regarding Home Security camera and wiring?

I’ve run cat5 cable throughout the house, which i thought I could use to connect security cameras. I don’t need anything fancy (no recording) i just want to be able to use a switcher with a couple of cameras to view who’s at the front door from my TV.

http://www.radiolocman.com/electrical-engineering/circuit-cache.html?di=18899
This is a very handy place for figuring what size wire can handle what amount of current depending on frequency of signal being sent. If your cameras are analog they could need a couple of amps. Basically a CAT5 cable uses 24 gauge solid core wire. I have run 2 Amps across them with no problem, but the current vs wire gauge table puts 24 ga at 1.4 Amps rating. If the camera is digital, then you shouldn’t have a problem as most I have seen use about 500 milli amps to run, including infrared cameras.

Knowing the specific camera you have in mind, look up the power requirements, and if the power needs are under 1.4 Amps. I’d say you could at least try it. I personally like to double my wire gauge for current requirements. Safety factor of 2 is best. Good luck.

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