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I'm trying to install security cameras around my house. My problem comes when I try to find power for the locations I want to monitor. I have one camera mounted already, but it is 25 feet away from the nearest outdoor outlet. I was just going to use an extension cord to run power closer, but heard that this is not a safe thing to do.

The camera is the Zmodo 720p outdoor (https://www.zmodo.com/720p-outdoor-wifi-camera/).

It comes with a 5V 1A adapter with a micro usb on the end to power the camera since data is sent over wifi. I was thinking of using a usb extension, but found out that power can only travel about 16 feet over usb.

That leaves my last option which is POE. I hear most people use it for both power and data, but I only want to use it for power. Would it be possible to get a POE switch, plug it in to the outside outlet, and run ethernet cables to each of the cameras without worrying about data? Can power travel 25 feet over ethernet?

Is there any better way to get 5V to the camera?

Thanks

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    power can travel 25' on USB, so long as the cables are not pure crap; the 16' USB spec limit is how far 480Mbps data can travel unimpeded. you can also use speaker wire (cheap 18awg should do) to run the DC from the adapter to the camera, outside; it's safe because it's low voltage... – dandavis Mar 16 '18 at 23:29
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    Be super careful with voltage drop on 5v circuits, just using any random light cable may result in a rude surprise. You can always use #14, bulk manufacturing makes it cheap. I tried to find 600V wire for use in fluorescent lights, and the #18 is more expensive than #14 THHN. wth... – Harper Mar 17 '18 at 2:55
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I don't believe you need to spend the big bucks for POE, as your requirements are straightforward. If you would install CATx cable for POE, you can easily enough install a pair of wires and add a micro usb pigtail at the camera end. Even though you are running only 5V, to reduce voltage drop, consider to run something as large as 16 gauge wire to the pigtail. Ensure that you provide correct polarity on the added wiring, of course.

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this is how PoE is usually used (picture below)

the PoE injector feeds around 50VDC into the cable

in your case you could also use the ethernet cable to carry power

connect a 12V power supply at one end

use an automobile USB charger adapter at the other end to power the camera

enter image description here

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I've done this before with Dlink cameras. Cat 5 cable will have 4 twisted pairs. Two are used for data and the other two for other things. I used one pair for positive and one pair for neg. I simply cut the power cable and spliced in the source somewhere near the router and spliced in the termination end right at the camera. So all that ran to the camera was the cat 5 cable. I used zoneminder for 4 camera this way. Ghetto POE, but it works.

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