Kitz Forum

Broadband Related => Broadband Hardware => Topic started by: Bowdon on December 11, 2020, 01:51:03 PM

Title: Are Most Ethernet Cables Capable of Doing POE?
Post by: Bowdon on December 11, 2020, 01:51:03 PM

I recently bought a cat6 ethernet cable for my network. But this morning one of my cameras stopped working on the nvr cctv unit. I'm trying to figure out if its either the port on the unit that is faulty, the cable, or the camera itself.

Luckily the camera that as stopped working is reachable from the floor. So I'm thinking of disconnecting it from its current ethernet cable (this cable came with the nvr box and is said to be poe) and temporarily connect the cat6 ethernet cable up from the box to the camera just to see if the current cable as gone wrong. Will this work?

This is the ethernet cable I'm thinking of using: https://www.amazon.co.uk/gp/product/B00N2VIALK/ (https://www.amazon.co.uk/gp/product/B00N2VIALK/)

Or will I need to buy a different ethernet cable for it to work?

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: Weaver on December 11, 2020, 02:32:16 PM

No, should be fine.

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: hushcoden on December 11, 2020, 06:08:56 PM

For PoE I'd go for solid copper conductor cables and avoid copper clad aluminium cables.

Have a read here: https://www.truecable.com/blogs/cable-academy/the-power-of-poe

and here: https://www.truecable.com/blogs/cable-academy/copper-clad-aluminum-vs-copper-fluke-test

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: burakkucat on December 11, 2020, 06:15:36 PM

Quote from: hushcoden on December 11, 2020, 06:08:56 PM

For PoE I'd go for solid copper conductor cables . . .

For structural cabling, yes. But, in this case, it is a patch cable and, thus, should consist of stranded wires for the required flexibility.

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: Bowdon on December 11, 2020, 09:09:53 PM

I thought I'd fixed the camera earlier as I did a camera reset and scanned it on the box and it re-appeared. But later it went off again. I suspect its the camera that is faulty, but I'll still do the ethernet test tomorrow as I'll need to remove the camera anyways.

Thanks for the advice guys. Even though I've been around computers most of my life some of the products are either very specific or very broad in definition. It's good to get a little guidance to make sure  :)

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: Weaver on December 11, 2020, 09:44:42 PM

I’ve done PoE to WAPs before with no problem.

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: Bowdon on July 10, 2021, 01:10:07 PM

Either the camera or the poe cable I suspect as broke since I made this post.

I'm trying to figure out if its the camera that as broken or if its getting power over the ethernet cable i.e. is the box not providing enough power etc.

I was wondering, is there a device that can connect to the ethernet cable that will tell me if power is coming through?

Title: Re: Are Most Ethernet Cables Capable of Doing POE?
Post by: aesmith on July 14, 2021, 09:14:16 AM

This looks a handy wee device ..
https://www.wifi-stock.co.uk/details/ws-poe-tester.html
Or more basic
https://www.amazon.co.uk/POE-Detector-identifies-Ethernet-switches-injectors/dp/B077Y7VFWD/ref=dp_prsubs_1?pd_rd_i=B077Y7VFWD&psc=1

Depending on your gear your PoE may be using the non-Ethernet pairs, meaning you could have cable faults that affect PoE only.

We've seen a number of cable faults affecting PoE over the years, but actually never needed to use a specific tester as the faults have always been resolved by visual inspection, normal cable tester and appropriate re-work.