expired Posted by Blue_Ranger • Sep 21, 2023
Sep 21, 2023 7:19 PM
Item 1 of 5
Item 1 of 5
expired Posted by Blue_Ranger • Sep 21, 2023
Sep 21, 2023 7:19 PM
30' Amazon Basics Flat RJ45 Cat 7 Ethernet Patch Cable w/ 15 Nail Clips (White)
$3.05
$13
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Thats pretty thin. Should be 22 or 23 for quality Cat7.
If you need a long, flat ethernet cable this should be an acceptable option. If you're actually seeking a good Cat7 option you'd do better with something else.
Good luck!
Jon
no noticeable difference between my solid copper cat 6 when using for IP cameras
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This cable would work fine for a POE camera.
It might surprise you to know, 99% of people here have never seen, used, or owned a shielded ethernet cable of any kind. They are called "STP" or "shielded twisted pair" and have foil inside the jacket. They are rare and are used mostly in commercial installations with heavy megaton construction machinery that you don't have in your house.
All the ethernet cables you've used are "UTP" or "unshielded twisted pair". They just have insulation (which is NOT shielding).
How can a flat cable be twisted pair.
Bigger issue it's not UL listed for in wall install and even if it was there are levels of wire insulation for in wall install. Because if a fire starts in one place you don't want it spreading via the jacket burning. So. I definitely wouldn't especially if going through the attic.
Good CAT5... or 7 whatevser from monoprice or elsewhere is not THAT expensive
https://www.google.com/search?cli...Q3
No.
Wires are super thin, thus not intended for PoE / Power over Ethernet.
For PoE you want to go with 23 or 24 AWG cat5e / 6, copper wires not CCA wires ..
If you are running wires in the attic or in-wall look for a cable which is properly rated for in-wall.
also, claiming this to be cat7 certainly is a "stretch" of imagination .. I would even call this a fraudulent description.
note: thinner wires = more resistance, less power can be carried on it, heats up more .. this is why you have minimum AWG gauge for electric wires depending on watts carried ..
ref:
https://www.engineering
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update:
What is the relationship between power and resistance and constant voltage?
( I=V/R ) and ( P=VI) gives (P=V*V/R) as voltage is constant so (Power is inversely proportional to resistance) or (1/R)
update:
Copper-clad aluminum (CCA) conductors have a resistance that is 55-60% higher than copper. If the resistance is not compensated, the voltage drop will be greater for any channel length. CCA is also weaker than pure copper and oxidizes easily
and
https://www.truecable.c
update:
What is the relationship between power and resistance and constant voltage?
( I=V/R ) and ( P=VI) gives (P=V*V/R) as voltage is constant so (Power is inversely proportional to resistance) or (1/R)
CCA is problematic .. if you read anything in this thread you'd know we're talking about aluminum being more brittle and thus more likely to break.
update:
Copper-clad aluminum (CCA) conductors have a resistance that is 55-60% higher than copper. If the resistance is not compensated, the voltage drop will be greater for any channel length. CCA is also weaker than pure copper and oxidizes easily
and
https://www.truecable.com/blogs/c...fluke-test [truecable.com]
And, regarding CCA, I wasn't speaking about embrittlement, I was speaking about suitability for signal quality and was just adding information about impacts the cable. As you know it's far more complex than resistance at hundreds of MHz.
It was pretty clear from all the comments that there isn't a general understanding of insertion loss, frequency dependent impedance, or skin effect (rather just wire gauge, and resistance). Again just adding info for education and completing the picture.
Thanks for the truecable comparison. The Fluke data is pretty informative!!
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