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The Bull

Cat 5 cord life

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just wonerding how long cat 5 cord last I have some inside and seems to be breaking apart any ideas or better way to protect them?

thank you Bull 

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Not all Cat5 is created equal, here is what I use for my outdoor display in a harsh northern environment. The whole key to this is "outdoor" and "sunlight resistant" which means that the cable jacket contains UV light inhibitors that prevent it from decomposing and getting crispy. Also this cable has a tougher jacket that performs much better in the cold. BTW It's the same thing for zip ties, the white nylon ones crumble after years in direct sunlight while the black UV resistant ones don't. Here's some of what's printed on the cable:

7923A  Belden VERIFIED (UL) CAT5e 4PR24 E-108998-M CMR-CMX OUTDOOR OR C(UL) CMG---ISO/IEC 11801 CAT5e--P-07-KA060003---300V PATENTED OIL/SUN RES FT4 IEEE

981907163_beldencat5eoutdoor1.thumb.JPG.35e0e3aa61177d2606ac13ddde435450.JPG1854180994_beldencat5eoutdoor2.thumb.JPG.f68b4b906e1caeb71320c8db2e7e7160.JPG

 

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I run my CAT 5 cable in its own runs away from any 120/240 cables and away from the hot water lines in my house. The key is not to have a close parallel to either. At my old house the CAT5 failed due to it running in the same holes as the hot water line. It cooked the outside of the cable and the wires failed. At a few work site I had a bunch of squares get into the house cable tray and ate the CAT 5 cable. I have also seen same thing with rats /raccoons/ possum. I think CAT5 cable for me last about 15-20 years max. 

Edited by Scott Rob

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23 hours ago, The Bull said:

just wonerding how long cat 5 cord last I have some inside and seems to be breaking apart any ideas or better way to protect them?

thank you Bull 

One of the most important aspects of network cable is whether it is solid core or stranded core.  Solid core wire is meant to be installed in a permanent fashion and left alone.  If you use solid core network cable to make patch cords and you coil them up and uncoil them repeatedly (like every season for use in a display) they will eventually fail.  The reason is that solid core wire is not very flexible.  When you repeatedly bend the cable the 8 little solid wires inside start to break.  Frequently the cable will look just fine on the outside even when one or more of the wires inside are broken.  You may not know there is a problem until you start getting weird intermittent errors.  When there is a break in one or more of the wires inside the cable may work part of the time and then drop part of the time especially if there is any movement.  A proper patch cord is made of stranded wire that is very flexible.  There was a time when it was a lot cheaper to make your own patch cables however the price of factory made patch cables is so low now that it really makes no sense at all to make your own.  I find that the best prices are usually at Monoprice.com.

TED

17 hours ago, Scott Rob said:

At a few work site I had a bunch of squares get into the house cable tray and ate the CAT 5 cable. I have also seen same thing with rats /raccoons/ possum. I think CAT5 cable for me last about 15-20 years max. 

Yep you sure gotta watch those SQUARES.  Being uncool is very bad for networks and network cables!

TED

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The auto correct on my phone is not my friend?. It should have been “squirrel”  and not square.

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Ted is right... "One of the most important aspects of network cable is whether it is solid core or stranded core."

The Belden 7923A that I am using is indeed solid conductor. It was the best stuff that I could find at the time and I haven't had any problems with it so far. I am always super careful not to put any sharp bends or kinks in it,  just like I treat coax cable as I know what it does to bandwidth and VSWR (in coax). That being said, Belden does manufacture a stranded conductor version 7924A data tuff 5e. which should be better for portable use. FYI the installation temperature of both these cables is -25c to +75c and the operating temp range is -40c to +75c. (-40 degrees Fahrenheit  to +167 degrees Fahrenheit) It does occasionally get almost this cold up here in the north where I live, and yes, we too have those squeaky squirrel wascal rodents that love to destroy stuff.

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On 1/8/2019 at 10:00 AM, Scott Rob said:

The auto correct on my phone is not my friend?. It should have been “squirrel”  and not square.

or you can say the square and compass lol, ya auto correct is not the best firend on my phone too, thank you ted 

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