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Cat5e home use speed same as Cat6 but different durability or shielding?


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#1 woonlem

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Posted 07 December 2015 - 02:29 PM

I searched the forum for threads about Cat6 vs Cat5e for home use and am seeing different advice. Some people say that there is no reason to use Cat5e because it's rated at 1-Gigabit which is the most you will use for a home network. But I understand that using twisted pair cabling has the benefit of improving protection against interference (even if the cable is "unshielded"; source: http://store.dynacable.com/network-cable-faqs/) and that Cat6 has more twists in terms of the construction, so that is why it has more protection against interference. So some people said that if you're not using 1000s of feet of cable for a large infrastructure but just talking about buying a few of them then the price difference between Cat5 and Cat6 is negligible and you're better off using Cat6 due to the improved protection against interference. Would having more twists also affect the proneness of the cable to breaking or degrading? Just curious if one of them is more durable. 



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#2 mjd420nova

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Posted 07 December 2015 - 02:40 PM

In a home installation, with runs normally under thirty feet, the CAT5e will work as well as Cat6.  In my experience, cable with more twists per foot will be more prone to tangling and kinking when not properly dressed.  In commercial installs, cables are run along with power lines, and across false ceilings around lighting panels, they can require more shielding, not added twists in the lines.



#3 woonlem

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Posted 07 December 2015 - 02:43 PM

Thanks, what do you mean by "properly dressed" cable? 



#4 Wand3r3r

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Posted 07 December 2015 - 05:35 PM

Ethernet standard is 100 meters or 328 feet max length before having to use a repeater.

No good cable installer runs network cables with power.  Doing so requires shielded/grounded cable which more expensive.  Everyone keeps them apart by at least 6" depending on amps of the electrical.

 

"Cat6 due to the improved protection against interference"

 

I take that statement to say outside interference.  This is not the case.  It's internal to the wires/single cable that is where the interference comes from due to the currents on them which create magnetic/electronic fields.  The twists between pairs [4 pairs to a cable] is done to "balance" or as best be cancel out that magnetism/electronic signal.

 

This is why you need shielded cable if you are forced to wire near heavy electrical appliances which create magnetic fields that cause interference with the cable signal.

 

There is no difference between 5e and 6 concerning interference or durability.  Only real difference is cat5e can go gig but 6 can do 10gig


Edited by Wand3r3r, 07 December 2015 - 05:38 PM.


#5 woonlem

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Posted 08 December 2015 - 11:34 AM

Interesting, I hadn't realized the distinction between internal and external types of electrical interference, and the twisted-pair construction of the cable only protecting against the internal type. But that makes sense. Thanks for clarifying.



#6 woonlem

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Posted 15 December 2015 - 11:42 AM

Can anyone explain what mjd420nova meant by "properly dressed cable"? Is he talking about insulation?



#7 Wand3r3r

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Posted 16 December 2015 - 06:33 PM

No idea but not insulation.  You mean shielding as in STP [shielded twisted pair]






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