[AusNOG] Cable length limits?

Damian Guppy the.damo at gmail.com
Tue Mar 4 22:00:19 EST 2014

>From a laws of physics point of view it makes sense. As temperature of
a conductor increases so does its resistance. As to what effect that
translates into in the real world with regards to network cabeling im
not to sure.


Sent from my Windows Phone From: Paul Gear
Sent: 4/03/2014 6:53 PM
To: ausnog at lists.ausnog.net
Subject: [AusNOG] Cable length limits?
Hi all,

I'm working on a project involving a new facility being built in
Townsville.  A consultant on the project mentioned to me today that he
had heard some discussions which suggested that the maximum distance of
90m on a Cat5e/Cat6 run applies to environments where the ambient
temperature is around 20 degrees, and that higher temperatures can
actually require lower length limits.

Can anyone confirm or deny, and/or point to some relevant references?
Google seems to have some relevant hits, but discerning the wheat from
the chaff is tricky - many of the first few hits for the searches I did
were from companies trying to sell higher grade cabling.

Thanks in advance,

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