Plenum rated cable is designed to be run in return air ducts or in the
air space above ceilings or under raised floors. I believe the rating
is for fire purposes, it won't outgas hazardous chemicals into the
'airspace' in case of a fire. 10Base-T is 10MB ethernet over twisted
pairs, i.e. CAT-5 rated cable.
The plenum rating has nothing to do with UV resistance.
73, Bill N2BC
K8RI on Tower talk wrote:
>Couple of things I need clarifying.
>What is plenum rated cable? I worked in industry for years, but have been
>retired for over 7, and never heard the term used. We used thhn and other
>cables in cable trays and conduit.
>
>
>
>
>>I don't have any experience with plenum rated coax but I do have experience
>>with plenum rated 10baseT cabling and that stuff won't last but a couple
>>of
>>
>>
>
>Nor have I heard of any base T cabling. I use Cat5e used for a gigabit
>netork and lots of it. Like many cables it has to meet a spec for handleing
>signals.The mechanical quality of Cat5e cable varies widely. I have one
>piece that has been just laying on the ground now for a couple of yerars
>with no noticable deteoriation.
>
>
>
>>months exposed to the sun. For 10baseT they make a special outdoor
>>version
>>with a black UV resistant covering that's also plenum.
>>
>>
>
>I have red, gray, and blue in the 1000' auto feed boxes. They all seem to do
>well, but like most Cat5e cables they do not like short radius bends which
>can make it a bit difficult to get into conduit.
>
>Roger Halstead (K8RI and ARRL 40 year Life Member)
>N833R - World's oldest Debonair CD-2
>www.rogerhalstead.com
>
>
>>Matt
>>----- Original Message -----
>>From: "Doug Rehman" <rehman@surveil.com>
>>To: <towertalk@contesting.com>
>>Sent: Wednesday, June 21, 2006 10:36 AM
>>Subject: [TowerTalk] Using Plenum Plenum Cable
>>
>>
>>
>>
>>>Does anyone have any experience with plenum rated cable being used
>>>outdoors?
>>>I'm curious if the white outer sheath will stand up to the outdoor
>>>elements,
>>>especially UV, or if it will harden and crack.
>>>
>>>Tnx
>>>Doug
>>>K4DDR
>>>
>>>
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>>>
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>>
>
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