reason for plenum ratings -- Re: [TriLUG] OT: looking for "red" plenum zip ties

[David Rasch]

On Thu, May 13, 2004 at 02:16:29PM -0400, Jeremy Portzer <jeremyp at pobox.com> wrote:
> Plenum-rated cables are made of Teflon or other plastics that don't
> release  chlorine gas.  Teflon can burn, though -- but burning isn't the
> main concern, it's the chlorine.  Teflon is a lot more expensive than
> PVC, hence the higher cost of plenum-rated cables and zip ties.

Just to split a hair in an otherwise accurate contribution, typically
plenum cables have a Teflon coating to make them fire-retardant and
avoid the release of toxic gasses except in very high temperature fires.
You can read more about plenum cable at webopedia:
http://www.webopedia.com/TERM/P/plenum_cable.html

David
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