On Jun 21, 2006, at 10:55 AM, 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.
>
Plenum-rated cables have a fire-retardant outer jacket for use in
plenums (spaces in buildings used for air circulation).
73 - Bob, N7XY
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