[ale] Wireless Design Suggestions

[James P. Kinney III]

Correct. Running non-plenum rated cable in a commercial HVAC supply
system is a serious problem. But running non-plenum rated cable a
residential air return duct is not a problem. As the temperature of the
duct will never be above that of the average room temperature, it is not
a safety problem. It is NOT a good idea to run a cable in a supply duct.
The temperature of the heated air near the furnace will exceed the
off-gas temperature of all non-plenum rated cable jackets.  But If it is
necessary, Home Depot does carry the plenum-rated cable. And it is about
3x the cost of non-plenum cable. So $0.15/ft vs. $0.05/ft. 

On Tue, 2002-12-31 at 18:10, Joe Steele wrote:
> Just remember that air movement can greatly accelerate the spread of 
> fire and smoke, so anything you run through an air duct should be 
> fire-resistant and have low-smoke-producing characteristics.  For 
> this reason, the NEC says that communication cables installed in air 
> ducts and plenums must be of a special type (which costs roughly 
> three times what regular cable costs).
> 
> --Joe
> 
> 
> On Tuesday, December 31, 2002 1:13 PM, James P. Kinney III wrote:
> > A cold air return duct can make a fairly easy chase. Use a small balloon
> > and a long piece of very light string and have the blower running. It
> > will pull the balloon through. A small hole, pop the balloon and snare
> > the string and use it to pull the cable.
> 
> _______________________________________________
> Ale mailing list
> Ale at ale.org
> http://www.ale.org/mailman/listinfo/ale
-- 
James P. Kinney III   \Changing the mobile computing world/
President and CEO      \          one Linux user         /
Local Net Solutions,LLC \           at a time.          /
770-493-8244             \.___________________________./

GPG ID: 829C6CA7 James P. Kinney III (M.S. Physics) <jkinney at localnetsolutions.com>
Fingerprint = 3C9E 6366 54FC A3FE BA4D 0659 6190 ADC3 829C 6CA7 



 This is a digitally signed message part