> -----Original Message----- > From: tclug-list-bounces at mn-linux.org > [mailto:tclug-list-bounces at mn-linux.org]On Behalf Of Chad Walstrom > Sent: Wednesday, March 15, 2006 12:08 PM > To: tclug-list at mn-linux.org > Subject: Re: [tclug-list] WANTED: Cat 5e cable > > > > I believe the 1000' spools you're speaking of are actually riser > > cable. Plenum cable is much more expensive, usually in the > > neighborhood of $170-$190 for 1000'. If I missed some special clue > > me in and I'll go stock up though. > > I could be mistaken, but IIRC you only need plenum if the cable is > going to be in an open space, such as in a cable tray above acoustic > tiles. If the cable is going to be in the space between sheet-rocked > or plaster walls or in conduit, you don't need plenum. Plenum cable is required when the cable is in a heating/AC duct aka plenum. I think it is also required when in a duct that also has vent pipes for water heaters, etc which might get hot. The plenum type of cable has a "less toxic" smoke from its insulation when it burns so it doesn't spread poison gas through the AC system of the house. Chuck