I might add that the space above a drop ceiling or below a raised floor is only a plenum if these areas are used as part of the distribution system or return air for the HVAC System. Studies a few years ago determined that the products produced by burning the plenum rated cable were actually worse than non plenum rated cable. Go figure.
Richard Owen - Assistant Vice President Architect / Prof. Planner NJM Insurance Company 301 Sullivan Way West Trenton, NJ 08628 609-883-1300 ext. 7900 [email protected] ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Javier Valencia Sent: Monday, October 05, 2009 12:46 PM To: RBASE-L Mailing List Subject: [RBASE-L] - RE: Off topic Network Q I might also add that many local codes require that plenum rated cabling be used when the cables are run through a plenum. Plenum is normally the space above a suspended ceiling or below a raised floor. Plenum cable is more resistant to fire and does not emit toxic fumes when exposed to high heat. Because of these requirements, plenum rated cable it is more expensive and stiffer than regular cable and hence many installers prefer not use it. Local codes should be checked to avoid future re-installation and/or potential liability. Javier, Javier Valencia 913-915-3137 ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Monday, October 05, 2009 9:15 AM To: RBASE-L Mailing List Subject: [RBASE-L] - RE: Off topic Network Q http://svconline.com/connectedhome/homeoffice/installing_100mbps_home_ne twork/ Here is a nice article... You should consider several factors when determining how each cable run will get from point to point. Avoid running cable near electrical wiring. If you must cross electrical wiring, make the network cable cross perpendicular to the wiring to minimize crosstalk and interference, which degrade network performance. Route Cat 5 cables several feet away from fluorescent lighting fixtures where possible for the same reason. Secure cables with wire hangers, wire ties, or wire staples. If you buy a rack to hold the hub and patch panel, use wire ties to bind cables to the rack and relieve strain on the connections to the hub. If using wire staples, be careful not to run the staples through the cable. You don't need to run Cat 5 cables through conduit, and network cables can run as a bundle without concern for crosstalk between them. Don't run Cat 5 cable through ventilation ducts; the cable insulating sheath gives off toxic fumes if it gets hot enough to burn. -------- Original Message -------- Subject: [RBASE-L] - Off topic Network Q From: "MDRD" <[email protected]> Date: Mon, October 05, 2009 9:59 am To: [email protected] (RBASE-L Mailing List) Hi I have heard you should have your Cat5 cables 4ft away from fluorescent lights but the electrician wiring my new office says it is not necessary. Is there any info from major companies that I can give him or am I being overly concerned? Thanks Marc ========================================================= The information in this transmission is intended for official use only and may contain information from NJM Insurance Group that is privileged, confidential and exempt from disclosure under applicable law. It is intended for the exclusive use of the persons or entities to which it is addressed. If you are not an intended recipient or the employee or agent responsible for delivering this transmission to an intended recipient, be aware that any disclosure, dissemination, distribution or copying of this communication, or the use of its contents, is strictly prohibited. If you received this transmission in error, please notify the sender by return e-mail and delete the material from any computer. =========================================================
