Science Fair Project Encyclopedia
OFNR
OFNR is an abbreviation for optical fiber, nonconductive, riser.
OFNR is the designation and required marking given by the National Fire Protection Association (NFPA) to interior fiber-optic cables which contain no electrically conductive components, and which are certified for use in riser applications; they are engineered to prevent the spread of fire from floor to floor in a building. Typically tested for compliance with ANSI/UL 1666-1997, Standard Test for Flame Propagation Height of Electrical and Optical-Fiber Cable Installed Vertically in Shafts. NFPA NEC 2005 Art 770.51(B) FPN.
Distinguished from optical plenum cable, and general purpose optical cable.
Last updated: 10-17-2005 21:19:09
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details