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NFPA 262 presents a test procedure for evaluating the potential for fire spread along cables and wires housed in a plenum or other environmental space. It has been harmonized through a coordinated effort between NFPA, UL, and ASTM, and is accepted by UL as the replacement for UL 910: Standard for Safety Test for Flame-Propagation and Smoke-Density Values for Electrical and Optical-Fiber Cables Used in Spaces Transporting Environmental Air.
Originally developed by Underwriters Laboratories Inc. and published as UL 910, the Standard is an adaptation of the Steiner tunnel test (NFPA 255: Standard Method of Test of Surface Burning Characteristics of Burning Materials, ASTM E84: Standard Test Method for Surface Burning Characteristics of Building Materials, UL 723: Tests for Surface Burning Characteristics of Building Materials
NFPA 262, Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces, 2007 Edition
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