Date: March 8, 2007
Stéfan Balatchev
Engineering Manager
TTK S.A.S.
7 ALLÉE DES CHÂTAIGNIERS
ZA DU BUISSON DE LA COULDRE
78190 TRAPPES
FRANCE
Dear Mr. Balatchev,
This letter is to confirm that NFPA 262 is the replacement for UL 910. The information below is
from an NFPA website.
-------------------------------------------------------------------------------------------------------------------------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). (Approx. 30 pp., 2007)
------------------------------------------------------------------------------------------------------------------------------------If you need more information please let me know.
Sincerely,
Chuck Barlow
Associate Engineer
Cabling Products Testing Group
Intertek ETL SEMKO