Standard Test Method for Heat Release, Flame Spread, Smoke Obscuration, and
Mass Loss Testing of Insulating Materials Contained in Electrical or
Optical Fiber Cables When Burning in a Vertical Cable Tray Configuration
This test method provides a means to measure the heat released
and smoke obscuration by burning the electrical insulating
materials contained in electrical or optical fiber cables when the
cable specimens, excluding accessories, are subjected to a
specified flaming ignition source and burn freely under well
ventilated conditions. Flame propagation cable damage, by char
length, and mass loss are also measured.
This test method provides two different protocols for exposing
the materials, when made into cable specimens, to an ignition
source (approximately 20 kW), for a 20 min test duration. Use it to
determine the heat release, smoke release, flame propagation and
mass loss characteristics of the materials contained in single and
multiconductor electrical or optical fiber cables.
This test method does not provide information on the fire
performance of materials insulating electrical or optical fiber
cables in fire conditions other than the ones specifically used in
this test method nor does it measure the contribution of the
materials in those cables to a developing fire condition.
Data describing the burning behavior from ignition to the end of
the test are obtained.
This test equipment is suitable for measuring the concentrations
of certain toxic gas species in the combustion gases (see Appendix
The values stated in SI units are to be regarded as standard
(see IEEE/ASTM SI-10). The values given in parentheses are
mathematical conversions to inch-pound units that are provided for
information only and are not considered standard.
standard measures and describes the response of
materials, products, or assemblies to heat and flame under
controlled conditions, but does not by itself incorporate all
factors required for fire hazard or fire risk assessment of the
materials, products or assemblies under actual fire
Fire testing is inherently hazardous. Adequate safeguards
for personnel and property shall be employed in conducting these
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
*A Summary of Changes section appears at the end of this
Order online or call: Americas: +1 800 854 7179 | Asia Pacific: +852 2368 5733 | Europe, Middle East, Africa: +44 1344 328039