北美燃烧分类

单根燃烧:

水平燃烧: FT2/FH/ Horizontal Flame

-垂直燃烧: FT1 , VW-1/FV-2, FV-1, Burning particles (dropping)

成束燃烧(大规模燃烧):

Vertical tray flame tests:

Method 1 - Vertical tray ( UL1685 FLAME EXPOSURE，代表线型CM )，

Method2 - FT4 (代表线型CMG)

UL1666 - Flame Propagation Height of Electrical and Optical-Fiber

Cables Installed Vertically in Shafts (代表线型CMR)

NFPA 262 - FT6 Plenum (代表线型CMP)

载电流燃烧: FT5,针对Portable cables

低烟: ST1 Limited smoke (与FT4或CM燃烧同时进行)