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)