(B) Riser Cable Routing Assemblies and Riser Communications Raceways
|Plenum Communications Raceway||Plenum Communications Raceway|
|Riser Communications Raceway||Riser Communications Raceway|
|General-Purpose Communications Raceway||General-Purpose Communications Raceway|
Informational Note: One method of defining fire-resistant characteristics capable of preventing the carrying of fire from floor to floor is that the cable routing assemblies and communications raceways pass the requirements of ANSI/UL 1666-2011, Standard Test for Flame Propagation Height of Electrical and Optical-Fiber Cable Installed Vertically in Shafts.