Standard: 2024A BULLETIN

UL STANDARD FOR SAFETY OUTLINE OF INVESTIGATION FOR CABLE ROUTING ASSEMBLIES

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Scope:

These requirements cover the following types of routing assemblies designed for use with conductive or nonconductive optical fiber, communications cables/wire, community antenna television cable, and low-power network-powered broadband communications cable:

a) Plenum – Evaluated for installation in ducts or other spaces used for environmental air (plenums) as well as general purpose applications.

b) Riser – Evaluated for installation in risers as well as general purpose applications.

c) General Use – Evaluated for general purpose applications only.

This outline covers routing assemblies for installation of conductive or nonconductive optical fiber cable, communications cable/wire, community antenna television cable, and low-power network-powered broadband communications cable. Cable Routing Assemblies are intended to be installed in accordance with ANSI/NFPA 70, National Electrical Code (NEC). Cable routing assemblies are only suitable for the installation of cable/wire noted in the following information. Individual routing assembly systems differ in their construction; therefore, their components are not interchangeable with routing assemblies or fittings of other systems. This product category includes pliable lengths, rigid straight sections, elbows, bends and fittings such as expansion joints, female and male adapters, and couplings.

These products may or may not incorporate end fixtures or covers.

A routing assembly marked "Plenum" is suitable for use in fabricated ducts or other spaces used for environmental air (plenums) where used to support cables as identified in Cable identification, Table 1.1. This plenum routing assembly exhibits a maximum peak optical density of 0.5, a maximum average optical density of 0.15, and a maximum flame spread distance of 5 feet (152 cm) where tested in accordance with the Test for Flame Propagation and Smoke-Density Values (Plenum) in the Standard for Optical Fiber and Communication Cable Raceway, UL 2024.

A routing assembly marked "Plenum" is also suitable for installation in risers where used to support cables identified for riser use in Cable identification, Table 1.1. A routing assembly marked "Plenum" is also suitable for general use where used to support any of the cables identified for general use in Table 1.1.

A routing assembly marked "Riser" is suitable for installation in riser installations where used to support cable as identified in Cable identification, Table 1.1. This riser routing assembly has fire resistant characteristics that are intended to prevent the carrying of fire from floor to floor and meets the test requirements of the Test for Flame Propagation (Riser) in the Standard for Optical Fiber and Communication Cable Raceway, UL 2024. This riser routing assembly is identified by a marking on its surface or on a marker tape indicating "Riser."

A routing assembly marked "Riser" is also suitable for general use where used to support any of the cables in Cable identification, Table 1.1 identified for general use.

A routing assembly that is not marked either "Plenum" nor "Riser" is suitable for general use support cable as identified in Cable identification, Table 1.1. This general use routing assembly is resistant to the spread of fire where tested in accordance with the Vertical-Tray Flame Test (General Use) in the Standard for Optical Fiber and Communication Cable Raceway, UL 2024.

Organization: UL
Document Number: 2024a bulletin
Publish Date: 2011-03-25
Page Count: 2
Change Type: STCH
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Inactive
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