3.1.5.20.

(1) Subject to limits on size for penetrations of fire separations as required by Sentence 3.1.9.3.(2), within a fire compartment of a building required to be of noncombustible construction, totally enclosed nonmetallic raceways not more than 175 mm in outside diameter, or an equivalent rectangular area, are permitted to be used to enclose optical fibre cables and electrical wires and cables, provided the raceways exhibit a vertical char not more than 1.5 m when tested in conformance with the Test for Flame Propagation (Riser) in Section 3.4 of the ULC/ORD-C2024, “Fire Tests for Optical Fibre Cable Raceways” (FT-4 rating).

(1) Subject to limits on size for penetrations of fire separations as required by Sentence 3.1.9.3.(2), within a fire compartment of a building required to be of noncombustible construction, totally enclosed nonmetallic raceways not more than 175 mm in outside diameter, or an equivalent rectangular area, are permitted to be used to enclose optical fibre cables and electrical wires and cables, provided the raceways exhibit a vertical char not more than 1.5 m when tested in conformance with the Test for Flame Propagation (Riser) in Section 3.4 of the ULC/ORD-C2024, “Fire Tests for Optical Fibre Cable Raceways” or Clause 6.16 of CSA C22.2 No 211.0, “General Requirements and Methods of Testing for Nonmetallic Conduit” (FT-4 rating).