ulharm-5a.4Nonmetallic Surface Raceways and Fittings
UL 5A
1 Scope
1.1 These requirements cover nonmetallic raceways and fittings. These products are for use as surface wiring systems in accordance with the Rules of the Canadian Electrical Code, Part 1, and NFPA 70, National Electrical Code.
1.2 Raceways that are all nonmetallic and of any thickness are intended to enclose circuits operating at potentials not exceeding 600 V between conductors.
1.3 Nonmetallic raceways with metal covers are intended to enclose circuits operating at potentials in accordance with Table 1 or Table 1a.
1.4 These requirements do not cover surface metal raceways, cable trays, or wireways.