UL 5:2020 pdf download.STANDARD FOR SAFETY-Surface Metal Raceways and Fittings.
1.1 These requirements cover surface metal raceways and fittings for use in accordance with the National Electrical Code, NFPA 70.
1.2 Raceways of the following thicknesses are intended to enclose circuits operating at potentials not
exceeding 600 volts between conductors:
a) Raceways that are entirely of metal at least 0.040 inch (1.02 mm) thick nominal and
b) Raceways consisting of nonmetallic covers on metal bases of the thickness indicated in (a).
Thinner all-metal raceways or raceways of thinner metal bases with nonmetallic covers are intended to enclose circuits operating at potentials lower than 300 volts between conductors.
1.3 These requirements do not cover cable trays, wireways or nonmetallic raceways.
2 Components
2.1 Except as indicated in 2.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components used in the products covered by this standard.
2.2 A component is not required to comply with a specific requirement that:
a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or
b) Is superseded by a requirement in this standard.
2.3 A component shall be used in accordance with its rating established for the intended conditions of use.
2.4 Specific components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specified limits, and shall be used only under those specific conditions.
3 Units of Measurement
3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.
4 Undated References
4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be
interpreted as referring to the latest edition of that code or standard.
5 Installation
5.1 The method of installation, as outlined in the instructions accompanying the raceway and fittings, shall be practical and feasible under the conditions met in practice.
5.2 The raceway, fittings and any wiring devices or accessories are to be installed as intended and examined with regard to the feasibility of installation, as well as for compliance with the construction, performance, and marking requirements in this standard. Attention is to be given to items that require particular care on the part of the raceway installer.
6 Nonmetallic Parts
6.1 A nonmetallic cover, fitting or other part of a metal raceway shall comply with the applicable
requirements in the Standard for Nonmetallic Surface Raceways and Fittings, UL 5A.
7 Glossary
7.1 For the purposes of this standard, the following definitions apply:
7.2 ACCESSORY — A part that is added to a raceway system for a special purpose (for example, guards, hangers, or retainers).
7.3 BOX, CEILING FAN — A box that has been evaluated and determined to be acceptable as the support of a ceiling-suspended (paddle) fan.
7.4 BOX, FIXTURE — A box that has been evaluated and determined to be acceptable as the support of a lighting fixture, lampholder, or other equipment intended for similar installation.UL 5 pdf download.