UL 5-2020 pdf download

UL 5-2020 pdf download.Surface Metal Raceways and Fittings.
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. 7.5 FITTING – A part used to connect, change direction, or terminate a raceway (for example, a transition coupler, an end cap, a corner, a tee, an adapter, or a box). 7.6 NONMETALLIC – A polymeric part. 7.7 RACEWAY, SURFACE METAL – A raceway for surface or pendant mounting with a metal base and a metal or nonmetallic cover. 7.8 RACEWAY SYSTEM – A system consisting of a surface metal raceway, associated fittings, and possibly wiring devices and accessories. 7.9 WIRING DEVICE – A part of an electrical system that is intended to carry, provide a means of connection to, or control of, electrical energy within a raceway system (for example, switches or receptacles). CONSTRUCTION 8 General 8.1 A raceway system shall be constructed to facilitate compliance with the requirements for the installation of insulated wires and cables as given in the National Electrical Code, NFPA 70. 8.2 Each element of a raceway system shall comply with the requirements for the construction, performance, and use of that element. 8.3 A raceway shall consist of one or more pieces formed and constructed to make the raceway readily distinguishable from electrical conduit, electrical metallic tubing, electrical nonmetallic tubing, and other raceway systems.
8.4 A raceway system shall provide a complete enclosure that protects the wires installed therein against damage. The complete system, when installed as intended, shall comply with the following: a) There shall not be any openings that exceed 1/16 inch (1.59 mm) in width on surfaces that are accessible following installation of the system. b) A knockout or break-away tab shall completely cover the opening in which it is located, and the clearance between the knockout or break-away tab and the opening shall not be more than 0.030 inch (0.76 mm). c) Mounting holes having a maximum diameter of 9/32 inch (7.1 mm), or slotted openings for mounting of one dimension not larger than 5/8 inch (15.9 mm) and the other dimension not larger than 1/8 inch (3.2 mm), provided on the raceway base or fitting base surface that is installed flush with the mounting surface, are not prohibited. d) A partition in a raceway system shall not have any openings through which wires are capable of being passed, intentionally or otherwise, from one compartment to another. Exception No. 1: A gap of 1/8 inch (3.2 mm) shall be used only when means is provided to completelycontain conductors in theirindividual compartments, such as wire retaining clips. Exception No. 2: On lengths ofsurface metal racewayprovided with openings that are intended for wiring devices, fittings oraccessories, those openings are not required to be blocked by knockouts or break-away tabs where the installation instructions provided with that surface metal raceway complywith 24.7.
8.5 The interior surface of the raceway system shall have a smooth finish that is free from projections, sharp edges, burrs, fins, and other faults damaging to wires when installed as intended. 8.6 A raceway shall be provided with means for securing it to the mounting surface at intervals of not more than 4 feet (1.2 m). 8.7 Where the base is intended to be secured to the mounting surface by screws or bolts extending from the inside, the arrangement shall not result in damage to the conductors. 8.8 Mounting hardware such as screws or bolts shall either be packaged with the raceway, or the installation instructions packaged with the raceway or fittings shall specify the appropriate mounting means. See 24.3. 8.9 An adhesive strip, when provided on the raceway, shall serve only as a positioning aid during the installation process. The raceway shall also have provisions for mechanical fastening as required in 8.6 – 8.8. Exception: An adhesive strip provided on a raceway shall be used as the sole means ofsecurement only when the raceway is marked for use with Class 2 circuits only, as defined in Article 725 of the National Electrical Code, NFPA 70.UL 5-2020 pdf download.