UL 5
Standard for Surface Metal Raceways and Fittings
February 26, 2004
The most recent designation of ANSI/UL 5 as an American National Standard (ANSI) occurred on May 10, 2007.
This ANSI/UL Standard for Safety, which consists of the Thirteenth Edition with revisions through May 17, 2007, is under continuous maintenance, whereby each revision is ANSI approved upon publication.
INTRODUCTION
1 Scope
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.
1.4 A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard. Revision of requirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.
2 General
2.1 Components
2.1.1 Except as indicated in 2.1.2, 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.
2.1.2 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b) Is superseded by a requirement in this standard.
2.1.3 A component shall be used in accordance with its rating established for the intended conditions of use.
2.1.4 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.
2.2 Units of measurement
2.2.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information.
2.3 Undated references
2.3.1 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.
2.4 Installation
2.4.1 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.
2.4.2 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.
2.5 Nonmetallic parts
2.5.1 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.
APPENDIX A
Standards for Components
Standards under which components of the products covered by this standard are evaluated include the following:
Title of Standard - UL Standard Designation
Plugs and Receptacles, Attachment - UL 498
Raceways and Fittings, Nonmetallic Surface - UL 5A
Switches, General-Use Snap - UL 20
