UL 817:2018 Cord Sets and Power-Supply Cords.
1.1 UL 817 specifies the requirements for cord sets and power-supply cords employing molded-on or assembled-on fittings, rated 600 V maximum, and intended for use in non-hazardous locations in accordance with the National Electrical Code, ANSI/NFPA 70.
1.2 This Standard also specifies the requirements for molded-on general-use attachment plugs and cord connectors.
1.3 This Standard also specifies the requirements for hospital grade attachment plugs and cord connectors.
1.4 This Standard also specifies the requirements for cord restraint devices.
1.5 These requirements do not cover cord sets intended for temporary outdoor use — not to exceed 90
days — with outdoor equipment, Christmas-tree, and other seasonal decorative-lighting outfits. Such
devices are covered by the Standard for Outdoor Seasonal-Use Cord-Connected Wiring Devices, UL
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 generally 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b) Is superseded by a requirement in this standard.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 The values given in SI (metric) units shall be normative, except for AWG/kcmil conductor sizes. Any
other values are for information only.
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 Definitions
5.1 The following terms and definitions apply in this standard.
5.2 ADAPTER CORD SET — A cord set, without a switch, intended to provide power from a single NEMA plug to a maximum of 6 NEMA outlets, convert from one contact configuration to another, or both.
Adapter cord sets are intended for use at construction sites and similar locations.
5.3 ALLOWABLE AMPACITY — The maximum continuous current-carrying capacity of electrical cord sets or power-supply cords, as determined by the lowest ampere rating of any individual component.
5.4 APPLIANCE CONNECTOR — A type of cord connector which mates with an inlet.
5.5 APPLIANCE/FLAT-IRON PLUG — A type of appliance coupler with a cord guard and a slot configuration specified for use with heating or cooking appliance.UL 817 pdf download.