UL 817 PDF

1 Scope

1.1 This Standard 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, 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 2438.

1.6 Cord sets employing assembled enclosures provided with means for mounting or intended for use in furniture are covered by the Standard for Furniture Power Distribution Units, UL 962A.

1.7 Cord sets employing assembled enclosures, standard configuration outlets, and a surge protective device (SPD) are covered by the Standard for Surge Protective Devices, UL 1449.

1.8 These requirements also cover general-use extension cord sets employing supplementary charging circuits and induction power transmitters. See Supplementary charging circuits and induction power transmitters, 8.

Summary of Topics

This revision of ANSI/UL 817 dated July 30, 2025 incorporates the following changes in requirements:

– Heater-Use Power-Supply Cords, New Requirements; 5.6A, 5.11A, 5.18A, 5.18B, 6.5.2, 7.4, 10.17, 22.10, 22.11, Section 35, Annex G Figure