UL Standards

1.1 This Standard applies to Class A, single- and three phase, ground-fault circuit interrupters intended for protection of personnel, for use only in grounded neutral systems in accordance with the National Electrical Code (NEC), ANSINFPA 70, the Canadian Electrical Code, C22.1 (CEC)， and Electrical Installations (Use), NOM-001-SEDE. These devices are intended for use on alternating

1.1 These requirements cover an alternate approach to specitying through air and over surtace spacings for electrical equipment through the use of the principles of insulation coordination. 1.2 The complete principles of insulation coordination involve the consideration of the combination of clearances, creepage distances, and the properties of solid insulation used to constitute the insulation

1.1 These requirements cover power ventilators of the roof-and wal-mounted types and duct fans of the straight-through type intended for commercial or industrial use, residential fans intended for heated and conditioned air and for connection to permanently installd wiring systems in accordance with the National Electrical Code, NFPA 70.

1.1 This standard applies to 60 – 250°C single- or multiple-conductor jacketed or unjacketed, integral or nonintegral cables and single or multiple coaxial cables for telephone and other communication circuits such as voice, data, and audio for on-premise customer systems. These cables are may contain one or more optical fibre members. For the purpose of

1.1 These requirements cover key locks categorized as follows and defined in Glossary, Section 3. a) Cabinet locking cylinders, b) Door locks, c) Locking cylinders, d) Security container key locks, Type 1 and Type 2, and e) Two-key locks.