Free Standards Library

UL 924-2016 pdf download - Emergency Lighting and Power Equipment. 4.33 LAMPHEAD – As applicable to unit equipment, a lamp assembly mounted externally to the main enclosure of the equipment with a swivel or equivalent mounting means...

UL 917-2016 pdf download - Clock-Operated Switches. 1 Scope 1 .1 These requirements cover clock-operated switches rated 600 V or less, to be used in ordinary locations designed to close and open circuits to a load at...

UL 870-2016 pdf download - Wireways, Auxiliary Gutters, and Associated Fittings. 8.2 Nonmetallic wireways, auxiliary gutters, and associated fittings 8.2.1 The material used for nonmetallic wireways, auxiliary gutters, and associated fittings shall comply with the Standard for...

UL 817-2015 pdf download - Cord Sets and Power-Supply Cords. 5.1 3 DIMMER – A device intended to change lighting to various intensities. 5.1 4 EXTENSION CORD SET – A cord set having NEMA fittings on both...

UL 773-2016 pdf download - Plug-In Locking Type Photocontrols for Use with Area Lighting. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References...

UL 756-2016 pdf download - Coin and Currency Changers and Actuators. 2.1 4 FUNCTIONAL PART – A part other than an enclosure or cabinet used to maintain the intended relative physical position of fixed or moving parts,...

UL 751-2016 pdf download - Vending Machines. 5.23 MOTOR CONTROLLER – Any device normally used to start and stop a motor, such as a switch, thermostat, pressure limiting control, or the like. 5.24 NONFUNCTIONAL PART – A...

UL 676-2015 pdf download - Underwater Luminaires and Submersible Junction Boxes. 6 General 6.1 A luminaire shall be constructed to provide mechanical strength appropriate for the stress it is likely to encounter during installation and use. 6.2...