UL 746B:2018 pdf download

UL 746B:2018 pdf download

1.1 These requirements cover long-term test procedures to be used for the evaluation of materials used for parts intended for specific applications in end products. 1.2 Together with the Standards mentioned in Supplementary Test Procedures, Section 3, these investigations provide data with respect to the physical, electrical, flammability, thermal, and other properties of the materials

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UL 399:2020 pdf download

UL 399:2020 pdf download

These requirements cover self-contained drinking-water coolers employing hermetic refrigerant motor-compressors or thermoelectric water chilling systems and designed for connection to alternating-current circuits rated not greater than 600 volts in accordance with the National Electrical Code, NFPA 70. The following types of water coolers are included within the scope of this Standard: a) Those supplying cold

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