UL 864:2020 pdf download

UL 864:2020 pdf download

1.1 These requirements cover. a) Discrete electrical control units and accessories for fire alamm systems; b) Electrically- and elecroinially-operated amplifers that provide speech communication and distinctive sounds in conjunction with fire protective signaling systems; and c) Commercial stationary and fixed power supplies for fire-protective signaling systems, having input and output ratings of not more than

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UL 793:2020 pdf download

UL 793:2020 pdf download

1.1 These requirements cover automatically operated roof vents for smoke and heat that fall into two general categories: mechanically-opened and gravity-opened. Mechanically-opened vents consist primarily of a body frame, one or more damper covers and hatches, and operating mechanisms which generally include a heat responsive device and spring(s). Gravity-opened vents consist primarily of a body

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UL 793:2017 pdf download

UL 793:2017 pdf download

1.1 These requirements cover automatically operated roof vents for smoke and heat that fall into two general categories: mechanically-opened and gravity-opened. Mechanically-opened vents consist primarily of a body frame, one or more damper covers and hatches, and operating mechanisms which generally include a heat responsive device and spring(s). Gravity-opened vents consist primarily of a body

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UL 758:2019 pdf download

UL 758:2019 pdf download

1.1 These requirements cover Appliance Wiring Material (AWM) in the form of single insulated conductors, multi-conductor cables, optical fibers, individual insulated conductors, and fiber optic members for use as components in multi-conductor cables. 1.2 The appliance wiring material covered by the requirements of this Standard are solely for use as factory-installed wiring either within the

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