Car air-conditioning and heating units 3. Part of the reason that elevator usage is extraordinarily safe is that construction and maintenance are regulated by the wonderfully robust ASME A17.1 2007/CSA B44-07 Safety Code for Elevators and Escalators, which contains overall construction and maintenance requirements everything from seismic mandates to machine-room lighting. For example, wiring that is under exclusive utility control and has to do with the generation and distribution of electrical power is not NEC regulated. 3016. Pits for Elevators. - California Department of Industrial Relations . While machine room-less designs have been commercially available for many years, their use may still be unknown to some AHJs. Notwithstanding, if sprinklers are installed in hoistways, machine rooms or the like, the disconnecting means is permitted to automatically open the power supply to the affected elevator(s) prior to the application of water. U.S. Latham, NY Shopping Miscellaneous Retail Stores, NEC Wheelchair lifts EazyLift Elevators, . Besides the power-supply disconnect discussed, it is provided that elevators have a single means for disconnecting all ungrounded car lights, receptacles and ventilation power-supply conductors for that elevator car. Many NEC articles address voltage limitations, and Article 620 is no exception. It employs specialists in Mobile, Alabama, and has technical and news correspondents around the world. CLAIMED . or larger, not exceeding 6 ft. in length, are permitted between control panels and machine motors, machine brakes, motor-generator sets, disconnecting means and pumping motors and valves. The Code provides guidance through regulations to establish requirements. In an elevator machine room, where space may be limited in the first place, the working-space mandate must be factored in very early in the design process lest an unthinkable amount of rework be necessary. Even non-composite fiber-optic cable, which does not carry electrical energy, is subject to the code. Elevator cab lights require emergency back-up power. As greater numbers of elevators are added, the likelihood of them all operating simultaneously decreases so that it is permissible to reduce the feeder ampacity. endstream endobj startxref 836 Troy Schenectady Road Latham, NY 12110 . First, the traveling cable must be composed of very fine-stranded conductors so it can flex with a minimum of internal stresses, ensuring long service life and reliability.

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