nec elevator pit requirements

PDF Elevator Safety Program - Technical Clarification Always verify all conditions and requirements with the state and the AHJ where the installation is taking place. Smoke detectors, which are required in all elevator lobbies and elevator equipment rooms, must be connected to the elevator controllers directly by means of auxiliary contacts and wiring, or indirectly by means of output signals from the fire alarm control panel. Suspending the cables from the supports by a means that automatically tightens around the cable when tension is increased for unsupported lengths up to 200 ft. An NEC Informational Note defines unsupported lengths. Fireman telephone jacks and telephone cabling are typically sufficient for each of these locations. In Part One of this series (ELEVATOR WORLD, April 2012), we began an examination of National Electrical Code (NEC) 2011 mandates for elevators and related equipment installations. See Section 3 of the. Moreover, it is necessary to consider future worker safety for an indefinite period. Dan Neeser is a Senior Field Application Engineer with Eatons Bussmann Division. In the event of a breakdown, that phone must automatically call a location staffed 24 hours a day. !>x=yy Bvv8?~e PK ! Related Code Sections 802.1.8 Indirect/Special Waste, Elevator Pit Drain or Sump Pump Choose topics from a full list of courses covering electrical topics that cover what you need to know from the NEC and other electrical codes and standards. For current-limiting fuses, the information to achieve selective coordination has been available for many years in fuse amp ratio tabular form. The condition is that all conductors must be insulated for the maximum voltage applied to any conductor within the cables or raceway system, and all live parts of the equipment must be insulated from ground for this maximum voltage. Special conditions: Troubleshooting in wet, hot or cold conditions calls for extra caution. This may be countered by providing good machine-room ventilation. This requirement applies to all controllers, disconnecting means and other electrical equipment that may need servicing, inspection or maintenance. Based on the analysis, the arc-flash boundaries at the elevator/escalator controllers ranged from 3-16 in. q!^mDtsnEX3_ shvqu+X9@w3gSj`g The elevator equipment room that serves a hydraulic elevator is almost always located on the lowest floor adjacent to the elevator shaft. 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. The circuit(s) for the lighting and receptacles must be dedicated to the elevator area only. In elevators provided with Firefighters' Emergency Operation, a drain or sump pump shall be provided. However, it is likely that for many elevator controllers, this may not be high enough for the available fault current where they will eventually be installed. Granle is a licensed professional engineer with Sebesta Blomberg & Associates, Rochester, Minn. https://www.facebook.com/ElectricalConstructionMaintenanceMagazine, https://www.linkedin.com/company/electrical-construction-maintenance/, ABCs Construction Backlog Indicator Down to Start 2023, The Most Popular Code Quizzes of the Week from 2021, The 10 Most Popular Photo Galleries of 2021, Whats Wrong Here? 953 0 obj <> endobj Proper selective coordination in a multi-elevator installation on the same feeder ensures if one elevator develops a fault, the other units will not be shut down. . Please check your entries and try again.

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