并联电路的NEC接地要求

Proceedings of 1996 IAS Industrial and Commercial Power Systems Technical Conference Pub Date : 1998-03-01 DOI:10.1109/2943.655659

J. Daly

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引用次数: 2

摘要

1996年《国家电气规范》规定，当电路导体并联时，设备接地导体必须并联，并根据过流保护装置的安培额定值确定尺寸。本文综述了并联电路的要求、并联设备接地导体的具体要求以及符合NEC的方法。讨论了工业设施中通常使用的开放式布线滚道、电缆桥架、直接掩埋和地下管道装置;不包括在商业应用程序中更常用的其他布线方法。

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NEC grounding requirements for parallel circuits

The 1996 National Electrical Code requires that the equipment grounding conductor must be run in parallel when the circuit conductors are run in parallel and be sized on the basis of the ampere rating of the overcurrent protective device. This paper reviews the requirements for parallel circuits, the specific requirements for parallel equipment grounding conductors and the methods of complying with the NEC. Open wiring raceway, cable tray, direct burial and underground duct installations as normally utilized in an industrial facility are addressed; other wiring methods that are more commonly used in commercial applications are not included.

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Proceedings of 1996 IAS Industrial and Commercial Power Systems Technical Conference

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