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本文简要介绍《美国国家电气规范》有关医院电气设计的部分内容,比对中、美两国在医院供配电系统设计方面的差异,并由此引发了一些思考:①美国NEC将电气负荷分为四类,并具体规定了接入这四类负荷配电回路的设备;②NEC强调应由独立的发电机组提供备用电源;③NEC规定重要负荷均采用电源自切,但自切开关均设在首端;④NEC规定不同负荷种类的线路分开敷设,并由各自色标标明。
This article briefly introduces the “National Electrical Code” part of the hospital electrical design, compared with China and the United States in the hospital for power distribution system design differences, and thus triggered some thinking: The United States NEC electrical load points For the four categories, and specifies the access to these four types of load distribution circuit equipment; ② NEC stressed the independent power generation units should provide backup power; ③ NEC provisions of the major loads are used power cut, but the cut-off switch are located in the first End; ④ECEC different load types of lines laid separately, and marked by the respective color standard.