【正文】 access to a wiring space between the raised floor and the slab below. 商業(yè)樓宇 摘要： 提供商業(yè)樓宇電氣設(shè)計(jì)指南和一般參考。 and electrical energy management. Although directed to the power oriented engineer with limited mercial building experience, it can be an aid to all engineers responsible for the electrical design of mercial buildings. This remended practice is not intended to be a plete handbook。 expansion, modernization, and rehabilitation。 munication systems planning。 electric space conditioning。 systems protection and coordination。 services, vaults, and electrical equipment rooms。 power sources and distribution apparatus。 1 Commercial Buildings Abstract: A guide and general reference on electrical design for mercial buildings is provided. It covers load characteristics。 voltage considerations。 controllers。 wiring systems。 lighting。 transportation。 facility automation。 special requirements by occupancy。 however, it can direct the engineer to texts, periodicals, and references for mercial buildings and act as a guide through the myriad of codes, standards, and practices published by the IEEE, other professional associations, and governmental bodies. Keywords: Commercial buildings, electric power systems, load characteristics 1. Introduction Scope This remended practice will probably be of greatest value to the power oriented engineer with limited mercial building experience. It can also be an aid to all engineers responsible for the electrical design of mercial buildings. However, it is not intended as a replacement for the many excellent engineering texts and handbooks monly in use, nor is it detailed enough to be a design manual. It should be considered a guide and general reference on electrical design for mercial buildings. Commercial Buildings The term “mercial, residential, and institutional buildings” as used in this chapter, enpasses all buildings other than industrial buildings and private dwellings. It includes office and apartment buildings, hotels, schools, and churches, marine, air, railway, and bus terminals, department stores, retail shops, governmental buildings, hospitals, nursing homes, mental and correctional institutions, theaters, sports arenas, and other buildings serving the public directly. Buildings, or parts of buildings, within industrial plexes, which are used as offices or medical facilities or for similar nonindustrial purposes, fall within the scope of this remended practice. Today’s mercial buildings, because of their increasing size and plexity, have bee more and more dependent upon adequate and reliable electric systems. One can better understand the plex nature of modern mercial buildings by examining the systems, equipment, and facilities listed in . Electrical Design Elements In spite of the wide variety of mercial, residential, and institutional buildings, some electrical design elements are mon to all. These elements, listed below, will be discussed generally in this section and in detail in the remaining sections of this remended practice. The principal design elements considered in the design of the power, li