Text

McGraw - Hill's Illustrated Index : to the 2002 National Electrical Code

---

The fastest and easiest way to find what you need in the NEC on site or in the office. This A-to-Z illustrated guide helps you to locate immediately the exact section of the NEC, you need to solve any electrical construction problem. No other single reference makes the code more accessible or understandable.rn Convenient alphabetical format simplifies the codern Covers all the changes in the 2002 NECrn Easy to use cross references to code sections and tablesrn More than 400 diagrams, drawings, and tables simplify installationrnThe design and installation of electrical systems employ a wide variety of techniques, often involving special types of equipment and materials designed for specific applications. All installations specified in the National Electrical Code (NEC) section 90.2(A)(1) through (5) must conform to applicable NEC requirements, local ordinances, and instructions provided by equipment and component manufacturers. This chapter explains the key terms and basic layout of the NEC.rnSince the first central station electric generating plant was developed in New York City in 1882 by Thomas A.Edison, the electrical construction industry has grown at an astonishing rate to become one of the largest industries in the United States. The first generating plant created public demand for the use of electric lighting and power in existing buildings, as well as for new construction.rnThese first electrical wiring installations were usually laid out by workers employed and trained by the power companies, and the majorityof these installations were designed by mechanics on the job, often as the work progressed. Building contractors then began hiring workers of their own to install electrical wiring systems, but because of the special skills and knowledge required, these same builders soon began leaving the wiring installations to workers began to specialize in this work as electrical contractors.rnAs electrical construction continued to become a more important part of general building construction, architects began to prepare layouts of the desired electrical systems on their architectural drawings. This layout usually indicated the lighting outlets, base “plugs,” and light switches by means of certain symbols. A line was sometimes drawn from a lighting aoutlet to a wall switch to indicate how the various lamps were to be controlled, but this usually the extent of the electrical design. The details of wiring, number of circuits, and the like were still left to the mechanics (electricians) installing the system. As electrical systems became more extensive and complex, electrical contractors began hiring drafters to prepare working drawings to supplement the sketchy outlet layout on the architectural drawings, to provide a basis for preparing estimates, and to give instructions to electricians in the field.rnFrom that point on, electrical construction continued to become a more important part of general building construction, and soon the architects began to prepare more extensive layouts of the electrical systems, until finally separate drawings were included along with the architectural drawings. As the volume of such layout work increased and electrical systems became still more extensive and complex, a greater engineering knowledge of power and illumination requirements became necessar. Persons with the proper knowledge and training began to devote their time exclusively to designing and lying out electrical installations as consulting engineers. These consulting engineers conveyed their designs by meand of working drawings that used symbols, lines, notations, and written specifications. Thus, the electrical designer became a very important cog in the wheel of electrical construction. Yet, the best electrical designs, specifying the best materials and equipment, are useless without trained workers to properly install the systems. Consequently, the trained electrical technician is indispensable in the building construction industry, and a thorough knowledge of the NEC is one of the first requirements in becoming a trained electrical technician. In fact, the NEC is probably the most widely used and genarlly accepted code in the world. It is used as an electrical installation, safety, and reference guide in the United States, and in many other parts of the world as well.rn

---

Ketersediaan

090101068

Tersedia

Informasi Detil

Judul Seri

-

No. Panggil

621.3 BRI m

Penerbit

McGraw - Hill, Inc. : New York., 2002

Deskripsi Fisik

vi, 351 p.

Bahasa

Indonesia

ISBN/ISSN

-

Klasifikasi

621.3 BRI m

Tipe Isi

-

Tipe Media

-

Tipe Pembawa

-

Edisi

-

Subyek

Electric Engineering

Info Detil Spesifik

-

Pernyataan Tanggungjawab

-

Versi lain/terkait

Lampiran Berkas

Komentar

---

You must be logged in to post a comment