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физика

[b]A general overview of the use of utility distribution poles, including for electric supply and communications applications[/b]
[i]Overhead Distribution Lines: Design and Applications[/i] provides information on the design and use of power and communication distribution lines. An excellent resource for those in the power and communication utilities industry, this book presents information on the physical characteristics of utility poles, overhead supply and communication cables, installation practices, joint-usage issues, and safety rules, including the National Electrical Safety Code (NESC), California-specific rules, and others. It describes how to select the proper poles for specific applications. The especially valuable final chapter provides examples showing how it all works in practice, providing a background allowing more effective use of related industry software.
Rather than delving into detailed design and installation techniques, this book serves as an overview for engineers and non-technical audiences alike. At the same time, it serves as a compendium of technical information not readily available elsewhere. This unique book:
Offers an overview of pole structures, pole installation and maintenance, wires and cables, and cable installation and maintenance—with examples Provides information on national standards documents such as the National Electrical Safety Code (NESC), ANSI O5.1, California General Order 95, and more Explores the «sag–tension» relationship between wires and poles Includes appendices that cover properties of messenger strands, wireless attachments, solution of equations to determine sag, under uniform and point loads [i]Overhead Distribution Lines: Design and Applications[/i] offers readers an understanding of the basic principles and various issues related to electric supply and communications distribution lines. It is a valuable resource for utility engineers, as well as those without a technical background.

книги по психологии

общая психология

саморазвитие / личностный рост

практика психологии

самосовершенствование

психологические тренинги

психическое здоровье и психогигиена

самореализация

Overhead Distribution Lines

Без серии

Lawrence M. Slavin