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Electrical Codes, Standards, Recommended Practices and Regulations
book

Electrical Codes, Standards, Recommended Practices and Regulations

by Robert J. Alonzo
January 2010
Intermediate to advanced content levelIntermediate to advanced
512 pages
18h 35m
English
William Andrew
Content preview from Electrical Codes, Standards, Recommended Practices and Regulations
Electrical Distribution Systems
Electrical energy is distributed to customers through a utility’s electrical distribution
network. That network consists of electrical distribution substations which step-down the
transmission line voltage levels between 69 kV and 765 kV to distribution voltage levels,
usually 35 kV or less. Typical distribution voltages range from 34,500Y/19,920 V to
4,160Y/2400 V. Distribution networks can consist of overhead electrical lines, as well as
underground cable systems. Voltages at utility customer delivery points may require further
reduction or stepping-down, either by utility transformers or customer owned and operated ...
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Publisher Resources

ISBN: 9780815520450