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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
CHAPTER 10
Wire, Cable, and Raceway
General
Electrical conductor materials can be classified in three groups based on their resistivity
(ohm-centimeter) properties. They include:
Conductors 1.59 10
6
to 400 10
6
ohm-centimeters
Semiconductors 10
3
to 10
9
ohm-centimeters
Dielectrics (Insulators) 10
10
to <10
20
ohm-centimeters
Electrical wiring is generally composed of two of those components, i.e. a conductor (#1) plus
insulator (#3) in the above list.
Definitions
Before examining wire and cable in more detail, two words sometimes used interchangeably,
cable and wire, should be examined. A wire can be defined as a slender rod or filament of
drawn metal.
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Publisher Resources

ISBN: 9780815520450