Introduction to Electrical Power and Power Electronics

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6

Power Cable

The term wire generally means one or more insulated conductors in small size (solid

or stranded for exibility), whereas cable means one or more insulated conductors

of large size grouped in a common insulation jacket, often with a ground shield.

Figure 6.1 shows a single-conductor, 2-kV class cable, whereas Figure 6.2 is a three-

conductor, three-phase cable suitable for 5- to 15-kV applications.

6.1 CONDUCTOR GAGE

Each conductor size is measured in American wire gage (AWG), British wire gage

(BWG), or in metric gage designated by the conductor cross-section area in square

millimeters. The AWG and BWG numbers are log-inverse measures ...