226 Electrical Power Systems Technology
Table 8-1. Operating Temperature
Ranges of Various Types of Insulation
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Type of Insulation Temperature Range (ac)
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Neoprene® –30° to 90°
Teflon® –70° to 200°
Polyethylene –60° to 80°
Rubber –40° to 75°
Vinyl –20° to 80°
Polypropylene –20° to 105°
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Copper has a combination of various properties, such as malleability,
strength, and high electrical and thermal conductivity. It is also capable of
being alloyed or coated with other metals. Copper may be plated with sil-
Figure 8-14. Using the AWG: (A) The American wire gage (AWG) (B) Using the
AWG to measure conductor size