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Electrical Conductors

Learning objectives are stated at the beginning of each chapter. These learning objectives serve as a  preview of the information you are expected to learn in the chapter. The comprehensive check questions  are based on the objectives. By successfully completing the OCC-ECC, you indicate that you have met
the objectives and have learned the information. The learning objectives are listed below.  Upon completing this chapter, you should be able to:

1.  Recall the definitions of unit size, mil-foot, square mil, and circular mil and the mathematical  equations and calculations for each.
2.  Define specific resistance and recall the three factors used to calculate it in ohms.
3.  Describe the proper use of the American Wire Gauge when making wire measurements.
4.  Recall the factors required in selecting proper size wire.
5.  State the advantages and disadvantages of copper or aluminum as conductors.
6.  Define insulation resistance and dielectric strength including how the dielectric strength of an  insulator is determined.
7.  Identify the safety precautions to be taken when working with insulating materials.
8.  Recall the most common insulators used for extremely high voltages.
9.  State the type of conductor protection normally used for shipboard wiring.
10.  Recall the design and use of coaxial cable.

ELECTRICAL CONDUCTORS

In the previous modules of this training series, you have learned about various circuit components.  These components provide the majority of the operating characteristics of any electrical circuit. They are  useless, however, if they are not connected together. Conductors are the means used to tie these
components together.

Many factors determine the type of electrical conductor used to connect components. Some of these  factors are the physical size of the conductor, its composition, and its electrical characteristics. Other  factors that can determine the choice of a conductor are the weight, the cost, and the environment where  the conductor will be used.



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