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Electrical Conductors

COURSE NO: E02-005
Electrical Conductors
Course Highlights

This online engineering PDH course provides general requirements, classifications and application information for electrical conductors.


A conductor is a piece of metal used to conduct electricity, known colloquially as an electrical wire. Wires are very good conductors, which mean that they have very little resistance. In fact, their resistance is so small that often we consider it to be zero. (In other words, we often treat wires as perfect conductors).


In United States, conductors are measured by American wire gauge (abbreviated AWG) for smaller ones, and circular mils for larger ones. To give you some idea how thick these wires are; AWG 0000 wire is about 11.7 millimeters in diameter (a little less than one-half inch thick) and at the opposite end of the scale, AWG 40 is less than 0.1 millimeters in diameter (about as thick as a strand of hair from your head). The wiring inside the walls of your home is usually AWG 10 or AWG 12 wire.


This 2 PDH online course is applicable to students, professional engineers, service technicians, energy auditors, operational & maintenance personnel, facility engineers who are interested in gaining a better understanding of electrical conductors.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Recall the definitions of unit size, mil-foot, square mil, and circular mil
  • Define specific resistance and recall the three factors used to calculate it in ohms
  • Describe the proper use of the American Wire Gauge when making wire measurements
  • State the factors required in selecting proper size wire
  • State the advantages and disadvantages of copper or aluminum as conductors
  • Define insulation resistance and dielectric strength
  • Identify the safety precautions to be taken when working with insulating materials
  • List the most common insulators used for extremely high voltages
  • Recall the design and use of coaxial cable
Course Document

In this professional engineering CEU course, you need to review Chapter 1 of Module 4 titled "Electrical Conductors" of the Naval Education and Training Materials (NAVEDTRA 14176), Electricity and Electronic Training Series.

To view, print and study the course document, please click on the following link(s):
Electrical Conductors (959 KB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of fifteen (15) questions to earn 2 PDH credits. The quiz will be based on Chapter 1 of Module 4 of this NAVEDTRA publication.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: