| An apprentice electrician prepares to become a journeyman typically during a four-year period. These four years include 2000 hours per year of on-the-job training, or a total of 8000 hours. During off-hours an apprentice studies electrical theory, methods, equipments, and the NEC.
My purpose in writing this book was to provide the apprentice or journeyman with most of the information he or she is required to know. I have drawn on my experience as a former instructor of apprentice and journeymen electricians to include most of the vital material on both electrical theory and its applications. This book has been planned as a study course either for the classroom or as a self-taught program. It may be utilized without any other books on electrical theory.
Very little on the NEC is included since two other Audel books offer abundant information on it. Guide to the National Electrical Code, which is updated annually as the NEC is changed, gives a very complete interpretation of the Code. Questions and Answer for Electrician’s Examinations can further help the electrician toward a thorough knowledge of the NEC.
Trigonometry is covered briefly in this book, because it is useful in making mathematical calculations of alternating currents. For the reader who is not familiar with trigonometry, there are other means of explanation. |
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