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Electrician's Exam Preparation Guide to the 2017 Buy this title complete here: http://bit.ly/2yP4hOJ $67.99 ELECTRICIAN’S EXAM PREPARATION GUIDE Tenth Edition Based on the 2017 NEC® by John E. Traister Revised and Updated by Rob Adair IncludesOnline inside the backPreview cover: Inside the back cover of this book you’ll find a software download certificate. To access the download, follow the instructions printed there. Contains all the questions in the book in interactive self-test software that makes studying almost fun. Each answer is explained, and shows the pertinent NEC® section at the click of the mouse. Use the study mode to get an immediate response on each answer. Use the exam mode for a timed exam — just like the real one, and see your grade when finished. ® Craftsman Book Company 6058 Corte del Cedro, Carlsbad, CA 92011 Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com Buy this title complete here: http://bit.ly/2yP4hOJ Acknowledgments We are indebted to several individuals and organizations who helped in the preparation of this book. One group is the electrical examining boards throughout the United States. A list of these organiza- tions appears in Appendix I of this book. The following were especially helpful in furnishing refer- ence materials or else helping with the production. National Fire Protection Association® (NFPA®) C. Keeler Chapman, Artwork John D. Lee, Sr., Question Verification & Code Consultant Portions of this publication are reprinted with permission from NFPA 70®-2017 National Electrical Code®, Copyright® 2016 National Fire Protection Association, Quincy, MA 02169. This reprinted material is not the complete and official position of the National Fire Protection Association on the referenced subject, which is represented only by the standard in its entirety. National Electrical Code® and NEC® are registered trademarks of the National Fire Protection Association, Inc., Quincy, MA 02169. Looking for other construction reference manuals? Craftsman has the books to fill your needs. Call toll-free 1-800-829-8123 or write to Craftsman Book Company, 6058 Corte del Cedro, Carlsbad, CA 92011 Visit our Web site: www.craftsman-book.com Online Preview Library of Congress Cataloging-in-Publication Data Names: Traister, John E., author. | Adair, Rob, 1946- editor. Title: Electrician’s exam preparation guide : based on the 2017 NEC(r) / by John E. Traister revised and updated by Rob Adair. Description: Tenth edition. | Carlsbad, CA : Craftsman Book Company, [2019] | Includes bibliographical references and index. Identifiers: LCCN 2019021329 | ISBN 9781572183520 (pbk. : alk. paper) Subjects: LCSH: Electrical engineering--Examinations, questions, etc. | Electrical engineering--Examinations--Study guides. | Electricians--Licenses--United States. | National Fire Protection Association. National Electrical Code (2019) Classification: LCC TK169 .T73 2019 | DDC 621.319/24076--dc23 LC record available at https://lccn.loc.gov/2019021329 ©2019, 2014, 2011, 2008, 2005, 2002, 1999, 1996, 1993, 1991 Craftsman Book Company Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com Buy this title complete here: http://bit.ly/2yP4hOJ Contents Introduction .............................................. 5 1 Electrical Systems — General Requirements ..............13 2 Electrical Calculations ...............................37 3 Branch Circuits and Feeders ...........................59 4 Electric Services ....................................89 5 Distribution Equipment .............................117 6 Overcurrent Protection ..............................137 7 Utilization Equipment ..............................163 8 Measuring and Testing ..............................183 9 Electric Motors and Motor Controls ...................203 10 Special Occupancies ................................223 11 MiscellaneousOnline Applications Preview ..........................245 12 Transformers and Capacitors .........................257 13 Electrical Drawings .................................269 14 Final Examination ..................................289 Using the Interactive Study Center Download ..................340 Appendix I State Contractor’s Examination Offices ..........342 Appendix II Answers to Final Exam Questions ...............345 Index ............................................346 Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com Buy this title complete here: http://bit.ly/2yP4hOJ Online Preview Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com Buy this title complete here: http://bit.ly/2yP4hOJ Introduction — How to Use This Book If you have been installing electrical systems for You can pass any electrician’s exam, but only some time as an apprentice, helper, or unlicensed if you study carefully each of the questions in this electrician, this book is for you. The information book. What you learn from studying is the foun- between the covers of this book will cover every dation on which your professional career will be subject that is likely to appear on most electri- built. cian’s exams — either state or local. Understand also that the licensing authority If you are just starting your career as an appren- isn’t the enemy. They aren’t trying to keep you tice electrician, this book is also for you. It begins out of the electrical business. They only want to at the beginning. You will have no trouble under- set some basic standards and be assured that your standing what is explained here. Read each page installations will be done in a workmanlike man- ner and in accordance with the latest edition of the carefully and you will soon earn the recognition ® ® ® that licensed professionals are entitled to in our National Electrical Code (NEC ). The public present society. The financial rewards are another should be assured that all licensed electricians factor which will make your efforts worthwhile. are knowledgeable professionals. That’s good for society in general, and it’s good for all profes- In most communities, any electrician working sional electricians and electrical contractors who without supervision must be licensed. For larger live and work in your area. electrical construction projects, many states now require the certification of journeyman electricians Unfortunately, there are too many applicants as well as specialty electricians, such as splicers of who are not well prepared when they sit down to high-voltage cable. This trend is certain to contin- take the electrician’s exam. Taking an electrician’s ue as legislatures recognize the need to protect the exam without doing a good job of preparation is a public from incompetents. The state of Virginia, complete waste of time — both yours and that of for example, is now requiring all persons doing the licensing authority. The results are predictable. electrical work to be licensed. Don’t make that mistake. Online PreviewThe most common reason for failure is that the Most licensing authorities prepare demanding applicant didn’t study properly because he didn’t exams that are a good test of the examinee’s know how, or studied the wrong material. This knowledge. These exams help to guarantee that book should put an end to that excuse. You have electrical systems installed in building construc- in your hands the most complete, easiest-to-use, tion will meet minimum standards for protecting most practical reference available for preparing the lives and health of building occupants (and to take the tests that are actually given today. the buildings themselves) for many years to come. Read this book carefully, examine every question, This also helps to keep insurance rates to a mini- understand all the answers. Do this, and there’s no mum. way you will be unprepared on examination day. Begin your study for any electrician’s exam You are almost certain to score high. with two points in mind: All the common questions and answers are here, but just knowing the answer is not always enough. Take the exam seriously Sometimes it is just as important to understand Every minute spent studying this book why a particular answer is correct. That’s why increases your chances of passing the exam many answers include a quotation or reference 5 Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com Buy this title complete here: http://bit.ly/2yP4hOJ Electrician’s Exam Preparation Guide NEC Termin ology There are two basic types of rules in the NEC: mandatory rules and advisory rules. Here is how to recognize the two types of rules and how they relate to all types of electrical systems. Mandatory rules: All mandatory rules have the terms shall or shall not in them. The terms mean must. If a rule is mandatory, you must comply with it. Permissive rules: All advisory rules have the terms shall be permitted or shall not be required in them. The terms in this case mean recommended but not necessarily required. If a rule is advisory, com- pliance is discretionary. If you want to comply with it, do so. But you don’t have to if you don’t want to. Be alert to local amendments to the NEC. Local ordinances may amend the language of the NEC, changing it from should to shall. This means that you must do in that county or city what may only be recommended in some other area. The office that issues building permits will either sell you a The National Electrical Code (NEC) has become the Bible of the electrical industry copy of the code that’s enforced in that county or tell you where the code is sold. Learning the Layout of the NEC Begin
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