ELECTRICIAN’S EXAM - Craftsman Book

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Buy this complete title here: https://goo.gl/UvNcoQ 59.50iewELECTRICIAN’SEXAMevPREPARATION GUIDEPrNinth EditionBased on the 2014 NEC nlinebyJohn E. TraisterORevised and Updated byDale C. BricknerIncludes inside the back cover:Inside the back cover of this book you’ll find a software download certificate. Toaccess the download, follow the instructions printed there. Contains all the questions in the book in interactive self-test software that makesstudying almost fun. Each answer is explained, and shows the pertinent NEC section at the click ofthe 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 yourgrade when finished. Craftsman Book Company6058 Corte del Cedro, Carlsbad, CA 92011Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

Buy this complete title here: https://goo.gl/UvNcoQAcknowledgmentsI am indebted to several individuals and organizations who helped in the preparation of this book. Onegroup is the electrical examining boards throughout the United States. A list of these organizationsappears in Appendix I of this book. The following were especially helpful in furnishing referencematerials or else helping with the production.National Fire Protection Association (NFPA )C. Keeler Chapman, ArtworkNicole L. Brickner, Typist and OrganizerwJoe A. Fintz, Final Exam VerificationieRon Murray, Code ConsultantFloyd Richards, Question Verification & Code ConsultantPrevPortions of this publication are reprinted with permission from NFPA 70 -2014 National ElectricalCode , Copyright 2013 National Fire Protection Association, Quincy, MA 02169. This reprintedmaterial is not the complete and official position of the National Fire Protection Association on thereferenced subject, which is represented only by the standard in its entirety.eNational Electrical Code and NEC are registered trademarks of the National Fire ProtectionAssociation, Inc., Quincy, MA 02169.nlinLooking for other construction reference manuals?OCraftsman has the books to fill your needs. Call toll-free 1-800-829-8123or write to Craftsman Book Company, 6058 Corte del Cedro, Carlsbad, CA 92011 fora FREE CATALOG of over 100 books, including how-to manuals,annual cost books, and estimating software.Visit our Web site: www.craftsman-book.comLibrary of Congress Cataloging-in-Publication DataTraister, John E.Electrician's exam preparation guide : based on the 2014 NEC / by John E.Traister, revised and updated by Dale C. Brickner. -- Ninth edition.pages cmIncludes bibliographical references and index.ISBN 978-1-57218-303-2 (alk. paper)1. Electrical engineering--Examinations, questions, etc. 2. Electricalengineering--Examinations--Study guides. 3. Electricians--Licenses--UnitedStates. 4. National Fire Protection Association. National Electrical Code(2014) I. Brickner, Dale C. II. Title.TK169.T73 2014621.319'24076--dc232014002984 2014, 2011, 2008, 2005, 2002, 1999, 1996, 1993, 1991 Craftsman Book CompanyBuy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

Buy this complete title here: https://goo.gl/UvNcoQContentsIntroduction. 51Electrical Systems — General Requirements . . . . . . . . . . . . . . . 13Chapter2Electrical Calculations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37Chapter3Branch Circuits and Feeders . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59Chapter4Electric Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89Chapter5Distribution Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117Chapter6Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137Chapter7Utilization Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 163Chapter8Measuring and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183Chapter9ieevPrenlinElectric Motors and Motor Controls . . . . . . . . . . . . . . . . . . . . . 203Special Occupancies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223OChapter 10wChapterChapter 11Miscellaneous Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245Chapter 12Transformers and Capacitors . . . . . . . . . . . . . . . . . . . . . . . . . . 257Chapter 13Electrical Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 269Final Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 289Using the Interactive Study Center Download . . . . . . . . . . . . . . . . . . . . . . . . . . 340Appendix IState Contractor’s Examination Offices . . . . . . . . . . . . . . . . . . 342Appendix IIAnswers to Final Exam Questions . . . . . . . . . . . . . . . . . . . . . . . 345Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 346Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

OnlinePreviewBuy this complete title here: https://goo.gl/UvNcoQBuy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

Buy this complete title here: https://goo.gl/UvNcoQIntroduction —How to Use This BookwUnderstand also that the licensing authorityisn’t the enemy. They aren’t trying to keep you outof the electrical business. They only want to setsome basic standards and be assured that yourinstallations will be done in a workmanlike manner and in accordance with the latest edition of theNational Electrical Code (NEC ). The publicshould be assured that all licensed electricians areknowledgeable professionals. That’s good forsociety in general, and it’s good for all professional electricians and electrical contractors who liveand work in your area.PrevIf you are just starting your career as an apprentice electrician, this book is also for you. It beginsat the beginning. You will have no trouble understanding what is explained here. Read each pagecarefully and you will soon earn the recognitionthat licensed professionals are entitled to in ourpresent society. The financial rewards are anotherfactor which will make your efforts worthwhile.You can pass any electrician’s exam, but only ifyou study carefully each of the questions in thisbook. What you learn from studying is the foundation on which your professional career will bebuilt.ieIf you have been installing electrical systems forsome time as an apprentice, helper, or unlicensedelectrician, this book is for you. The informationbetween the covers of this book will cover everysubject that is likely to appear on most electrician’s exams — either state or local.OnlineIn most communities, any electrician workingwithout supervision must be licensed. For largerelectrical construction projects, many states nowrequire the certification of journeyman electriciansas well as specialty electricians, such as splicers ofhigh-voltage cable. This trend is certain to continue as legislatures recognize the need to protect thepublic from incompetents. The state of Virginia,for example, is now requiring all persons doingelectrical work to be licensed.Most licensing authorities prepare demandingexams that are a good test of the examinee’sknowledge. These exams help to guarantee thatelectrical systems installed in building construction will meet minimum standards for protectingthe lives and health of building occupants (and thebuildings themselves) for many years to come.This also helps to keep insurance rates to a minimum.Begin your study for any electrician’s examwith two points in mind: Take the exam seriously Every minute spent studying this bookincreases your chances of passing the examUnfortunately, there are too many applicantswho are not well prepared when they sit down totake the electrician’s exam. Taking an electrician’sexam without doing a good job of preparation is acomplete waste of time — both yours and that ofthe licensing authority. The results are predictable.Don’t make that mistake.The most common reason for failure is that theapplicant didn’t study properly because he didn’tknow how, or studied the wrong material. Thisbook should put an end to that excuse. You have inyour hands the most complete, easiest-to-use,most practical reference available for preparing totake the tests that are actually given today. Readthis book carefully, examine every question,understand all the answers. Do this, and there’s noway you will be unprepared on examination day.You are almost certain to score high.All the common questions and answers are here,but just knowing the answer is not always enough.Sometimes it is just as important to understandwhy a particular answer is correct. That’s whymany answers include a quotation or reference5Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

Buy this complete title here: https://goo.gl/UvNcoQElectrician’s Exam Preparation GuideNEC TerminologyThere are two basic types of rules in the NEC:mandatory rules and advisory rules. Here is how torecognize the two types of rules and how theyrelate to all types of electrical systems.PreviewMandatory rules: All mandatory rules have theterms shall or shall not in them. The terms meanmust. If a rule is mandatory, you must comply with it.Permissive rules: All advisory rules have theterms shall be permitted or shall not be required inthem. The terms in this case mean recommended butnot necessarily required. If a rule is advisory, compliance is discretionary. If you want to comply withit, do so. But you don't have to if you don't want to.Be alert to local amendments to the NEC. Localordinances may amend the language of the NEC,changing it from should to shall. This means thatyou must do in that county or city what may onlybe recommended in some other area. The officethat issues building permits will either sell you acopy of the code that’s enforced in that county ortell you where the code is sold.nlineThe National Electrical Code (NEC) has become theBible of the electrical industryOsection from the National Electrical Code.Sometimes you will find notes or clarificationsunder the answer when there is an important pointyou might miss.The National Electrical Code is used in practically every area of the United States for inspectingelectrical systems in building construction. Mostof the questions appearing on electrician’s examswill come directly from Articles and Sections ofthe latest NEC. Therefore a brief review of theindividual NEC sections that apply to electricalsystems is in order. Sample questions concerningall sections of the NEC may be found in the chapters to follow.This book, however, is not a substitute for theNEC. You need a copy of the most recent editionand it should be kept handy at all times. The moreyou know about the code, the more you are likelyto refer to it.Learning the Layout of the NECBegin your study of the NEC with Articles 100and 110. These two articles have the basic information that will make the rest of the NEC easier tounderstand. Article 100 defines terms you willneed to understand when you apply the code.Article 110 gives the general requirements forelectrical installations. Read these two articlesover several times until you are thoroughly familiar with all the information they contain. It’s timewell spent.Once you’re familiar with Articles 100 and 110,you can move on to the rest of the code. There areseveral key sections you will use often in servicingelectrical systems. Let’s discuss each of theseimportant sections.Wiring and ProtectionChapter 2 of the NEC discusses wiring designand protection, the information electrical technicians need most often. It covers the use and identification of grounded conductors, branch circuits,feeders, calculations, services, overcurrent protection, grounding, bonding and surge protection. This6Buy similar Craftsman Book Co. titles here: https://www.Craftsman-Book.com

Buy this complete title here: https://goo.gl/UvNcoQIntroduction — How to Use This BookEquipment for General UseChapter 4 of the NEC begins with the use andinstallation of flexible cords and cables, includingthe trade name, type, letter, wire size, number ofconductors, conductor insulation, outer coveringand use of each. The chapter also includes fixturewires, again giving the trade name, type, letter andother important details.Article 404 covers the switches you will use tocontrol electrical circuits.Article 406 covers receptacles and convenienceoutlets used to connect portable equipment to electric circuits. Get the manufacturers’ catalogs onthese items. They will provide you with detaileddescriptions of each of the wiring devices.Article 408 covers switchboards, switchgearand panelboards, including their location, installation methods, clearances, grounding and overcurrent protection.Article 410 on lighting fixtures is especiallyimportant. It gives installation procedures for fixtures in specific locations. For example, it coversfixtures near combustible material and fixtures inclosets. The NEC does not describe the number offixtures needed in a given area to provide a certainamount of illumination.Article 430 covers electric motors, includingmounting the motor and making electrical connections to it.Articles 440 through 460 cover air conditioningand heating equipment, transformers and capacitors.Article 480 gives most requirements related tobattery-operated electrical systems. Storage batteriesPrevWiring Methods and MaterialsChapter 3 has the rules on wiring methods andmaterials. The materials and procedures to use ona particular system depend on the type of buildingconstruction, the type of occupancy, the locationof the wiring in the building, the type of atmosphere in the building or in the area surrounding thebuilding, mechanical factors and the relative costsof different wiring methods.wChapter 2 is also a “how-to” chapter. It explainsho

Electrician's exam preparation guide : based on the 2014 NEC / by John E. Traister, revised and updated by Dale C. Brickner. -- Ninth edition. pages cm Includes bibliographical references and index. ISBN 978-1-57218-303-2 (alk. paper) 1. Electrical engineering--Examinations, questions, etc. 2. Electrical engineering--Examinations--Study guides. 3. Electricians--Licenses--United States. 4 .