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Pocket Guide to the National Electrical Code 2005 (Eighth Edition)

Pocket Guide to the National Electrical Code 2005 (Eighth Edition)

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Book DescriptionPocket Guide to the National Electrical Code is intended for use as a convenient reference guide for all who are involved in the design, installation, inspection, and teaching of electrical installations as well as the manufacture of electrical products that go into these projects. It is intended for the frequent as well as the infrequent user. This book is not intended to replace the National Electrical Code but rather to be used with it. It is intended to provide a reference book containing those topics in the NEC that occur most frequently to the user in his or her work experience. The Code topics are discussed in plain, understandable English. The size of this book is such that it can be carried at all times when it might proveinconvenient to carry a copy of the complete National Electrical Code. This book is arranged in the same order as the National Electrical Code. All chapter and article headings, and almost all paragraph headings, are included. This arrangement ensuresthat cross referencing between this book and the NEC is easy and convenient. It also ensures that one book will provide the necessary information regardless of who is using it. The NEC is not necessarily arranged in the order that one might use it. Depending upon whether you are designing, installing, inspecting, or teaching, the order in which you will use the different topics in the NEC will differ. A book arranged for an installer might not be convenient for the designer. Because the purpose of this book is to compile a handy reference guide in pocket size, the entire National Electrical Code cannot be covered. The topics and parts of articles and paragraphs of the NEC chosen for discussion in this book are those that I feel would be most useful either on a daily basis or as a convenient reference. Less frequently used parts are noted by article or paragraph headings for reference purposes. This arrangement lets you know that even though not covered, those topics do exist in the Code. For convenience in use and reference, certain tables and examples are reproduced by permission of the National Fire protection Association. Included in this book are more than 30 tables taken from Chapters 1 through 8 in the Code. They are found throughout this book in the same location as they appear in the Code. Also included in their entirety are Chapter 9 (Tables), Annex C (Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size), and Annex D (Examples). The material presented in this book is not intended as official interpretations. Official or formal interpretations can be obtained only from the NFPA and through a definite procedure outlined in the Code. It is recommended that the authorities having jurisdiction be consulted. This book refers to the 2005 edition of the National Electrical Code. Guide for the User Pocket Guide has been a handy reference for the electrical designer, installer, and manufacturer for 22 years. The first one was published in 1984, and thisis the 8th edition. Since that time I have had many conversations with the users. They have told me how convenient it is to have all the information in a pocket-size book that can be carried in a shirt pocket, toolbox, glove compartment, or briefcase. having been a field engineer and designer, I wrote the book for this very reason. Since the first edition I have tried to encompass the comments that I have received from the users into editions of the book. In recent years other pocket guides have been written. None of them has been used as long as this one, nor have they included the input from the users over these many years. I have been told that there are many contractors who give a copy to each of their installers. The National Electrical Code is not necessarily arranged in the order that one might use it. A person installing an additional outlet or branch circuit in an existing residence might refer to entirely different sections and paragraphs and in a different order than a contractor installing the electrical system in a multistory office building or an engineer designing the electrical system in a large industrial plant. It would take many different charts or tables to cover all the possibilities that could exist. This book is easy to use because it is arranged in exactly the same order as is the National Electrical Code. The user can look in the Contents for a topic in this book and find it in exactly the same location as in the Code. The user can then see what sections and paragraphs are applicable to the project being worked on. All of the chapter, article, and paragraph headings from the NEC are included in the same order as they are in the NEC . Because this is a pocket guide, not all of the material in the NEC can be covered. If the material required is not covered in this book, then reference to the NEC is easy and convenient. If the user has a special occupancy then it is easy to determine where that information is located by using the Contents. For example, consider the topic of receptacles, cord connectors, and attachment plugs. Information can be found in articles 100, 200, 210, 250, 406, 422, 440, 501, 502, 503, 517, 527, 530, 555, 647, 680, and 720, depending upon what information is required for your project. Different users would refer to different sections and paragraphs in different orders depending upon the user and the project. Reference to the Contents is necessary. The user must determine whether the occupancy of the project falls in the category of a special occupancy, which is located in Chapter 5 (such as a health care occupancy); whether it is special equipment, which is located in Chapter 6 (such as an elevator); whether there are special conditions, which is located in Chapter 7 (such as an emergency system); or whether it is a communications system, which is located in Chapter 8 (such as radio and television equipment). The user can then refer to the rest of the Code for the general information that pertains to almost every installation. The more than 30 tables from Chapters 1 through 8, Chapter 9 (Tables), Annex C (Conduit and Tubing Fill Tables for Conductors and Fixture Wires of the Same Size), and Annex D (Examples), all reproduced from the Code by permission of the National Fire Protection Association, make this Pocket Guide an excellent field companion. The tables from Chapters 1 through 8, Chapter 9, and Annex C are frequently used and have proven to be convenient for the user to consult while on the job. Annex D shows examples of calculations of the electrical loads as well as branch circuit, feeder, and service overcurrent protection sizes and wire sizes for different types of occupancies. These too are convenient to have and refer to. A word of caution: It is strongly recommended that the authorities having jurisdiction be contacted to ensure that the proper electrical code is being used. In order for a code to be law it must be adopted into law by a jurisdiction. As a result there can be a time delay between thepublication of a new edition of the NEC and its adoption into law. Also, the local jurisdiction might adopt an edition of the NEC with some changes and amendments. Marvin J. Fischer 0131480014P03102005