McPartland Brian J. - McGraw-Hill National Electrical Code 2008 Handbook

McGraw-Hills
NATIONAL ELECTRICAL CODE 2008 HANDBOOK

About the Authors

Brian J. McPartland is an electrical consultant and educator who teaches the nuts and bolts of the National Electrical Code. He is coauthor of McGraw-Hills National Electrical CodeHandbook, 25th Edition.

Joseph F. McPartland is an electrical contracting consultant and coauthor of McGraw-Hills National Electrical CodeHandbook, 25th Edition.

Frederic P. Hartwell is a working electrician, President of Hartwell Electrical Services, Inc., and has been certified by the International Association of Electrical Inspectors as a Certified Master Electrical Inspector. He is the senior member of NEC CMP 9. He is coauthor of McGraw-Hills American Electricians Handbook, 15th Edition.

Twenty-Sixth Edition

Based on the Current 2008
National Electrical Code

by

Brian J. McPartland

Joseph F. McPartland

and

Frederic P. Hartwell

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ISBN: 978-0-07-154655-3
MHID: 0-07-154655-3

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Although every effort has been made to make the explanation of the Code accurate, neither the Publisher nor the Author assumes any liability for damages that may result from the use of the Handbook.

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The 26th edition of McGraw-Hills National Electrical CodeHandbook has been thoroughly revised to reflect the changes given in the 2008 National Electrical Code. This is a reference book of commentary, discussion, and analysis on the most commonly encountered rules of the 2008 National Electrical Code. Designed to be used in conjunction with the 2008 NE Code book published by the National Fire Protection Association, this Handbook presents thousands of illustrationsdiagrams and photosto supplement the detailed text in explaining and clarifying NEC regulations. Description of the background and rationale for specific Code rules is aimed at affording a broader, deeper, and readily developed understanding of the meaning and application of those rules. The style of presentation is conversational and intended to facilitate a quick, practical grasp of the ideas and concepts that are couched in the necessarily terse, stiff, quasi-legal language of the NEC document itself.

This Handbook follows the order of articles as presented in the NE Code book, starting with Article 90 and proceeding through Appendix. The Code rules are referenced by section numbers (e.g., 250.138. Cord- and Plug-Connected Equipment.). This format ensures quick and easy correlation between NEC sections and the discussions and explanations of the rules involved. This companion reference to the NEC book expands on the rules and presents common interpretations that have been put on the many difficult and controversial Code requirements. A user of this Handbook should refer to the NEC book for the precise wording of a rule and then refer to the corresponding section number in this Handbook for a practical evaluation of the details.

Because many NEC rules do not present difficulty in understanding or interpretation, not all sections are referenced. But the vast majority of sections are covered, especially all sections that have proved troublesome or controversial. And particular emphasis is given to changes and additions that have been made in Code rules over recent editions of the NEC. Although this new edition, McGraw-Hills National Electrical Code