Electrical Wiring Commercial, 14th edition pdf.
Preface of Electrical Wiring Commercial, 14th edition book:
The fourteenth edition of Electrical Wiring—Commercial is based on the 2011 National Electrical Code.
* This new edition thoroughly and clearly explains the NEC changes that relate to typical commercial wiring. The National Electrical Code is used as the basic standard for the layout and construction of electrical systems. To gain the greatest benefit from this text, the learner must use the National Electrical Code on a continuing basis. State and local codes may contain modifications of the National Electrical Code to meet local requirements.
The instructor is encouraged to furnish students with any variations from the NEC, as they affect this commercial installation in a specific area. This book takes the learner through the essential minimum requirements as set forth in the National Electrical Code for commercial installations. In addition to Code minimums, the reader will find such information above and beyond the minimum requirements. The commercial electrician is required to work in three common situations: where the work is planned in advance, where there is no advance planning, and where repairs are needed.
The first situation exists when the work is designed by a consulting engineer or by the electrical contractor as part of a design/build project. In this case, the electrician must know the installation procedures, be able to read and follow the plans for the project, be able to understand and interpret specifications, and must know the applicable Code requirements. The second situation occurs either during or after construction when changes or remodeling are required. The third situation arises any time after a system is installed. Whenever a problem occurs with installation, the electrician must understand the operation of all equipment included in the installation in order to solve the problem. And as previously stated, all electrical work must be done in accordance with the National Electrical Code and any local electrical codes.
The electrician must understand that he or she is a part of a construction team with the goal of getting the project completed on time and within the budget. Cooperation and “ pulling your load” are the keys to success. The general contractor and owner count on every trade and specialist to get the components on the job when they are needed and install them so as to keep the project moving ahead smoothly.
When the electrician is working on the initial installation or is modifying an existing installation, the circuit loads must be determined. Thorough explanations and numerous examples of calculating these loads help prepare the reader for similar problems on the job. The text and assignments make frequent reference to the Commercial Building drawings at the back of the book.
The electrical loads (lighting, outlets, equipment, appliances, etc.) were selected to provide the reader with experiences that he or she would encounter when wiring a typical commercial building. The authors also carry many calculations to a higher level of accuracy as compared to the accuracy required in many actual job situations. This is done to demonstrate the correct method according to the National Electrical Code. Then, if the reader and/or the instructor wish to back off from this level, based upon installation requirements, it can be done intelligently.
including explanations of the wiring applications. Revisions to the NEC between the 2008 and 2011 editions are carefully identified.
• Review Questions at the end of each chapter allow readers to test what they have learned in each chapter and to target any sections that require further review.