From American Electricians' Handbook, Fourteenth Edition


1. The NEC rules, which are the recommendations of the National Fire Protection Association (NFPA), should be followed in installing all interior wiring. These rules are revised every 3 years, and so it is inadvisable to include them in entirety in this book. A copy of the rules can be obtained form any local inspection bureau or purchased from the NFPA. All statements are made in accordance with the 1996 edition of the Code. The Occupational Safety and Heath Act (OSHA) adopted the 1971 National Electrical Code (initially the 1968 edition) as the electrical standard for employee safety in the workplace. NFPA has written a standard title "Electrical Safety Requirements for Employee Workplaces" that is intended to serve as an enforcement document by compliance officials of the Department of Labor.

2. There are local regulations covering the installation of wiring. in force in many localities, which have been enacted by city and state governments. Sometimes these differ from the Code regulations, and so it is always well to be familiar with all the regulations in force before starting any work. The city and state rules are in reality laws and therefore take precedence over the NEC rules, which of themselves have no legal status.

3. Definitions (National Electrical Code). Definitions that duplicate those in ANSI/IEEE-100 Standard Definitions of Electrical and Electronic Terms, C42, are marked with an asterisk (*). Those not so marked either differ from or are not found in the latest...

Copyright The McGraw-Hill Companies, Inc. 2002 under license agreement with Books24x7

Products & Services
Electrical Contracting Services
Electrical contracting services install and maintain electrical distribution equipment; interior, exterior and municipal lighting; security systems and closed circuit television systems (CCTV); and information technology or IT systems.
Electrical Maintenance Services
Electrical maintenance services perform electrical system testing, efficiency analysis, reliability determination, safety checks, and scheduled shutdowns of electrical assets such as motors, transformers, power supplies, and co-generation systems. The upgrades and repairs that they perform help to prevent costly downtime.
Grounding Indicators
Grounding indicators are used to monitor and verify the presence of grounding systems.
Connector Plates
Connector plates have integral teeth, are manufactured to various sizes and thicknesses, and are designed to laterally transmit loads in wood. They are also known as nail plates, truss plates, metal connector plates, and foundation wall angles.
Heat Detectors
Heat detectors are fire detection devices that sense heat produced by combustion.  Heat detectors can trigger an alarm when they detect rapid temperature rise or reach a preset temperature.

Topics of Interest

PRINCIPLES AND UNITS 1. Explanation of light. Light ( Standard Handbook for Electrical Engineers) may be defined as radiant energy of those wavelengths to which the human eye is sensitive. Figure 10.1...

Codes Affecting Telecommunications Codes address the safety of persons, property, and the environment associated with the telecommunications cabling installation. They include electrical codes,...

American Petroleum Institute API RP 500, "Recommended Practice for Classification of Locations for Electrical Installations at Petroleum Facilities." ANSI/IEEE 43 - "IEEE Recommended Practice for...

The subject of short circuit current ratings, otherwise known as the SCCR, has been gaining increasing international awareness since the publication of the 2005 Edition of ANSI/NFPA 70 by the National...

John Dagenhart, P.E. Professional Engineer, Clapp Research Associates. P.C. 19.1 BASIC INSTALLATION RULES AND INSPECTION Codes (Definitions). The National Electrical Code (NEC) [*] establishes the...