By (NFPA) National Fire Protection Association
Secure, effective, code-compliant electric installations are made basic with the newest book of this greatly renowned source. Like its hugely profitable earlier versions, the NEC 2011 guide combines sturdy, thorough, research-based content material with the instruments you want to construct an in-depth knowing of an important issues. It presents the total textual content of the up-to-date code rules along professional statement from code experts, supplying code motive, clarifications for brand new and up-to-date principles, and functional, real-world suggestion on how one can follow the code. New to the 2011 variation are articles together with first-time Article 399 on October, Overhead Conductors with over six hundred volts, first-time Article 694 on Small Wind electrical structures, first-time Article 840 on Premises Powered Broadband Communications structures, and extra. This profitable mix has created a beneficial reference for these in or coming into careers in electric layout, deploy, inspection, and safeguard.
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Additional resources for National Electrical Code 2011 Handbook
Informational Note: Equipment intended to interrupt current at other than fault levels may have its interrupting rating implied in other ratings, such as horsepower or locked rotor current. Interrupting ratings are essential in the coordination of electrical systems so that available fault currents can be properly controlled. 86. 13 depicts the label of a 1600 amp frame circuit breaker showing the interrupting capacity ratings. ● Definitions An intersystem bonding termination provides a convenient means to comply with the requirements for intersystem bonding and grounding of communication systems.
2011 National Electrical Code Handbook Article 100 ● Definitions Exposed (as applied to live parts). Capable of being inadvertently touched or approached nearer than a safe distance by a person. It is applied to parts that are not suitably guarded, isolated, or insulated. The definition of garage includes the garages for electric vehicles, covered in Article 625. Ground. The earth. This definition applies to energized live parts that must be guarded to avoid accidental contact and injury. 27 for the requirements for guarding live parts.
The conductive path(s) installed to connect normally non–current-carrying metal parts of equipment together and to the system grounded conductor or to the grounding electrode conductor, or both. 27 Article 100 Informational Note No. 1: It is recognized that the equipment grounding conductor also performs bonding. Informational Note No. 118 for a list of acceptable equipment grounding conductors. 30. 12 shows the installation of one type of handhole enclosure. 30 to be “identified” for use in underground systems.