By (NFPA) National Fire Protection Association
Secure, effective, code-compliant electric installations are made easy with the newest ebook of this commonly renowned source. Like its hugely profitable prior variations, the NEC 2011 guide combines reliable, thorough, research-based content material with the instruments you must construct an in-depth knowing of an important issues. It offers the complete textual content of the up-to-date code rules along specialist observation from code experts, delivering code reason, clarifications for brand new and up to date ideas, and useful, real-world recommendation on easy methods to practice the code. New to the 2011 version 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 platforms, and extra. This profitable mix has created a invaluable reference for these in or coming into careers in electric layout, set up, inspection, and protection.
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Extra resources for National Electrical Code 2011 Handbook
Festoon Lighting. A string of outdoor lights that is suspended between two points. 6(B). Ground-Fault Protection of Equipment. A system intended to provide protection of equipment from damaging line-to-ground fault currents by operating to cause a disconnecting means to open all ungrounded conductors of the faulted circuit. This protection is provided at current levels less than those required to protect conductors from damage through the operation of a supply circuit overcurrent device. Fitting.
A reliable conductor to ensure the required electrical conductivity between metal parts required to be electrically connected. The term bonding jumper was revised to bonding conductor or jumper for the 2011 Code. Either of the two terms bonding conductor or bonding jumper may be used. The term bonding jumper may be interpreted to imply a short conductor. However, some bonding jumpers may be several feet in length. The primary purpose of a bonding conductor or jumper is to ensure electrical conductivity between two conductive bodies, such as between a box and a metal raceway.
Accessible (as applied to wiring methods). Capable of being removed or exposed without damaging the building 17 Article 100 ● Definitions (c) Installation of busway switches ON OFF (b) Busway installation ON Busway OFF Chain- or rope-operated switch (d) Switch installed adjacent to motor Hookstickoperated switch Junction box ON ON OFF OFF (e) Hookstick-operated isolating switch (a) Manually operated disconnect switch 6 ft 7 in. max. 1 Example of a busway and of switches considered accessible even if located above the 6 ft 7 in.
National Electrical Code 2011 Handbook by (NFPA) National Fire Protection Association