By Brian McPartland, Joseph McPartland, Frederic Hartwell
The number one advisor to the 2008 NEC® to make sure that electric paintings Passes Inspection at the First test! thoroughly revised and up to date to mirror all 2008 Code alterations, McGraw-Hill's nationwide electric Code® 2008 instruction manual, twenty sixth variation offers the basic put-the-code-into-practice tips that clients require within the box and within the place of work. An bestseller for over eighty five years, this vintage instruction manual is helping decipher and interpret new Code adjustments and hard and arguable ideas. With the hot addition of Frederic P. Hartwell to the writer staff, this time-tested reference has been carefully revised and rewritten to hide the entire details had to meet 2008 Code requisites. masking each subject within the 2008 Code, the insurance levels from grounded conductors, department circuits, feeders, surge arresters, wiring tools, cables, conduits, and switches…to harmful destinations, emergency platforms, communications circuits, and product defense criteria. McGraw-Hill's nationwide electric Code® 2008 instruction manual, twenty sixth version encompasses a bind-in card with a code that permits clients to obtain the searchable ebook and the subsequent new assurance: New ideas, terminology, and definitions that adjust key grounding recommendations New ideas for GFCIs and AFCIs hearth pumps fix storage quarter classifications sunlight photovoltaic platforms, together with software interactive inverters broad insurance of the way to measurement conductors less than all loading stipulations severe operations strength structures (COPS)-the new Article 708 on hardened amenities inside of this Practice-Oriented consultant to the 2008 NEC® • necessities for electric Installations • department Circuits • Feeders • providers • Surge Arresters • Wiring tools • Cables • Conduits • Tubing • Busways • Wireways • Raceways • Fixture Wires • Switches • home equipment • turbines • Capacitors • garage Batteries • unsafe destinations • transitority Wiring • Emergency structures • Communications Circuits • Tables • Examples • and masses extra!
Read or Download McGraw-Hill National Electrical Code 2008 Handbook, 26th Ed. (Mcgraw Hill's National Electrical Code Handbook) PDF
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Extra info for McGraw-Hill National Electrical Code 2008 Handbook, 26th Ed. (Mcgraw Hill's National Electrical Code Handbook)
Example text
It is not the intent of the National Electrical Code to include the detailed requirements for internal wiring of electrical equipment. Such information is usually contained in individual standards for the equipment concerned. Note that Annex A at the end of the Code book includes the recognized product standards that the testing laboratories use to evaluate the products for which NEC rules require listings. 9 INTRODUCTION 13 The last sentence does not intend to take away the authority of the local inspector to examine and approve equipment, but rather to indicate that the requirements of the National Electrical Code do not generally apply to the internal construction of devices which have been listed by a nationally recognized electrical testing laboratory.
So is an apartment in an apartment house or a condominium unit. ” Any “dwelling unit” must include all the required elements shown in Fig. 100-19. 100 DEFINITIONS 31 Fig. 100-19. ” See Fig. 100-20. Feeder: A feeder is a set of conductors which carry electric power from the service equipment (or from a transformer secondary, a battery bank, or a generator switchboard where power is generated on the premises) to the overcurrent protective devices for branch circuits supplying the various loads.
A single loose locknut or forgotten setscrew could easily generate a sustained arc in such a case before overcurrent devices operate, with severe consequences and a dangerous voltage on the intervening enclosures while the failure is in progress. When the insulation failure occurs on a grounded system, equipment grounding serves to ensure adequate current flow to cause the affected circuit’s overcurrent protective device to “open,” usually in the instantaneous 100 DEFINITIONS 35 portion of the overcurrent device tripping curve.