Article 110, requirements for electrical installations iaei. And with the 2014 edition of the nec, it got even longer. The handbooks commentary text is colored blue to differentiate it from the code text. Unfortunately, the nfpa intentionally makes this free online version difficult to find and use. The book includes 10 quizzes of 100 questions each that are in code order and take you through each of the nine chapters of the nec. All conductors of a multiwire branch circuit shall originate from the same panelboard or similar distribution equipment. In the last issue we discussed thenecrequirements up through 110.
For more information on this or other training products, visit. This ensures gfci protection regardless of whether the boat hoist is cordandplugconnected or hardwired. It seemed to stop growing there, remaining at about 12 pages. Solar photovoltaic systems covered by this article may be interactive. The ampacity of branchcircuit conductors and overcurrent devices for pool or outdoor spa and hot tub water heaters must not be less than 125. Nfpa 70, national electrical code nec, 2011 edition kindle edition by national fire protection association nfpa. Failing to meet nec requirements can carry serious criminal andor civil consequences both to firms and to individuals. What part of article 250 would you find the correct method of bonding enclosures. The national electrical code has one purpose only, and thats the practical safeguarding of persons and property from hazards arising from the use of. The nec handbook is designed explicitly for electrical professionals. Please use the 2011 code book to answer the following questions, which are based on the 2011 nec. Branchcircuit, feeder, and service calculations article 220 branchcircuit, feeder, and service calculations i.
A multiwire circuit shall be permitted to be considered as multiple circuits. The nec is used in chile, ecuador, peru, and the philippines. With rare exceptions, the nec does not address issues of convenience, efficiency, or adequacy for good service or future expansion. If you make a mistake, read the feedback and answer again. National electric code clear workspace requirements. This illustration identifies the components and introduces the basic rules for an. In most of the united states, the national electrical code nec is used to specify the installation requirements for outdoor antenna systems.
How to get a free copy of the 2011 national electric code. All conductors of a multiwire branch circuit shall originate from the. This article applies to solar pv systems, other than those covered by article 691, including the array circuits, inverters, and controllers for such systems. Nfpa 70, national electrical code nec, 2011 edition. Article 90 introduction to the national electrical code. The goal of this course is to learn how to design lightning protection systems. An n next to an article title indicates that the entire article is new. Nec article 90 questionsanswers flashcards quizlet. However, they do make available a limiteduse online copy of the 2011 nec. In all cases, the working space must be of sufficient width, depth, and height to permit all equipment doors to open 90. Antenna system bonding and grounding requirements in the usa.
Use features like bookmarks, note taking and highlighting while reading nfpa 70, national electrical code nec, 2011 edition. Nec chapter 1 article 100 definitions electrician central. Conductor ampacity based on the 2011 national electrical code ampacity based on nec table 310. This article covers the installation of wiring and equipment in the areas comprising fixed or floating piers, wharves, docks, and other areas in marinas, boatyards, boat basins.
This article contains only those definitions essential to the proper application of this code. The purpose of the nec practice questions book is to create an ideal environment to test your nec knowledge. A says the purpose of the nec is the practical safeguarding of people and property from hazards arising from the use of electricity. Article 555 marinas, boatyards, and commercial and. Download it once and read it on your kindle device, pc, phones or tablets. In the rapidly evolving electrical industry, the nec handbook helps you be prepared. The nfpa recovers part of its code development costs by selling code books. Based on the 2014 nec mike holts illustrated guide to. Nec 2011 article 90 introduction article 90 the oklahoma adopted nec 2011, includes the following preamble at the very beginning of the chapter.
Article 90 preface 2017 nec new sections, tables, and figures are indicated by a bold, italic n in a gray box to the left of the new material. Article 90 of the national electrical code nec a one hour discussion on article 90 introduction of the 2017 national electrical code nec. The nec is not a design guide, though it is a safety standard. The national electric code nec is published by the national fire protection association nfpa. Article 90 introduction to the nec by benjamin felt on prezi. In general, only those terms that are used in two or more articles are defined in article. Article 90 opens by saying the nec isnt intended as a design specification or instruction manual. The height of the working space in front of equipment cant be less than 6.
Definition actions that are allowed but not required, are normally used to describe options or alternative methods, and are characterized by the use of the terms shall be permitted or shall not be required. The complete nfpa 70, nec, index is also included for easy reference to the code information you require. Groundingandbonding nationalelectricalcode article250 byjim. For example, article 90 has long made it clear the nec is not intended as design specification or instruction manual. Article menu access options download pdf pdf full article content list abstract introduction aim article menu access options download pdf pdf full article content list abstract introduction aim article 690 nec article 35 article 450 article 5 nec article 336 nec article 551 article 5 nec article 90. Mike holts illustrated guide to understanding the nec. National electrical code 2011 pocket guide for residential.
Louisiana department of transportation and development bridge design section. Conductor ampacity based on the 2011 national electrical code. Buy nfpa 70, national electrical code nec handbook, 2011. Article 680 swimming pools, spas, hot tubs, fountains, and. Installations in ships, watercraft other than floating buildings, railway rolling stock, aircraft, or automotive vehicles other than mobile homes and recreational vehicles. Article 760 is one of the longer articles in the nec. Apply the 2011 nec code book with the single most valuable electrical book for nec users. It was issued by the standards council on august 4, 2016, with an effective date of.
It is not intended to include commonly defined general terms or commonly defined technical terms from related codes and standards. New text has been added to specify what types of installations can be included under other electrical agreements. Branch circuits recognized by this article shall be permitted as multiwire circuits. Where one or more complete paragraphs have been deleted, the deletion is indicated by a bullet. National electrical code 2017 edition this edition of nfpa 70, national electrical code, was prepared by the national electrical code committee and acted on by nfpa at its june association technical meeting held june 16, 2016, in las vegas, nv. Oct 11, 2012 the national electric code nec is published by the national fire protection association nfpa. It is intended to be used as a practical working tool to assist in making the nec as clear. The national electrical code nec style manual is prepared under the guidance of the nec technical correlating committee and is used to advise members of the codemaking panels on the required editorial style and arrangement of the nec.
National electric code clear workspace requirements by joseph douglas, p. Antenna system bonding and grounding requirements in the. It builds your skills section by section and includes over 2,100 nec questions. This handson reference provides the practical solutions and rationale you need to comply with nfpa 70, national electrical code, avoid violations, and answer questions on the job. This workbook printed in full color contains more than 1,300 nec practice questions in code order that follow the 2011 understanding the nec volume 1 textbook along with two random order final exams. Article 555 marinas, boatyards, and commercial and noncommercial docking facilities nfpa 70 2017 nec. Failing to meet nec requirements can carry serious criminal andor civil. This article provides requirements for calculating branchcircuit, feeder, and service loads.
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