Codes & Standards

 

Essential to the work of the electrical contractor is knowledge of the National Electrical Code, the National Electrical Installation Standards and additional standards and codes administered by the National Fire Protection Association, the Occupational Safety and Health Administration and others. Here is a list of all our articles on codes and standards listed chronologically by issue date. 

Jim Dollard has an extensive background in codes and standards. If you have a query about the National Electrical Code (NEC), Jim will help you solve it. Questions can be sent to codefaqs@gmail.com. Answers are based on the 2014 NEC.
 Kitchen countertop receptacle height


Many of the articles I write for ELECTRICAL CONTRACTOR originate as questions from people who read my columns or attend my workshops.

Article 210 in the National Electrical Code (NEC) covers branch circuits, with the exception of circuits that supply motor loads only. Article 430 covers these branch circuits, and Part II covers motor-circuit conductors.

A reader wrote in that an inspector had turned down one of his projects, citing the installation was in violation of National Electrical Code (NEC) 517.13(A) and (B) because Type MC cable was installed in the patient-care areas.

More on Codes & Standards

 
Branch Circuits, Overcurrent Protection, Grounding, and More
by Staff |

CODE CITATIONS: Article 100—Definitions; Article 210—Branch Circuits; Article 230—Services; Article 240—Overcurrent Protection; Article 250—Grounding; Article 347—Rigid Nonmetallic Conduit; Article 430—Motors, Motor Circuits, and Controllers; and Article 702—Optional Standby Systems

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The Differences between GFCI, IDCI, and GFPE
by Staff |

The most important thing to understand about ground fault protection devices is that one type is to protect personnel and the other is to protect electrical equipment, the latter having different trip levels for different types of protection.

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Grounding Separately Derived Systems: Part 1 - The Basics
by Staff |

A common task for electrical system designers is to design separately derived systems. It is difficult to imagine a building that does not contain a separately derived system.

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Why Does the Code Mention Design E Motors If No One Makes Them?
by Staff |

My business is to conduct seminars on the National Electrical Code (NEC), grounding and bonding, and electrical safety. Even before it went into effect, questions arose in the seminars about coverage of Design E motors in the 1996 NEC.

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Dedicating Equipment Space
by Staff |

In the 1999 National Electrical Code (NEC), Section 110-26, Spaces About Electrical Equipment, consists of 1996 Section 110-16 plus Subsection (f), Dedicated Equipment Space, relocated from 1996 Section 384-4.

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Safely Installing Electrical and Service Panels in Residential Closets
by Staff |

This month’s column addresses controversial issues that have come up in NECA’s online “Code Question of the Day.” The author gives his opinion in his answers and invites your comments on the material discussed. Please e-mail your comments to brooke@necanet.org.

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