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. 

During a recent National Electrical Code (NEC) training program, inquiries about ground-fault protection of equipment (GFPE) were raised.

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.
 Pull-through angle connectors?


Some photovoltaic (PV) inverter manufacturers have designed and built transformer-less inverters to add to their existing line of transformer-type inverters for installation in the United States. Transformer-less inverters have been popular in Europe for quite some time.

Article 430 of the National Electrical Code (NEC) covers motors, motor branch-circuit and feeder conductors, motor branch-circuit and feeder protection, motor-overload protection, motor-control circuits, motor controllers, and motor-control centers.

More on Codes & Standards

 
Installing Transformers in Special Situations
by Staff |

The column this month will cover questions about transformer installations that were the subject of concern to subscribers to NECA’s on-line “Code Question of the Day.” All answers are based on the current 1999 edition of the National Electrical Code (NEC); however, beginning with this month’s colum

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Article 370 - Pull and Junction Boxes
by Staff |

370-28 Pull and Junction Boxes

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Branch Circuit, Feeder, and Service Calculations; Overcurrent Protection; Grounding; IT Equipment; and Water-intensive Installations
by Staff |

CODE CITATIONS Article 210—Branch Circuits; Article 220—Branch-Circuit, Feeder, and Service Calculations; Article 240—Overcurrent Protection; Article 250—Grounding; Article 645—Information Technology Equipment; and Article 680—Swimming Pools, Fountains, and Similar Installations

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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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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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