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.
 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.

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

More on Codes & Standards

 
Installing Outlet Boxes with Lighting Fixtures
by Staff |

Call me old-fashioned, but I have long held the opinion that, in a dwelling unit, an outlet box must be installed wherever a lighting fixture is to be installed.

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Article 370 - Pull and Junction Boxes
by Staff |

370-28(a)(2) Angle Pulls

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Electrical Installation Requirements, Conductors for General Wiring, Flexible Cords and Cables, Appliances, and Fire Pumps
by Staff |

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 230—Services Article 310—Conductors for General Wiring Article 400—Flexible Cords and Cables Article 422—Appliances Article 695—Fire Pumps

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Temperature Limitations of Connections Must Not Be Exceeded
by Staff |

The temperature rating associated with the ampacity of a conductor must be selected and coordinated so that the lowest temperature rating of any conductor, equipment termination, or electrical device is not exceeded.

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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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