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. 

In the electrical industry, a new method of protecting workers from arc energy is gaining popularity: prevention through design. Simply speaking, the design and installation of equipment or systems incorporates inherent safety features that protect workers from serious arc-flash injuries or death.

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.
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National Electrical Code (NEC) Article 110, “Requirements for Electrical Installations,” applies generally to all electrical installations, like all of the articles located in the first four chapters.

Safety for solar photovoltaic (PV) systems has come a long way since the first installation requirements were inserted as Article 690 into the 1984 National Electrical Code (NEC).

More on Codes & Standards

 
Grounding Separately Derived Systems

Last month, we reviewed the basic requirements for grounding separately derived systems in accordance with Article 250 of the National Electrical Code (NEC). This month, we will explore a proposed 2002 Code change and how it might impact safety. 2002 NEC proposal

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Outlet Accessibility, Grommet Specs Changed in 1999 Code

Herewith are a few 1999 National Electrical Code (NEC) changes you may have overlooked. In Sec. 210-52(b)(1) Exception No.

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Installing Transformers in Special Situations

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

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

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

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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