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.
 Battery locations


One of the changes in the 2014 edition of the National Electrical Code (NEC) was a new section in Article 110 pertaining to lockable disconnecting means. This is significant because a number of sections throughout the Code contain requirements for disconnecting means.

my april 2015 column, “moving forward,” provided an introduction to a number of public inputs for the 2017 National Electrical Code (NEC). These inputs were submitted to Code-making panel (CMP) 3, and they addressed power over Ethernet (PoE) cables.

Does the National Electrical Code (NEC) require a 480-volt (V), three-phase, 3-wire, delta-connected system to be grounded? No, it is optional. This article examines the NEC’s electrical-system grounding provision.

More on Codes & Standards

 
Electrical Installation Requirements, Overcurrent Protection, Lighting Fixtures, and More

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 230—Services Article 240—Overcurrent Protection Article 310—Conductors for General Wiring Article 410—Lighting Fixtures, Lampholders, Lamps, and Receptacles Article 424—Fixed Electric Space-Heating Equipment


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What Does Article 300 Cover?

This article Is based on the newly issued 2002 National Electrical Code (NEC). The NEC style has been changed for the 2002 edition. It may take awhile for those who are familiar with previous issues of the Code to become accustomed to using it, but this new style should make it much easier to use.


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Electrical Installation Requirements, Overcurrent Protection, Grounding, and Transformers and Their Vaults

CODE CITATIONS Article 110—Requirements for Electrical Installations Article 240—Overcurrent Protection Article 250—Grounding Article 450—Transformers and Transformer Vaults Working space around electrical equipment


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Wiring in Ducts, Plenums, and Other Air-handling Spaces

Navigating the requirements in the National Electrical Code (NEC) for ducts, plenums, and other air-handling spaces can be difficult.


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Testing and Maintaining Life Safety Systems

Most electrical contracting firms are involved in installing life safety systems for new building construction and the renovation and expansion of existing buildings, but not in the ongoing system inspection, testing, maintenance, and upgrade.


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The Code In Focus--Article 210 - Branch Circuits

210-5 Identification for Branch Circuits


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