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. 

Ground-fault protection of equipment (GFPE) provides protection from devastating arcing events and destructive arcing burn-downs. National Electrical Code (NEC) sections 215.10, 230.95, 240.13 and 517.17 provide GFPE requirements, and Article 100 defines it.


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. Send questions to codefaqs@gmail.com. Answers are based on the 2017 NEC.
 NFPA 99 and Article 700


Terminology is the vocabulary of technical terms and usages appropriate to a particular trade, science or art. Does it matter what we call something in the National Electrical Code (NEC)?

Article 110 in the National Electrical Code (NEC), covers general requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment; enclosures intended for personnel entry; and tunnel installations. It contains five parts.


More on Codes & Standards

 
Neutral Conductors as Grounds, Wire Ties with Branch Circuits and More

Article 210 Branch Circuits; Article 250 Grounding and Bonding; Article 300 Wiring Methods; Article 330 Metal Clad Cable: Type MC; Article 404 Switches; Article 422 Appliances; Article 450 Transformers and Transformer Vaults Including Secondary Ties; Article 590 Temporary Installations; Article 690


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Installation of Electric Motors and Controllers

This is the third article of the series reviewing the most popular questions that have appeared in NECA’s online Code Question of the Day and have generated the most comments from subscribers. All answers have been updated to comply with the 2008 National Electrical Code (NEC).


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Do Not Expose

Many installations have exposed raceways and electrical equipment of all kinds on rooftops, walls and other direct sunlight applications, since this has been a common installation method for many years.


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Round Up or Round Down

When instructing workshops for electricians, I have found that some of the participants get very confused about how the National Electrical Code (NEC) addresses the rounding up or rounding down of the size of an overcurrent protection device (OCPD) to allow a motor to start and accelerate its drive


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The Sounds of Crisis

For many years, the audibility and intelligibility of fire alarm signals were ignored. Traditionally, a contractor or designer would put one audible/visible appliance above each manual fire alarm box (pull station) and maybe one or two more in the hallway.


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No Way Out

I have found while teaching the 2008 National Electrical Code (NEC) that the electrical industry has mixed feelings concerning the changes that pertain to the installation of receptacles.


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