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. 

As the 2017 NEC development cycle came to a close, we embarked on a ten-part series of articles and a two-part webinar detailing the most significant changes in the 2017 NEC. With the series concluded, this article collects each entry and both webinars into a single location.

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 2017 NEC.
 NFPA 70E and the NEC


Having adequate working space around electrical equipment is essential. Article 110 in the National Electrical Code (NEC) contains requirements for this access. Part II in Article 110 pertains to systems rated 1,000 volts (V), nominal, or less.

Anyone who has attended a conference in a hotel or other meeting space knows there can be a lack of receptacles to provide power for portable equipment. Sometimes, extension cords or relocatable power taps are plugged into wall receptacles and daisy-chained together to provide power to tables.

More on Codes & Standards

 
Type NM Cable and More

Here's the fourth part of a 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 are updated to comply with the 2008 National Electrical Code (NEC).


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Healthy Separation

Emergency circuits are installed in patient bed locations in general care and critical care areas in hospitals to ensure power is available to electrical equipment even where normal power is lost for some reason.


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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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