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. 

The 2017 National Electrical Code (NEC) will feature the new Article 691, which covers nonutility company, large-scale photovoltaic (PV) electric supply stations with generating capacities of at least 5,000 kilowatts (kW).

One way to help safeguard people from hazards arising from electricity use is to ensure there is sufficient working space in front of and around electrical equipment.

This article is part 2 in a series that examines some of the more significant revisions and new requirements in the 2017 National Electrical Code (NEC). This piece reviews some significant changes in Articles 100 and 110.
 Article 100­—Definitions


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.
 Receptacles and EGC connections


More on Codes & Standards

 
Listed Luminaires, Outside Feeder Taps And More

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.
 Listed luminaire?



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Sizing Conductors, Part XXXIII

The first seven parts of Article 240 in the National Electrical Code (NEC) provide the general requirements for overcurrent protection and overcurrent protective devices not more than 1,000 volts (V), nominal.


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AFCIs Now More Integral

This article returns to the topic of my December 2013 column, which dealt with some of the changes that occurred to 210.12 for arc-fault circuit interrupters (AFCI) in the 2014 National Electrical Code (NEC), such as the expansion of AFCI devices to include circuits for kitchens and laundry equipmen


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Vampires, Phantoms and Energy Hogs

At a recent National Electrical Code (NEC) update seminar, 
I was asked about the new requirements to install a grounded (neutral) conductor in a box for switches that control lighting loads.


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Sizing Conductors, Part XXXII

With a lot of work from many dedicated individuals, the 2014 edition of the National Electrical Code (NEC) became available at the end of August 2013. The Code is revised every three years, but the revision cycle has not always been three years. Revision cycles have ranged from one to four years. 



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Stay Dry

I made a comment while teaching a class that nonmetallic (NM) cable was not permitted in an outdoor, wet location. An attendee took exception to that statement and asked me to provide National Electrical Code (NEC) justification for the assertion.


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Equipment Or Building?

At some properties, a single electric utility service supplies multiple buildings or structures. The service could directly supply one of the buildings, and feeders or branch circuits supply other buildings from that service equipment.


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