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. 

This is the final part in a series that reviews some of the more significant revisions and new requirements included in the 2017 National Electrical Code (NEC). This article looks at more rule changes for special equipment covered in NEC chapters 7 and 8.

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.

More on Codes & Standards

 
Branch-Circuit, Feeder and Service Calculations, Part VI

220.14 Other Loads—All Occupancies Load calculation requirements are in Article 220 of the National Electrical Code (NEC). This article provides requirements for calculating branch-circuit, feeder and service loads. Article 220 is divided into five parts.


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Branch-Circuit, Feeder and Service Calculations, Part V

220.14 Other Loads—All Occupancies Article 220 of the National Electrical Code (NEC) provides requirements for calculating branch-circuit, feeder and service loads. An essential part of an electrician’s professional career is performing load calculations.


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Bathroom Installations, Circuit Breakers and More

Switch height for paddle fan Q: Is there a minimum and maximum height for a wall switch that controls a paddle fan in a bedroom of a multifamily dwelling? A: There are no special rules for the height of a wall switch that controls a ceiling fan.


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What's Protected?

Changes involving ground-fault circuit interrupter (GFCI) protection for personnel have been present in every National Electrical Code (NEC) cycle since GFCIs were inserted into the 1962 NEC.


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Loss of Power Can Be Devastating

With the 2005 hurricane season a distinct memory for all involved in those tremendously destructive storms, recovery and reconstruction is a painfully slow process.


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Overcurrent Protection, Disconnecting Means and Mo

Disconnecting means Q: Disconnecting means for circuits supplied by a generator are required where the circuits enter a building or structure. Are these disconnects from an outdoor generator required to meet the rules in Article 225? Is there a maximum number of disconnects permitted?


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