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.
 Communications cable and 300.4(E)


Understanding the third article of the National Electrical Code (NEC), Article 110, Requirements for Electrical Installations, is essential to having a Code-compliant installation of the electrical system. 


In March, I attended a Central Arizona Chapter International Association of Electrical Inspectors (IAEI) meeting. A discussion ensued about the growing number of improperly installed and uncertified light-emitting diode (LED) retrofit lighting kits.

The National Electrical Code (NEC) contains the minimum requirements for a safe installation. One must do at least that much when installing electrical equipment and systems. This means understanding how to size electrical conductors of circuits, including the equipment grounding conductors (EGCs).

More on Codes & Standards

 
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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Branch-Circuit, Feeder and Service Calculations, Part III

220.14 Other Loads—All Occupancies Article 220 of the National Electrical Code (NEC) contains requirements for calculating branch-circuit, feeder and service loads. Knowing how to perform load calculations is an essential part of being an electrician.


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