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.
 Tape over device terminal screws?


Storage batteries are used for many different types of electrical equipment throughout the National Electrical Code (NEC). The phrase “storage batteries” occurs in 13 locations in the NEC index. In addition, Article 480 is devoted to the installation requirements for storage batteries.


All of the first eight chapters in the National Electrical Code (NEC) contain at least five articles except one. Chapter 1, General, contains only two articles. The first, Article 100, contains definitions essential to the proper application of the NEC.

When incorporating larger feeders or branch circuits into equipment, many commercial and industrial electrical designs require use of parallel arrangements.

More on Codes & Standards

 
2008 National Electrical Code Approved

The 2008 National Electrical Code (NEC) was approved in June at the annual meeting of the National Fire Protection Association (NFPA) in Boston.


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Class 2 and 3 Circuits

Class 2 and 3 circuits are defined as the portion of the wiring system between the power source and the connected equipment.


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Panelboard Orientation

Inspectors, manufacturers, contractors and electricians have debated the installation orientation of panelboards and circuit breakers for many years. Should a panelboard be installed only in a vertical position, or can it be installed horizontally?


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Branch-Circuit, Feeder and Service Calculations, Part XVI

Article 220—Load Calculations: 220.14 Motors


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Become a Problem Solver

Those of you tasked with selling fire detection and security systems for your company (and we are all in sales in one form or another) look for ways to set your company apart from the competition; most companies try to promote their strengths and benefits to an owner.


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Branch-Circuit, Feeder and Service Calculations, Part XV

Article 220—Load Calculations; 220.44 Receptacle Load—Other Than Dwelling Units  


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