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.
 Panelboards in cabinets?


Electrical overcurrent protective system Coordination can be complex and daunting. It is best approached with knowledge of the basics and proper system design.

Without very specific National Electrical code (NEC) rules for determining the right size conductor and the correct size overcurrent protective device, a conductor could overheat and even start a fire.

This article is part 4 in a series that reviews some of the more significant revisions and new requirements in the next National Electrical Code (NEC).

More on Codes & Standards

 
Moving Forward

The DC Task Group of the NEC Correlating Committee is proposing three new articles for the 2017 edition of the National Electrical Code (NEC). The first is Article 706, covering energy-storage systems (ESS). The second is Article 710, covering microgrids.


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When The NEC Causes Confusion

The National Electrical Code (NEC) requires all boxes and enclosures—including transfer switches, generators and power panels that are part of an emergency system—to be marked so they are readily identifiable as a component of the emergency system.


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Point of supply

Protecting Conductors, Safer Switchgear 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.
 Point of supply



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Avoid Costly Mistakes

The model building code treats campus dormitories as residential occupancies. However, a dorm does not function the same as a commercial apartment building. In some cases, the architect has created a physical design to accommodate as many students as possible.


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Multiwire Branch Circuits

Are multiwire branch circuits becoming antiquated for most new installations, or are they still being used in most circuit applications?


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General Installation Requirements, Part II

The National Electrical Code (NEC) is divided into an introduction and nine chapters with 10 informational annexes. As specified in 90.5(D), the informative annexes are not part of the NEC’s enforceable requirements but are included for informational purposes only.


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Receptacles at Patient Beds

Advances in medical technology have resulted in more medical appliances and equipment being used in general-care and critical-care patient bed locations. The governing body of the healthcare facility typically determines the level of care in a given area.


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