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.
 Battery locations


One of the changes in the 2014 edition of the National Electrical Code (NEC) was a new section in Article 110 pertaining to lockable disconnecting means. This is significant because a number of sections throughout the Code contain requirements for disconnecting means.

my april 2015 column, “moving forward,” provided an introduction to a number of public inputs for the 2017 National Electrical Code (NEC). These inputs were submitted to Code-making panel (CMP) 3, and they addressed power over Ethernet (PoE) cables.

Does the National Electrical Code (NEC) require a 480-volt (V), three-phase, 3-wire, delta-connected system to be grounded? No, it is optional. This article examines the NEC’s electrical-system grounding provision.

More on Codes & Standards

 
Taping Devices, Installing Grounding Electrodes 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.
 Tape over device terminal screws?



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Not Your Average DC

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.



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Conductors On Rooftops, Power Button Markings 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.
 Conductors installed on rooftops 



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A Tricky Subject

The National Electrical Code (NEC) mentions cathodic protection only once; however, dealing with cathodic action and protection can be difficult to diagnose and time-consuming to fix.


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General Installation Requirements, Part XI

The National Electrical Code (NEC) is an installation code. As stated in the scope of Article 90, the NEC covers the installation of electrical conductors, equipment and raceways; signaling and communications conductors, equipment and raceways; and optical fiber cables and raceways [90.2(A)].


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Risk And Reward

National Electrical Code-enforcing jurisdictions are continuously active with their adoption processes.


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Panelboards, Terminations And Design By Code

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.
 Grounded conductor 
terminations, panelboards



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