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.
 Receptacles and EGC connections


The 2017 National Electrical Code (NEC) will feature the new Article 691, which covers nonutility company, large-scale photovoltaic (PV) electric supply stations with generating capacities of at least 5,000 kilowatts (kW).

One way to help safeguard people from hazards arising from electricity use is to ensure there is sufficient working space in front of and around electrical equipment.

This article is part 2 in a series that examines some of the more significant revisions and new requirements in the 2017 National Electrical Code (NEC). This piece reviews some significant changes in Articles 100 and 110.
 Article 100­—Definitions


More on Codes & Standards

 
Fault Lines

The 2011 National Electrical Code (NEC) introduced changes that required ground-fault circuit interrupter (GFCI) protection to be readily accessible, and the 2014 NEC presents further changes regarding ready access of these devices. Were these changes necessary?


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Sizing Conductors, Part XXXVI

Rules for transformer secondary conductors are in Section 240.21 of the National Electrical Code (NEC). Many electricians and electrical engineers are familiar with 240.21 because it contains tap rules.


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The NEC requires an effective ground-fault current path for medium- and high-voltage services.
Gone To Ground

Part X of Article 250 in the National Electrical Code (NEC) provides the grounding requirements for systems and circuits of greater than 1,000 volts (V).


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As Seen On Canadian TV

During a recent training program on the National Electrical Code (NEC), a question arose about panelboards and whether they could be installed in a horizontal orientation rather than vertically. This has come up often, probably due to various home-improvement broadcasts that are produced in Canada.


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NECA Offers OSHA Friendly Advice

In February’s column, I discussed why the Electrical Transmission & Distribution (ET&D) Partnership is an example of an Occupational Safety and Health Administration (OSHA) cooperative program that has worked out extremely well.


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Removing Old Cable, Bonding Hot Tubs 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.
 Abandoned cable in ceiling



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