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 2017 NEC.
 Parallel equipment 
grounding conductors


The last section in Part II of Article 110 in the National Electrical Code (NEC) covers enclosure types. The section for enclosure types has not always been 110.28. Enclosure types has only been 110.28 since the 2011 edition of the NEC.

In the past two National Electrical Code (NEC) cycles, there have been substantial changes in Article 517 dealing with healthcare facilities.

An equipment grounding conductor (EGC) installed with a branch circuit or feeder circuit performs three important functions in the electrical safety system. EGCs provide a path that connects equipment to ground, thereby performing grounding functions.

More on Codes & Standards

 
Significant Changes for the NEC 2008

There were 3,688 proposals for changes to the National Electrical Code (NEC) and 2,349 comments processed by the National Fire Protection Association (NFPA) staff at NFPA headquarters in Quincy, Mass. The following is part five in a series of significant changes for the 2008 NEC.


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AFCI Basics

Arc-Fault Circuit Interrupter (AFCI) protection has been a requirement since the 1999 National Electrical Code (NEC), starting as protection for receptacles in bedrooms and then progressing to protection of all outlets in bedrooms with changes in later Code cycles.


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Text Addresses Significant Changes in the NEC 2008

American Technical Publishers Inc released “Significant Changes Based on the 2008 National Electrical Code.” This new textbook is intended to familiarize learners with the major changes contained in the 2008 National Electrical Code (NEC) and includes only the most significant revisions.


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As Safe as You Want to Be

The National Fire Alarm Code does not require anyone to install a fire alarm system. That statement sometimes surprises contractors who have been told by a fire official to install a fire alarm system in accordance with NFPA 72.


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Type SE Cable, AFCI Revisions and More

Article 110 Requirements for Electrical Installations; Article 210 Branch Circuits; Article 225 Outside Branch Circuits and Feeders; Article 250 Grounding and Bonding; Article 338 Service-Entrance Cable: Type SE and Types USE; Article 396 Messenger-Supported Wiring; Article 404 Switches; Article 408


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Branch-Circuit, Feeder and Service Calculations, Part XXVI

Article 220 of the National Electrical Code (NEC) contains requirements for calculating branch-circuit, feeder and service loads.


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Neutral or Not?

Everyone in the electrical industry, including the electrical apprentice, the journeyman, the master electrician, electrical contractor, electrical engineer, designer, the electrical inspector, et al., seem to use the phrase “neutral conductor.” However, until the 2008 National Electrical Code (NEC)


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