Charles R. Miller

Code Contributor

Charles R. Miller, owner of Lighthouse Educational Services, teaches classes and seminars on the electrical industry. He is the author of “Illustrated Guide to the National Electrical Code” and NFPA’s “Electrical Reference.” He can be reached at 615.333.3336, charles@charlesRmiller.com or www.charlsRmiller.com

Articles by Charles R. Miller

July 2016
Understanding the third article of the National Electrical Code (NEC), Article 110, Requirements for Electrical Installations, is essential to having a Code-compliant installation of the electrical system. 
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June 2016
Article 110 in the National Electrical Code (NEC) contains general requirements for electrical installations. Some of the topics covered include examination and approval, installation and use, and access to and spaces about electrical conductors and equipment.
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May 2016
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. It is important to have a good understanding of these requirements.
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April 2016
The second article in the National Electrical Code (NEC), Article 100, contains definitions that are essential to the proper Code application. Article 110 contains many requirements that are essential to understanding and applying requirements located throughout the Code. Some of the subjects that Article 110 covers are mentioned numerous times throughout the NEC. READ MORE
March 2016
Article 110 in the National Electrical Code (NEC) contains requirements that cover a wide variety of topics. As the scope in 110.1 states, the article provides general requirements for the examination and approval, installation and use, access to and spaces about electrical conductors and equipment. READ MORE
February 2016
Most articles in the National Electrical Code (NEC) cover specific topics such as branch circuits, overcurrent protection, grounding and bonding, boxes, rigid metal conduit, motors, healthcare facilities, swimming pools and emergency systems. See the Table of Contents for all of the specific topics covered in the NEC. READ MORE
January 2016
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. READ MORE
December 2015
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)]. READ MORE
November 2015
Conductor identification requirements are located in articles throughout the National Electrical Code (NEC). The first such requirement is in Article 110, and it pertains to a specific type of electrical system. READ MORE

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