Michael Johnston

Executive Director of Standards, NECA

Michael Johnston is NECA’s executive director of standards and safety. He is chair of the NEC Technical Correlating Committee. He served as a principal representative on NEC CMP-5 representing IAEI for the 2002, 2005, and 2008 cycles and is currently the chair of CMP-5, representing NECA for the 2011, 2014 and 2017 NEC cycles. Mike is a member of the IBEW and has experience as an electrical journeyman wireman, foreman and project superintendant. Mike worked for the International Association of Electrical Inspectors (IAEI) as the director of education, codes and standards for almost 10 years. He also worked as an electrical inspector and electrical inspection field supervisor for the city of Phoenix, Ariz. Johnston is an active member of IAEI, the NFPA Electrical Section, Education Section, the UL Electrical Council, and National Safety Council. Reach him at mj@necanet.org.

Articles by Michael Johnston

July 2016
The National Electrical Code (NEC) contains the minimum requirements for a safe installation. One must do at least that much when installing electrical equipment and systems. This means understanding how to size electrical conductors of circuits, including the equipment grounding conductors (EGCs). READ MORE
June 2016
The decision to install and operate an ungrounded system is typically a combined effort that includes a design or engineering team, the owner, the operators and sometimes the authority having jurisdiction. READ MORE
May 2016
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. Generally, Code users should understand there are systems that are required to be grounded, systems that are not required to be grounded and systems that must not be grounded. READ MORE
April 2016
The National Electrical Installation Standards (NEIS) are the only American National Standards Institute-approved performance and workmanship industry standards for electrical construction. Construction owners, engineers, architects, contractors and others use these standards because they clearly illustrate performance and quality elements that apply in electrical construction. READ MORE
March 2016
In the construction industry, one of the important objectives of contractors and the construction team—aside from being paid for the job—is attaining National Electrical Code (NEC) compliance and final approval. In the electrical field, some key factors relate to achieving this ultimate goal. Let’s look at the parties involved and what it takes to attain approvals.
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  • Surge protection

February 2016
Adoption and use of the 2014 National Electrical Code (NEC) is underway in many areas of the country. Adoption processes and timelines can vary between states and jurisdictions. With the 2014 NEC, a few additional requirements apply to emergency systems. Article 700 of the Code contains the minimum requirements for emergency systems. Because these are the minimum, one must do at least that much. READ MORE
January 2016
When incorporating larger feeders or branch circuits into equipment, many commercial and industrial electrical designs require use of parallel arrangements. Installing conductors in parallel for feeders means multiple conductors are electrically connected at both ends to create a single conductive path or conductor for each of the circuit’s ungrounded or grounded-phase conductors.
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December 2015
National Electrical Code-enforcing jurisdictions are continuously active with their adoption processes. Entities that adopt and use the latest edition of the Code enjoy the benefits of a document that has been developed and maintained by qualified technical committees through an open consensus process.
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November 2015
Does the National Electrical Code (NEC) address conductor-withstand ratings for wire-type equipment grounding conductors (EGCs)? Yes, but it is worthy of a more detailed explanation. The Code is the minimum set of wiring requirements for safety, meaning one must do at least that much to be compliant. READ MORE

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