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 NEC cycle. 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 mjohnston@necanet.org.

Articles by Michael Johnston

November 2013
This article is a continuation of a concise and complete review of some of the more significant changes that have been incorporated into the 2014 edition of the National Electrical Code (NEC). This segment takes a look at some significant revisions in chapters 4 through 6. READ MORE
November 2013
Many buildings and structures are supplied by power from a source other than a utility service. If the supply—such as a transformer or generator—is customer-owned, it is not a service and, therefore, is either a feeder or branch circuit. READ MORE
October 2013
Part I of this series reviewed some Code-wide revisions and some of the significant changes in Chapter 1 of the National Electrical Code (NEC). This segment takes a look at some significant revisions in chapters 2 and 3 (with the comment or proposal number cited after each listing). READ MORE
October 2013
Someone recently inquired about the proper wiring methods in a patient care location of a healthcare facility. A few factors relate to this determination. One of the first things is knowing the type of construction for the facility, since the wiring method must be suitable for use where it is installed. READ MORE
September 2013
It seems like just yesterday that the NFPA Standards Council issued the 2011 National Electrical Code (NEC). However, we’ve moved on to the next one; the 2014 edition was up for approval in August. Revising the NEC is a ton of work for the 19 technical committees during each three-year development cycle. The NEC is in a continuous revision process due to its inherent dynamics. READ MORE
September 2013
Occasionally, I provide training on electrical wiring in healthcare facilities, and frequently I am asked about the requirements for hospital-grade receptacles. One individual recently indicated that the medical building’s patient-care areas are being wired using hospital MC cable. READ MORE
August 2013
At a recent training presentation on wiring for healthcare facilities, there was a question about protection for the emergency system in a hospital. An attendee asked if the emergency lighting circuits installed for 2-by-4-foot lay-in luminaires located in a suspended ceiling grid could be wired using MC cable or if they needed to be wired using metal raceway, such as EMT. READ MORE
July 2013
A recent training program discussed the requirements for connecting surge protection at service equipment. With the variety of opinions on this issue, it seemed appropriate to provide some information about connecting surge protective devices (SPDs) in a manner compliant with the National Electrical Code (NEC). Prior to the 2011 NEC, SPDs were known as transient voltage surge suppressors (TVSSs). READ MORE
June 2013
Requirements for electrical wiring in hazardous (classified) locations are more restrictive than in the rules for wiring in general types of occupancies. National Electrical Code (NEC) Chapter 5 includes rules for special occupancies such as hazardous locations, healthcare facilities and assembly occupancies. Chapter 5 rules often modify or amend the general requirements in chapters 1 through 4. READ MORE

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