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 mjohnston@necanet.org.

Articles by Michael Johnston

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.
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.
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
October 2015
Article 504 of the National Electrical Code (NEC) covers installation requirements for intrinsically safe (IS) systems. Where the circuits installed are IS in accordance with the applicable control drawings, it is acceptable to use any wiring method suitable in unclassified locations, including the cable wiring methods covered in chapters 7 and 8. READ MORE
September 2015
Special rules for ground-fault protection of equipment (GFPE) apply to healthcare facilities. Section 517.17(A) indicates that these GFPE rules apply to hospitals and other buildings (including multiple occupancy buildings) with critical-care space or where life-support equipment is used. READ MORE
August 2015
For many years, The National Electrical Code (NEC) has provided rules for equipment disconnects. NEC requirements are very specific for motors and motor-driven machinery, but they differ from lockout/tagout rules in NFPA 70E, Standard for Electrical Safety in the Workplace. The reason is simple. The NEC is an installation code, and its requirements apply to installed equipment. READ MORE
July 2015
In the electrical industry, a new method of protecting workers from arc energy is gaining popularity: prevention through design. Simply speaking, the design and installation of equipment or systems incorporates inherent safety features that protect workers from serious arc-flash injuries or death. READ MORE
June 2015
The development process of the 2017 National Electrical Code (NEC) has begun. In January, 19 Code-making panels (CMPs) held their “first draft” meetings to address roughly 4,000 public inputs (PIs). The NEC is primarily a reactive code that evolves through demonstrated need. In this cycle, a new trend puts the NEC in a more progressive role than in the past, and for good reason. READ MORE
May 2015
Service equipment must have an interrupting rating or short-circuit current (SCC) rating equal to or greater than the amount of available fault current supplied. Any equipment with ratings less than the maximum available fault current supplied by the system is in violation of the National Electrical Code (NEC). READ MORE