Mike Holt

NEC Trainer / Consultant,
Mike Holt Enterprises

Mike earned a masters degree in the Business Administration Program (MBA) from the University of Miami. He earned his reputation as a National Electrical Code (NEC) expert by working his way up through the electrical trade. Formally a construction editor for two different trade publications, Mike started his career as an apprentice electrician and eventually became a master electrician, an electrical inspector, a contractor, and an educator. Since 1975, he has provided custom in-house seminars for groups such as IAEI, NECA, ICBO, IBM, AT&T, Motorola, and the U.S. Navy. Mike has taught more than 1,000 classes on 30 different electrical-related subjects — ranging from alarm installations to exam preparation and voltage drop calculations. He continues to develop seminars, videos, books, and software as well as contributing monthly Code content to EC&M magazine.

Code Q&A
Q. When a metal water pipe is used as a grounding electrode, is the concrete encased electrode satisfactory as the supplemental electrode, or is a ground rod still required?
Code Q&A
Q. Does the NEC require that replacement receptacles be updated to provide GFCI protection?
Code Q&A
Q. Are outlet boxes allowed to be supported by the ceiling framing members of a suspended ceiling system or must independent support wires be added?
Stumped by the Code? September 2011
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A
Q. How do I size the conductors for an arc welder?
Grounding and Bonding — Part 3 of 3

The use of structural metal as a grounding electrode is an issue that has been revised during several recent Code cycles. The 2011 NEC has once again revisited the rule explaining when a structural metal building frame can serve as a grounding electrode.

Stumped by the Code? August 2011
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A 1
Q. What are the disconnecting requirements for a transformer?
Code Q&A
Q. Is it acceptable to install communication cable in the same lighting pole that is being used as a raceway for lighting conductors?
Stumped by the Code? July 2011 3
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A
Q. I'm confused. Can you please explain the 25-ft feeder tap rule and provide an example?
Stumped by the Code? June 2011 26
Your most pressing National Electrical Code (NEC) questions answered
Code Q&A
Q. What are the grounding requirements for a portable generator?
Code Q&A
Q. What wiring methods are allowed in ducts and other spaces used for environmental air handling?
Stumped by the Code? May 2011
Your most pressing National Electrical Code (NEC) questions answered
Electrical Testing Feed

EC&M Webinars
Sep 10, 2015

ON DEMAND: An Effective Electrical Safety Program that Delivers

This hour-long webinar will cover the wording in various IEEE recommended practices, NFPA 70E and ANSI Z10 with an emphasis on what it means in terms of designing, implementing and managing an Effective Electrical Safety Program....More
Jul 21, 2015

ON DEMAND: Mitigation Methods for Arc Flash Hazards - Enhancing Personal Safety

The energy released during an arc flash event can result in severe damage to personnel, equipment, and property. While there are solutions which seek to improve the protection for each, this program will focus on personnel....More
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