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. Are lighting outlets in dwelling units allowed on the same circuit as receptacle outlets?
Code Q&A
Q. What are the acceptable wiring methods for photovoltaic (PV) circuits inside buildings/structures?
Stumped by the Code? October 2011
Your most pressing National Electrical Code (NEC) questions answered
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 23
Your most pressing National Electrical Code (NEC) questions answered
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