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.

Overcurrent Protective Device Sizing  3
Undersize your overcurrent protective device (OCPD), and normal operations might become impossible. Oversize your OCPD, and the whole place might burn down.
Stumped by the Code? NEC Requirements for GFCI Protection of Swimming Pool Pump Motors 
Q. What is the NEC requirement for GFCI protection of swimming pool pump motors?
Access to Service Disconnects
Part VI of Article 230 focuses on the disconnecting means of service equipment.
Wire Support Requirements in Fire-Rated Spaces
Article 300 covers the general requirements for wiring methods and materials for all wiring installations.
Marking of Equipment in Hazardous Locations
Article 500 focuses on electrical equipment installed in hazardous (classified) locations.
FMC Coupling and Connector Requirements
Article 348 covers the use, installation, and construction specifications for flexible metal conduit (FMC) and its associated fittings.
Enclosures Installed in Damp and Wet Locations
Article 312 covers the installation and construction specifications of cabinets, cutout boxes and meter socket enclosures.
Code Q&A: Adjusting Ampacity of NM Cable  4
Q. When walls are insulated by filling them with spray-applied polyurethane foam insulation — or other types of insulation — must the ampacity of Type NM cable in that wall be adjusted?
Bonding & Grounding Communications Circuits
Article 800 covers communications circuits and equipment.
Installing Junction Box Near Wall of Permanently Installed Pool
Location of junction box near permanently installed pool
Appliance Branch-Circuit Overcurrent Protection
Article 422 covers electrical appliances used in any occupancy.
Exposed Open Wiring on Insulator Systems
Article 398 covers the use, installation, and construction specifications of open wiring on insulators.
Lighting Outlet Requirements in Attics and Underfloor Spaces
Article 210 of the 2014 NEC covers the requirements for branch circuits. Receptacle outlets shall be installed as specified in Sections 210.52 through 210.64.
Marking Requirements for Circuit Breakers Used as Switches
Parts I through VII of Art. 240 provide the general requirements for overcurrent protection and overcurrent protective devices not more than 1,000V, nominal.
Approved Wiring Methods in Ducts
Article 300 covers the general requirements for wiring methods for all wiring methods, unless modified by other Articles in the Code.
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