Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
834

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.

Articles
What's Classified as an Electric Vehicle?
The provisions of Art. 625 cover the electrical conductors and equipment external to an electric vehicle that connect an electric vehicle to a supply of electricity by conductive or inductive means, and the installation of equipment and devices related to electric vehicle charging.
Voltage Drop Limitations on Branch Circuits
Branch-circuit rating rules are covered in Part II of Article 210.
Protection of Open Conductors and Cables
Part IV of Article 230 focuses on service-entrance conductors.
Guarding of Moving Parts
Parts I through VII of Art. 240 provide the general requirements for overcurrent protection and overcurrent protective devices rated less than 1,000V.
Common GEC Requirements with Multiple Separately-Derived Systems
Article 250 covers the general requirements for grounding and bonding.
Methods of Bonding at the Service
Article 250 covers the general requirements for grounding and bonding.
Conductor or Cable Limitations in Surface Metal Raceways
Article 386 covers the use, installation, and construction specifications for surface metal raceways and associated fittings.
General Requirements for Sensitive Electronic Equipment
The provisions of Art. 647 cover the installation and wiring of separately derived systems operating at 120V line-to-line and 60V to ground for sensitive electronic equipment.
Motors & Generators Installed in Class I, Division 1 Locations
Article 501 covers the requirements for electrical equipment and wiring installed in Class I, Division 1 and 2 locations.
Ampacity of Generator Conductors
Article 445 contains installation and other requirements for generators.
Code Q&A: 25-Ft Tap Rule  2
Q. Please explain the 25-ft tap rules in the NEC?
Isolated Ground Receptacle Requirements
Article 250 covers the bonding and grounding requirements outlined by the NEC.
Cablebus Conductor Sizing
Article 370 covers the use and installation requirements of cablebus and associated fittings.
The Basics of Conductor Sizing — Part 1  1
Unfortunately, making the proper choices when sizing electrical conductors can get complicated.
Stumped by the Code? NEC Requirements for Sizing Conductors for an Electric Water Heater 
Q. How do we size the conductors and maximum overcurrent protection for an electric water heater? Please give an example.
Electrical Testing Feed
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