Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
689

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
Overcurrent Protection for Pipe Organs
The installation requirements for pipe organs are outlined in Art. 650 of the 2014 NEC.
Code Q&A: Properly Serving Fixed Electric Space-Heating Equipment 
Q. How are the branch circuit conductors and overcurrent protection sized for fixed electric space-heating equipment? Please provide an example.
NPLFA Circuit Power Source Requirements
Article 760 covers the installation of wiring and equipment of fire alarm systems including all circuits controlled and powered by the fire alarm system.
Conductor Clearance From Building
Section 225.19 outlines the clearance requirements from buildings for conductors 600V and less, nominal.
Step-by-Step Guide to Transformer Installations 
All you wanted to do was install a 30kVA, 120/208V transformer to supply receptacles in a new office structure on the production floor.
Stumped by the Code? Location of the Service Disconnecting Means 
Q. What are the requirements for the location of the service disconnecting means?
Equipment Secured to Grounded Metal Supports
Part VII of Article 250 focuses on the methods of equipment grounding.
Open Wiring Exposed to Physical Damage
Article 398 covers the use, installation, and construction specifications of open wiring on insulators.
IT Cables Under Raised Floors
Article 645 covers equipment, power-supply wiring, equipment interconnecting wiring, and grounding of IT equipment and systems in an IT equipment room.
Receptacles in Wet Locations
Article 406 covers the rating, type, and installation of receptacles, cord connectors, and attachment plugs (cord caps).
Class 3 Circuit Protection
Article 725 covers remote-control, signaling, and power-limited circuits that are not an integral part of a device or appliance.
Pool Circulation and Sanitation Systems 1
The requirements for permanently installed pools are outlined in Part II of Art. 680.
General Requirements in Hazardous (Classified) Locations
General requirements for electrical and electronic equipment installed in hazardous (classified) locations can be found in Sec. 500.4 of Art. 500.
Approved Uses of Neutral Conductors
Article 200 focuses on the use and identification of grounded conductors.
Is a SPD the Same as a TVSS? 2
Article 285 covers general requirements and installation & connection requirements for SPDs permanently installed on premises wiring systems 1kV or less.
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