Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
620

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
Small Wind Electric Systems 
When used for specific loads, small wind electric systems (SWESs) are often the sole power source.
Code Q&A: Minimum Cover Requirements 
Q. What are the minimum cover requirements for PVC and USE cable in commercial occupancies?
Code Q&A: Sizing EGC for Feeder Taps 

Q. What is the Code rule for sizing the equipment grounding conductor for feeder taps, and can you give me an example?

A. Equipment grounding conductors for feeder taps must be sized in accordance with Table 250.122, based on the ampere rating of the overcurrent device ahead of the feeder. In no case is it required to be larger than the feeder tap conductors [250.122(G)].

Stumped by the Code? Identifying a Class I Hazardous (Classified) Location 
Q. What is a Class I hazardous (classified) location?
The NEC and CATV/Radio Distribution Systems 
While Art. 810 provides the requirements for transmission or reception via an antenna, Art. 820 provides the requirements for the distribution of television and radio signals within a facility or on a property via cable.
Code Q&A: Splices in Conduit Bodies 
Q. When can I make a splice in a conduit body?
Code Q&A: Conductor Size for Class 1 Circuits 
Q. What is the smallest conductor allowed by the NEC for Class 1 control and signal circuits?
Radio and Television Equipment — Article 810 
Article 810 contains the installation requirements for the wiring of television and radio receiving equipment.
Code Q&A: NM Cable Rules  2
Q. Can I pull Type NM cable in a PVC sleeve located in a ground floor slab for the kitchen counter island?
Code Q&A: Ground Rod Electrodes  1
Q. What are the requirements related to the use of a ground rod for the grounding electrode system, including sizing of the grounding electrode conductor? (Answer based on 2011 NEC.)
NEC Facts about Fire Alarm Systems 
Article 760 covers the installation of wiring and equipment for fire alarm systems, including circuits controlled and powered by the fire alarm system.
2014 National Electrical Code Changes  20
The 2014 NEC was published last month by the NFPA and is now available for all to read. Check out the key changes to this edition of the Code.
Code Q&A: Understanding Objectionable Current  1
Q. The Code prohibits "objectionable currents;" what is this, what are some examples, and how can it be prevented?
Code Q&A: Grounding and Bonding for Remote Building 3
Q. If I have a feeder to a remote building and I run the conductors in PVC, what are the grounding and bonding requirements for this particular installation?
Stumped by the Code? Requirements for Identifying the High-Leg of a 3-Phase, 4-Wire Connected System 1
Q. What kind of marking does the Code require to identify the high-leg of a 3-phase, 4-wire delta connected system?
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