Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
635

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
Motor Controller Requirements 
Part VII of Art. 430 is intended to require suitable controllers for all motors.
Overcurrent Device Ratings for Welders 
Article 630 covers apparatus for electric arc welding, resistance welding, plasma cutting, and other similar welding and cutting process equipment that is connected to an electrical supply system.
Illumination in Working Spaces 
Access and working space requirements about electrical equipment are outlined in Sec. 110.26 of the 2011 NEC.
Polarity of Connections 
Chapter 2 of the NEC focuses on wiring and protection methods.
Code Q&A: Calculating Feeder or Service Loads 
Q. How can you determine the feeder or service load for an existing installation? (Answer based on 2011 NEC.)
Protection of Underground Service Conductors  1
Do you know the specific requirements for underground service conductors?
Visibility Requirements for Manufacturer Markings on Electric Signs and Outline Lighting 
Article 600 covers the installation of conductors, equipment, and field wiring for electric signs and outline lighting.
Emergency Controls at Motor Fuel Dispensing Facilities 
Article 514 applies to motor fuel dispensing facilities, marine/motor fuel dispensing facilities, motor fuel dispensing facilities located inside buildings, and fleet vehicle motor fuel dispensing facilities.
Raceway Bonding Requirements 
Bonding requirements are outlined in Part V of Art. 250.
Type FCC Cable Assembly 
Article 324 covers a field installed wiring system for branch circuits incorporating Type FCC cable ans associated accessories.
Code Q&A: Grounding Requirements for Multiple Services  1
Q. When a building has more than one service (as allowed by Sec. 230.2), is there a requirement to ground these multiple services to a common grounding electrode?
Grounding and Bonding — Part 2 of 2  1
Should you install equipment grounding conductors (EGCs)? Yes and no.
Code Q&A: Air-Conditioner Calculations  2
Q. How do I size the conductor and overcurrent protection for an air-conditioner? (Answer based on 2011 NEC.)
Code Q&A: GFCIs in Unfinished Basements  5
Q. Is GFCI protection required for a sump pump installed in an unfinished basement of a dwelling unit?
Stumped by the Code? Motor Control Circuit Overcurrent Protection 
Q. What is the Code rule for motor control circuit overcurrent protection?

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