Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
836

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
Is This a Bonding Jumper?
Article 250 covers the general requirements for bonding and grounding electrical installations.
Vertical Support Requirements for Nonmetallic Wireways
Article 378 covers the use, installation, and construction specifications for nonmetallic wireways and associated fittings.
Portable Conductor Requirements for Stage Equipment
Part V of Article 520 of the NEC focuses on portable stage equipment other than switchboards.
LFMC Wiring Methods
Article 502 covers the requirements for electrical and electronic equipment and wiring for all voltages in Class II, Division 1 and 2 locations where fire or explosion hazards may exist due to combustible dust.
Working Space Height Requirements
Section 110.26 outlines the access and working spaces that shall be maintained about all equipment.
Required Outlets at Countertop Spaces
Article 210 covers branch circuits, except for branch circuits that supply only motor loads.
Cable Types Suitable for Use in Ducts and Plenums
Article 725 covers remote-control, signaling, and power-limited circuits that are not an integral part of a device or appliance.
Box Sizing Tips  2
So you go through all that work to correctly size your raceway, only to find out during the acceptance inspection that you have to replace some boxes and re-pull all of the conductors.
Stumped by the Code? NEC Requirements for Entrance and Egress 
Q. What are the NEC requirements for entrance and egress from electrical equipment working spaces?
Listed Cable Suitable for Use Under Raised Floors of ITE Rooms
Section 645.5(E) focuses on supply circuits and interconnecting cables placed under raised floors in an information technology equipment room.
Equipment Secured to Grounded Metal Supports
Part VII of Art. 250 focuses on the methods of equipment grounding.
Code Q&A: Swimming Pool Pump Motor Connections 
Q. Are cord and plug connections allowed for swimming pool pump motors?
Weight Requirement for Handhole Enclosure Cover
Article 314 covers the installation and use of all boxes and conduit bodies used as outlet, device, junction, or pull boxes — depending on their use — and handhole enclosures.
Size Limitation for Type NUCC
Article 354 covers the use, installation, and construction specifications for nonmetallic underground conduit with conductors (NUCC).
Cable Tray System Uses Not Permitted
Article 392 covers cable tray systems, including ladder, ventilated trough, ventilated channel, solid bottom, and other similar structures.
Electrical Testing Feed
Calpipe Contest

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