Mike Holt

Mike
Holt
NEC Trainer / Consultant,
Mike Holt Enterprises
940

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
Code Q&A: Sizing Bonding Jumper for Single Raceway 
What are the rules in sizing a supply side bonding jumper sized for a single raceway containing service conductors?
Minimum Clearance Requirement for Surface-Mounted Luminaire Installed in a Clothes Closet
Surface-mounted fluorescent luminaires in clothes closets shall be permitted on the wall above the door, or on the ceiling, provided there is a minimum clearance of _____ in. between the luminaire and the nearest point of a storage space.
Routing of SPD Conductors
The conductors used to connect the surge protective device to the line or bus and to ground shall not be any longer than _____ and shall avoid unnecessary bends.
How Many Supplies are Allowed?
A building or structure shall be supplied by a maximum of _____ feeder(s) or branch circuit(s), unless specifically permitted otherwise.
Minimum Conductor Size for Equipment Operating at Less than 50V
Conductors for an appliance circuit supplying more than one appliance or appliance receptacle in an installation operating at less than 50V shall not be smaller than _____ AWG copper or equivalent.
Motor Calculations — Part 1  4
When motors start across the line, they typically draw five times the running current.
Stumped by the Code? NEC Requirements for 10-Ft Tap Rules 
Q. Please explain the 10-ft tap rules?
Mounting Height Requirement for EV Coupler
Unless specifically listed and marked for the location, the _____ of electric vehicle supply equipment shall be stored or located at a height of not less than 24 in. above the grade level for outdoor locations.
Protecting Cellular Metal Floor Raceways
Inserts for cellular metal floor raceways shall be leveled to the floor grade and sealed against the entrance of _____.
Working Space Requirements for Electric Sign Equipment
A working space not less than 3 ft high by 3 ft wide by ______ deep is required for each ballast, transformer, electronic power supply, and Class 2 power source where not installed in a sign.
Location of Emergency Controls at Attended Self-Service Motor Fuel Dispensing Facilities
The emergency controls for attended self-service motor fuel dispensing facilities shall be located no more than _____ ft from motor fuel dispensers.
Motor Calculations — Part 2  9
Correctly sizing these different devices can be confusing.
A/C Equipment Disconnecting Means Requirements
Where the air conditioner disconnecting means is not within sight from the equipment, the disconnecting means must be ______.
Definition of Child Care Facility
A child care facility is a building or structure, or portion thereof, used for educational, supervision, or personal care services for more than _____ children seven years in age or less.
Code Q&A: Rules When Mixing Conductor Types in Same Raceway 
What are the rules related to the installation of conductors under 50V with conductors from 120V, 208V, 240V, 277V, and 480V systems in the same raceway or enclosure?
Electrical Testing Feed

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