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Mike Holt

Mike Holt

Mike Holt is the owner of Mike Holt Enterprises (, one of the largest electrical publishers in the United States. He earned a master's 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. 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 produce seminars, videos, books, and online training for the trade as well as contribute monthly Code content to EC&M magazine.

Fig. 1. PVC conduit is permitted to be installed within concealed locations such as walls, floors, or ceilings.

Stumped by the Code? NEC Requirements for Installing PVC

Nov. 9, 2023
Answering your NEC questions
Photo 31761878 © Karenr |
q and a on keyboard
Photo 599959 © Gilles Decruyenaere |
outdoor luminaire

Code Quiz of the Week: No. 411

Nov. 6, 2023
Weekly Quiz on the 2020 National Electrical Code