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Mike Holt

Mike Holt is the owner of Mike Holt Enterprises (www.MikeHolt.com), 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.

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Code Quiz of the Week: No. 480

March 3, 2025
Weekly Quiz on the 2023 National Electrical Code
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Code Q&A: Requirement for Additional Services

Feb. 27, 2025
Test your knowledge of the NEC with this challenging question.
code requirements for branch circuits

NEC Requirements for Branch Circuits

Feb. 24, 2025
Branch circuits account for most circuits run in any electrical installation, so it pays to be familiar with the requirements.