Code Q&A: Requirement for Additional Services

Test your knowledge of the NEC with this challenging question.

Feb. 27, 2025

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Courtesy of www.MikeHolt.com. Based on the 2023 NEC.

Question: Additional services are permitted for different voltages, frequencies, or phases, or for different uses, such as for _____.

a) gymnasiums

b) different rate schedules

c) flea markets

d) special entertainment events

See answer below.

Answer: b) different rate schedules

Per Sec. 230.2(D): "Additional services shall be permitted for different voltages, frequencies, or phases, or for different uses, such as for different rate schedules."

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About the Author

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.