The NEC is revised, and a new Code is published every how many years?

• A. 1
• B. 2
• C. 3
• D. 5

Answer: (C)

The question checks how often the NEC is updated. The National Electrical Code follows a three-year revision cycle, with a new edition published every three years. This schedule lets the code stay current with new electrical technologies and practices while giving jurisdictions time to adopt the changes. For example, editions commonly arrive on intervals like 2017, 2020, 2023. So a three-year interval is the standard frequency. Updates each year or every two or five years don’t align with how the NEC is published.