How often does the National Electrical Code (NEC) change?
Tuesday, January 7, 2020
The first NEC was published in 1897 and a new edition, updated with changes, is published every three years. As of this writing, the current one is 2020, but the changes at each revision are not immediately adopted all around the country. It is not unusual for some states to still be using an NEC from three editions ago. To learn more, see our blog post Is the latest edition of the National Electrical Code (NEC) the standard used for the electrical system of new homes?
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