2025 Nec Handbook. Get current with the latest in electrical installation requirements with the reorganized and updated nfpa 70®, national electrical code® (nec®), 2023 edition. Based on the 2023 national electrical code (nec), the national electrical code handbook clarifies concepts for a better understanding of the code.
In order to make these comprehensive changes manageable and easier to digest, we’ve created this gallery, which summarizes the most important revisions to the 2023 nec. Nfpa 70, the national electrical code (nec), is a regionally adoptable standard for electrical best.