The short answer
Wisconsin enforces NEC 2023, the current edition there, statewide, in effect since September 1, 2026. The state record lists one amendment to know: 210.8.
- Current edition
- NEC 2023 (current)
- Adoption
- Statewide
- In effect since
- September 1, 2026
- Primary source
- docs.legis.wisconsin.gov
Code adoption cycles change. Always confirm the edition and amendments in force with your Authority Having Jurisdiction (AHJ) before permitting work.
How does Wisconsin adopt the NEC?
Wisconsin adopts the NEC statewide through SPS 316; the move from NEC 2017 to NEC 2023 took effect 2026-09-01. DSPS did not adopt the full dwelling GFCI expansion of 210.8 or the 50 A outlet requirement.
What are Wisconsin's amendments to the NEC?
210.8: The 2023 dwelling GFCI expansion is not adopted in full; check SPS 316 for the enforced text.
Who issues electrical permits in Wisconsin?
DSPS or a delegated local jurisdiction (many larger cities) issues permits and inspects.
Who licenses electricians in Wisconsin?
Statewide licensing of master and journeyman electricians through DSPS. Licensing board: Wisconsin Department of Safety and Professional Services (DSPS).
Wisconsin Department of Safety and Professional Services (DSPS)
Is Wisconsin moving to a newer NEC edition?
SPS 316 moved from NEC 2017 to NEC 2023 on 2026-09-01; Wisconsin did not adopt the full dwelling GFCI expansion or the 50 A outlet requirement.
Is Wisconsin on NEC 2026?
No. NEC 2026 is the newest edition; the one current in Wisconsin is NEC 2023, one edition older. NFPA publishes a new edition every three years and each state adopts on its own schedule.