Directory

U.S. code adoption, by jurisdiction

Every U.S. state plus notable local authorities having jurisdiction (AHJs), with appliance-listing (UL 858), NEC, fire-code, and energy-storage (UL 9540 / NFPA 855) code adoption. Pick a jurisdiction:

Code adoption summary

Sources

Data is illustrative. Verify any compliance decision against the cited primary sources and the NFPA NEC enforcement maps before relying on it.