CFR › Title 46 › Part 111 › §111.40-146 CFR §111.40-1Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEach panelboard must meet Section 9.10.1 of IEEE 45.1-2017 (incorporated by reference; see § 110.10-1 of this subchapter).