CFR › Title 46 › Part 111 › §111.91-146 CFR §111.91-1Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkEach electric power, control, and interlock circuit of an elevator or dumbwaiter must meet ASME A17.1 (incorporated by reference; see 46 CFR 110.10-1).