CFR›Title 46›Chapter I›46 CFR Part 120 Citation46 CFR Part 120ContainsSubparts Subpart A–Subpart ECorpusDaily eCFRDisplayed edition2026-10-01Last updated2026-10-01 PART 120—ELECTRICAL INSTALLATION Subparts Subpart A Subpart A—General Provisions Subpart B Subpart B—General Requirements Subpart C Subpart C—Power Sources and Distribution Systems Subpart D Subpart D—Lighting Systems Subpart E Subpart E—Miscellaneous Systems and Requirements Authority46 U.S.C. 2103, 3306; E.O. 12234, 45 FR 58801, 3 CFR, 1980 Comp., p. 277; Department of Homeland Security Delegation No. 0170.1.SourceCGD 85-080, 61 FR 928, Jan. 10, 1996, unless otherwise noted.