US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 111 — ELECTRIC SYSTEMS—GENERAL REQUIREMENTSSubpart 111.105—Hazardous Locations111.105-1946 C.F.R. § 111.105-19Switches.Last amended: 2023Year: 2026Length: 30 wordsOfficial source Cite as 46 C.F.R. § 111.105-19 (2026)A switch that is explosionproof or flameproof, or that controls any explosionproof or flameproof equipment must have a pole for each ungrounded conductor. [USCG-2020-0075, 88 FR 16366, Mar. 16, 2023]Previous46 C.F.R. § 111.105-17Next46 C.F.R. § 111.105-21