US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 111 — ELECTRIC SYSTEMS—GENERAL REQUIREMENTSSubpart 111.79—Receptacles111.79-346 C.F.R. § 111.79-3Grounding pole.Last amended: 2016Year: 2026Length: 15 wordsOfficial source Cite as 46 C.F.R. § 111.79-3 (2026)Each receptacle outlet that operates at 100 volts or more must have a grounding pole.Previous46 C.F.R. § 111.79-1Next46 C.F.R. § 111.79-9