US lawFederal (United States)RegulationsTitle 46 CFR — ShippingChapter I — COAST GUARD, DEPARTMENT OF HOMELAND SECURITYPart 111 — ELECTRIC SYSTEMS—GENERAL REQUIREMENTSSubpart 111.40—Panelboards111.40-946 C.F.R. § 111.40-9Locking device.Last amended: 2016Year: 2026Length: 17 wordsOfficial source Cite as 46 C.F.R. § 111.40-9 (2026)The door of each panelboard enclosure that is accessible to any passenger must have a locking device.Previous46 C.F.R. § 111.40-7Next46 C.F.R. § 111.40-11