Exam frequency
90%
Difficulty
2/5
Drill questions
50
Source excerpts
46 CFR §111.01-1
§ 111.01-1 -1 General. (a) Electric installations on vessels must ensure: (1) Maintenance of services necessary for safety under normal and emergency conditions. (2) Protection of passengers, crew, other persons, and the vessel from electrical hazards. (3) Maintenance of system integrity through compliance with the applicable system requirements (IEEE, NEC, IEC, etc.) to which plan review has been approved. (b) Combustible material should be avoided in the construction of electrical equipment. [CGD 74-125A, 47 FR 15236, Apr. 8, 1982, as amended by CGD 94-108, 61 FR 28275, June 4, 1996; 62 FR 23907, May 1, 1997]
46 CFR §177.405
§ 177.405 General arrangement and outfitting. (a)The general construction of the vessel must be such as to minimize fire hazards insofar as it is reasonable and practicable. (b)Internal combustion engine exhausts, boiler and galley uptakes, and similar sources of ignition must be kept clear of and suitably insulated from combustible material. Dry exhaust systems for internal combustion engines on wooden or fiber reinforced plastic vessels must be installed in accordance with ABYC P-1 (incorporated by reference, see 46 CFR 175.600). (c)Machinery and fuel tank spaces must be separated from accommodation spaces by boundaries that prevent the passage of vapors. (d)Paint and flammable liquid lockers must be constructed of steel or equivalent material, or wholly lined with steel or equivalen…
46 CFR §183.200
§ 183.200 General design, installation, and maintenance requirements. Electrical equipment on a vessel must be installed and maintained to: (a) Provide services necessary for safety under normal and emergency conditions; (b) Protect passengers, crew, other persons, and the vessel from electrical hazards, including fire, caused by or originating in electrical equipment, and electrical shock; (c) Minimize accidental personnel contact with energized parts; and (d) Prevent electrical ignition of flammable vapors.
46 CFR §183.220
§ 183.220 General safety provisions. (a) Electrical equipment and installations must be suitable for the roll, pitch, and vibration of the vessel underway. (b) All equipment, including switches, fuses, lampholders, etc., must be suitable for the voltage and current utilized. (c) Receptacle outlets of the type providing a grounded pole or a specific direct current polarity must be of a configuration that will not permit improper connection. (d) All electrical equipment and circuits must be clearly marked and identified. (e) Any cabinet, panel, box, or other enclosure containing more than one source of power must be fitted with a sign warning persons of this condition and identifying the circuits to be disconnected.
46 CFR §183.530
§ 183.530 Hazardous areas. (a) Electrical equipment in spaces containing machinery powered by, or fuel tanks for, gasoline or other fuels having a flashpoint of 43.3 °C (110 °F) or lower must be explosion-proof or ignition-protected, or be part of an intrinsically safe system. (b) Electrical equipment in lockers used to store paint, oil, turpentine, or other flammable liquids must be explosion-proof or be part of an intrinsically safe system. (c) Explosion-proof equipment and intrinsically safe systems must meet the requirements of § 111.105 in subchapter J of this chapter. [CGD 85-080, 61 FR 997, Jan. 10, 1996; 61 FR 24465, May 15, 1996]
46 CFR §28.350
§ 28.350 § 28.350 General requirements for electrical systems. (a) Electrical equipment exposed to the weather or in a location exposed to seas must be waterproof, watertight, or enclosed in a watertight housing. (b) Aluminum must not be used for current carrying parts of electrical equipment or wiring. (c) As far as practicable, electrical equipment must not be installed in lockers used to store paint, oil, turpentine, or other flammable or combustible liquid. If electrical equipment, such as lighting, is necessary in these spaces, it must be explosion-proof or intrinsically safe. (d) Explosion-proof and intrinsically safe equipment must meet the requirements of 46 CFR part 111, subpart 111.105. (e) Metallic enclosures and frames of electrical equipment must be grounded. (f) Each ve…
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