Exam frequency
60%
Difficulty
2/5
Drill questions
46
Source excerpts
46 CFR §111.15-2
§ 111.15-2 -2 Battery construction. (a) A battery cell, when inclined at 40 degrees from the vertical, must not spill electrolyte. (b) Each fully charged lead-acid battery must have a specific gravity that meets Section 11 of IEEE 45.1-2017 (incorporated by reference; see § 110.10-1 of this subchapter). (c) Batteries must not evolve hydrogen at a rate exceeding that of a similar size lead-acid battery under similar charging condition. (d) Batteries must be constructed to take into account the environmental conditions of a marine installation, including temperature, vibration, and shock. [CGD 94-108, 61 FR 28277, June 4, 1996, as amended by USCG-2003-16630, 73 FR 65196, Oct. 31, 2008; USCG-2020-0075, 88 FR 16361, Mar. 16, 2023]
46 CFR §111.15-25
§ 111.15-25 -25 Overload and reverse current protection. (a) An overload protective device must be in each battery conductor, except conductors of engine cranking batteries and batteries with a nominal potential of 6 volts or less. For large storage battery installations, the overcurrent protective devices must be next to, but outside of, the battery room. (b) Except when a converter is used, the charging equipment for all batteries with a nominal voltage more than 20 percent of line voltage must protect automatically against reversal of current. [CGD 74-125A, 47 FR 15236, Apr. 8, 1982, as amended by USCG-2020-0075, 88 FR 16361, Mar. 16, 2023]
46 CFR §111.15-3
§ 111.15-3 -3 Battery categories. (a) A battery installation is classified as one of three types, based upon power output of the battery charger, as follows: (1)A large battery installation is one connected to a battery charger that has an output of more than 2 kW computed from the highest possible charging current and the rated voltage of the battery installation. (2)A moderate battery installation is one connected to a battery charger that has an output of between 0.2 kW and 2 kW computed from the highest possible charging current and the rated voltage of the battery installation. (3)A small battery installation is one connected to a battery charger that has an output of less than 0.2 kW computed from the highest possible charging current and the rated voltage of the battery installa…
46 CFR §111.15-30
§ 111.15-30 -30 Battery chargers. Each battery charger enclosure must meet § 111.01-9. Additionally, each charger must be suitable for the size and type of battery installation that it serves. Chargers incorporating grounded autotransformers must not be used. Except for converters, chargers with a voltage exceeding 20 percent of the line voltage must be provided with automatic protection against reversal of current. [CGD 94-108, 61 FR 28278, June 4, 1996; 61 FR 36787, July 12, 1996; USCG-2020-0075, 88 FR 16361, Mar. 16, 2023]
46 CFR §111.15-5
§ 111.15-5 -5 Battery installation. (a)Each large battery installation must be in a room that is only for batteries or a box on deck. Installed electrical equipment must meet the hazardous location requirements in subpart 111.105 of this part. (b)Each moderate battery installation must be in a battery room, in a box on deck, or in a box or locker in another space such as an engineroom, storeroom, or similar space, except if a moderate battery installation is in a ventilated compartment such as the engineroom and is protected from falling objects, a box or locker is not required. A moderate battery installation must not be in a sleeping space. An engine cranking battery for one or more engines must be as close as possible to the engine or engines. (c)Small size battery installations must…
46 CFR §183.350
§ 183.350 Batteries—general. (a) Where provisions are made for charging batteries, there must be natural or induced ventilation sufficient to dissipate the gases generated. (b) Each battery must be located as high above the bilge as practicable, secured to protect against shifting with the roll and pitch of the vessel, and free from exposure to water splash or spray. (c) Batteries must be accessible for maintenance and removal. (d) Connections must be made to battery terminals with permanent type connectors. Spring clips or other temporary type clamps are prohibited. (e) Batteries must be mounted in trays lined with, or constructed of, a material that is resistant to damage by the electrolyte. (f) Battery chargers must have an ammeter connected in the charging circuit. (g) If the ba…
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