18 Electrical Systems
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - SCV Code - Code of Safety for Small Commercial Vessels Operating in the Caribbean - Chapter IV - Machinery - Part D - Electrical Arrangements - 18 Electrical Systems

18 Electrical Systems

  18.1 Electrical systems shall be two wire.

  18.2 A system in which there is no intentional connection of the circuit to earth (an insulated system) shall be provided with double pole switches, except that single pole switches may be used in the final sub-circuit.

  18.3 Single pole switches are accepted in a system with one pole earthed. Fuses shall not be installed in an earthed conductor.

  18.4 The insulation resistance, using a low voltage instrument so as not to cause damage, shall not be less than 0.3 megohm for all new vessels, but a minimum of 0.1 megohm can be accepted on existing vessels.

  18.5 All circuits, except the main supply from the battery to the starter motor and electrically driven steering motors, shall be provided with electrical protection against overload and short circuit, i.e. fuses or circuit breakers shall be installed. Short circuit protection shall be for more than twice the total rated current of the loads in the circuit protected.

  18.6 Steering motors shall have an overload alarm in lieu of overload protection.

Parent topic: Part D - Electrical Arrangements
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