BS EN ISO 13297:2021+A11:2023 ISO 13297:2020+A1:2022
3.28 double-pole circuit breaker
device intended to interrupt both the neutral conductor (3.9) and active (phase) conductors (3.12) in a circuit simultaneously when a designated current is exceeded for a predetermined time
3.29 fuse
protective device that interrupts the circuit irreversibly when the current flow reaches a specified value for a specific time
[SOURCE: ISO 8820-1:2014, 3.2, modified – Note 1 to entry has been deleted.]
3.30 galvanic isolator
device which can be installed in series with the AC protective conductor (3.10) of the shore power cable to block low voltage DC galvanic current flow, but permits the passage of AC normally associated with the protective conductor
3.31 inverter
device powered by a DC source, designed primarily to provide AC power at a required voltage and frequency
3.32 inverter/charger
device designed to supply either AC power to a craft’s electrical system or to utilize the craft’s AC electrical distribution system to charge or maintain a battery or batteries supplying DC
3.33 extraneous conductive part
conductive part liable to introduce a potential, generally ground/earth potential, and not forming part of the electrical installation
3.34 ground plate
means to conduct the electrical current from a craft's conductive element to the water
3.35 craft small craft
recreational boat, and other watercraft using similar equipment, of up to 24 m length of hull (LH) Note 1 to entry: The measurement methodology for the length of hull is defined in ISO 8666. [SOURCE: ISO 8666:2020, 3.15, modified – Note 1 to entry has been added.]
4 General requirements, DC and AC systems 4.1 The hull of a metallic hull craft shall not be used as a circuit conductor.
4.2 Craft equipped with both DC and AC electrical systems shall have their distribution from either separate panel boards, or from a common one with a partition, or from other positive means to separate clearly the AC and DC sections from each other, and these shall be clearly identified.
4.3 Wiring diagrams to identify circuits, components and conductors shall be included with the craft. After completing an AC installation, it is recommended to perform a system test according to Annex C.
© ISO 2022 – All rights reserved 5
Distributed by the RYA under licence number 2020ET001 © BSI
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