BS EN ISO 13297:2021+A11:2023 ISO 13297:2020+A1:2022
19.3 The protective conductor shall have a cross-sectional area equal to that of the live conductors. a) For ground/earth continuity conductors (protective conductors) in flexible cables or flexible cords:
1) a cross-section equal to that of the current-carrying conductor if the latter is less than or equal to 16mm2; or
2) a cross-section equal to 50 % of that of the current-carrying conductor if the latter is greater than 16mm2, subject to a minimum of 16mm2.
b) For ground/earth continuity conductors (protective conductors) incorporated in fixed multicore cables:
1) a cross-section equal to that of the main conductors if the latter is less than or equal to 16mm2 subject to a minimum of 1,5mm2; or
2) a cross-section of not less than 50% of the cross-section of the main conductor if the latter is more than 16mm2, subject to a minimum of 16mm2.
19.4 Active (phase) and neutral conductors of the AC system shall be identified. Identification can be made by insulation colour as defined below, by numbering or by other means on the wiring diagram for the system supplied with the craft. For single-phase systems:
— active (phase) conductors shall be black or brown; — neutral conductors shall be white or light blue; — protective conductors shall be green or green with a yellow stripe (see 6.1). NOTE
in the system.
Yellow, green or green with a yellow stripe insulation colour shall not be used for active (phase) or neutral conductors of the AC system.
20 System wiring, DC and AC systems 20.1 Conductor connections shall be in locations protected from the weather or in enclosures conforming to IEC 60529:1989 – IP 55 as a minimum. Connections above deck exposed to intermittent immersion shall be in enclosures conforming to IEC 60529:1989 – IP 67 as a minimum.
20.2 Conductors and cables shall be supported throughout their length in conduits, cable trunking or trays, or by individual supports at maximum intervals of 450 mm.
20.3 Conductors which could be exposed to physical damage shall be protected by sheaths, conduits or other equivalent means.
20.4 Conductors of a DC circuit shall not be contained in the same wiring system as an AC circuit, unless one of the following methods of separation is used:
a) for a multicore cable or cord, the cores of the DC circuit are separated from the cores of the AC circuit by an grounded/earthed metal screen of equivalent current carrying capacity to that of the largest core in either circuit;
b) the cables are insulated for their system voltage and installed in a separate compartment of a cable conduit or trunking system;
c) the cables are installed on a tray or ladder where physical separation is provided by a partition; © ISO 2022 – All rights reserved
A coloured stripe can be added to active (phase) and neutral conductor insulations for identification
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Distributed by the RYA under licence number 2020ET001 © BSI
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