BS EN ISO 10133:2017 ISO 10133:2012(E)


— protective conductors: green or green with a yellow stripe. NOTE 2 A colour stripe may be added to conductor insulation for identification in the system.


Crafts with a.c. and d.c. systems shall avoid the use of brown, white or light blue insulation colour in the d.c. system, unless clearly separated from the a.c. conductors and identified as d.c. NOTE 3 For additional conductor specifications see ISO 6722[1].


7.12 Current-carrying conductors of the d.c. system shall be routed above areas where water can accumulate, e.g. bilges, and at least 25 mm above the level at which the automatic bilge pump switch activates.


EXCEPTION If conductors have to be routed below anticipated bilge water level, the wiring and connections shall be in an IEC 60529 IP67 enclosure, as a minimum, and there shall be no connection below the foreseeable water level.


7.13 Conductors shall be routed away from exhaust pipes and other heat sources which can damage the insulation. The minimum clearance is 50 mm from water-cooled exhaust components and 250 mm from dry exhaust components, unless an equivalent thermal barrier is provided.


8 Overcurrent protection


8.1 A manually reset trip-free circuit breaker or a fuse shall be installed within 200 mm of the source of power for each circuit or conductor of the system, measured along the conductor. See Annex C. EXCEPTION—This requirement does not include cranking motor conductors.


If the conductor is connected directly to the battery terminal and is contained throughout its entire distance in a sheath or enclosure such as a conduit, junction box, control box or enclosed panel, the overcurrent protection shall be placed as close as practicable to the battery, but shall not exceed 1,8 m.


If the conductor is connected to a source of power other than a battery terminal and is contained throughout its entire distance in a sheath or enclosure such as a conduit, junction box, control box or enclosed panel, the overcurrent protection shall be placed as close as practicable to the point of connection to the source of power, but shall not exceed 1 m.


Overcurrent protection is not required in conductors from self-limiting alternators with integral regulators if the conductor is less than 1 m, is connected to a source of power other than the battery, and is contained throughout its entire distance in a sheath or enclosure.


Conductors less than 200 mm in length are exempt from overcurrent protection requirements.


8.2 The voltage rating of each fuse or circuit breaker shall not be less than the nominal circuit voltage; the current rating shall not exceed the value for the smallest size conductor in the circuit. 8.3


Output circuits of self-limiting generators and battery chargers do not require fuses or circuit breakers. 9 Panel boards (switchboards)


9.1 Panel boards (switchboards) shall be installed such that the control elements, indicating instruments, circuit breakers and fuses are capable of being reached quickly and safely for effective use without the use of tools. The terminal side shall be capable of being reached for inspection, removal or maintenance without removal of permanent structures of the craft.


© ISO 2012 – All rights reserved


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