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


Front view NOTE


Side view b) Side terminal battery


All indicated distances are minimum 300 mm. Figure 1— Free space around battery


5.8


Battery cable terminals shall not depend on spring tension for mechanical connection to the battery terminals. See Figure 1.


6 Battery-disconnect switch


6.1 A battery-disconnect switch shall be installed in the positive conductor of a system with earthed negative or the positive and negative conductor (simultaneously switched) of a fully insulated two-wire d.c. system. The disconnect switch shall be installed so it can be reached quickly and safely for effective use without the use of tools, and it shall be positioned as close as practical to the battery or group of batteries. The following constitute exceptions:


a) outboard-powered craft with engine starting and navigation lighting circuits only;


b) electronic devices with protected memory and protective devices such as bilge pumps and alarms if individually protected by a circuit breaker or fuse as close as practical to the battery terminal;


c) engine/fuel tank compartment ventilation exhaust blower if separately protected by a fuse or circuit breaker as close as practical to the battery terminal;


d) charging devices which are intended to be used when the craft is unattended (e.g. solar panels, wind generators) if individually protected by a fuse or circuit breaker as close as practical to the battery terminal.


6.2 The minimum continuous rating of the battery switch shall be at least equal to the maximum current for which the main circuit breaker is rated. For engine-starting circuits, the battery switch shall be rated appropriately for the engine starter that it serves.


6.3 Remote controlled battery disconnect switches, if used, shall also permit safe manual operation.


7 Conductors 7.1


Top view


Electrical distribution shall use insulated stranded copper conductors (see Table A.2). Conductor insulation shall be of fire-retardant material, e.g. not supporting combustion in the absence of flames.


7.2 Conductor insulation temperature rating in engine spaces shall be 70°C minimum, and rated oil-resistant, or shall be protected by insulating conduit or sleeving. Conductors shall be derated in allowable amperage capacity in accordance with Table A.1.


NOTE For additional conductor specifications, see ISO 6722[1]. © ISO 2012 – All rights reserved 5


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