INTERNATIONAL STANDARD


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


Small craft — Electrical systems — Extra-low-voltage d.c. installations


1 Scope


This International Standard establishes the requirements for the design, construction and installation of extra- low-voltage direct current (d.c.) electrical systems which operate at nominal potentials of 50 V d.c. or less on small craft of hull length up to 24 m. Conductors that are part of an outboard engine assembly and that do not extend beyond the outboard engine manufacturer’s supplied cowling are not included.


Additional information to be included in the owner’s manual is listed in Annex B.


2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.


ISO 8846, Small craft ― Electrical devices ― Protection against ignition of surrounding flammable gases ISO 10239, Small craft ― Liquefied petroleum gas (LPG) systems ISO 10240, Small craft ― Owner’s manual IEC 60529, Degrees of protection provided by enclosures (IP code)


3 Terms and definitions For the purposes of this document, the following terms and definitions apply.


3.1 equipotential bonding conductor normally non-current-carrying conductor used to put various exposed conductive parts of electrical devices and extraneous conductive parts at a substantially equal potential


3.2 engine negative terminal terminal on the engine, starter or solenoid to which the negative battery cable is connected


3.3 main grounding earthing point main point or bus that provides connection to the common ground for the d.c. negative conductor, for a.c. protective grounding conductors and neutral, where relevant, and where necessary functional grounding


NOTE It may include any conductive part of the wetted surface of the hull in permanent contact with the water, depending on the overall system design.


3.4 ignition-protected equipment equipment designed and constructed to give protection against ignition of surrounding flammable gases


NOTE See ISO 8846.


© ISO 2012 – All rights reserved


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