EN ISO 13297:2012

SLOVENSKI STANDARD
01-april-2013
1DGRPHãþD
SIST EN ISO 13297:2001
0DODSORYLOD(OHNWULþQLVLVWHPL,QãWDODFLMH]DL]PHQLþQLWRN,62
Small craft - Electrical systems - Alternating current installations (ISO 13297:2012)
Kleine Wasserfahrzeuge - Elektrische Systeme - Wechselstromanlagen (ISO
13297:2012)
Petits navires - Systèmes électriques - Installations de distribution de courant alternatif
(ISO 13297:2012)
Ta slovenski standard je istoveten z: EN ISO 13297:2012
ICS:
47.020.60 (OHNWULþQDRSUHPDODGLMLQ Electrical equipment of ships
NRQVWUXNFLMQDPRUMX and of marine structures
47.080 ýROQL Small craft
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 13297
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2012
ICS 47.080 Supersedes EN ISO 13297:2000
English Version
Small craft - Electrical systems - Alternating current installations
(ISO 13297:2012)
Petits navires - Systèmes électriques - Installations à Kleine Wasserfahrzeuge - Elektrische Systeme -
courant alternatif (ISO 13297:2012) Wechselstromanlagen (ISO 13297:2012)
This European Standard was approved by CEN on 30 September 2012.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 13297:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 94/25/EC, as amended by Directive 2003/44/EC .4

Foreword
This document (EN ISO 13297:2012) has been prepared by Technical Committee ISO/TC 188 "Small craft".
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by April 2013, and conflicting national standards shall be withdrawn at the
latest by April 2013.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 13297:2000.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive, see informative Annex ZA, which is an integral part of this document.
According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 13297:2012 has been approved by CEN as a EN ISO 13297:2012 without any modification.

Annex ZA
(informative)
Relationship between this European Standard and the Essential
Requirements of EU Directive 94/25/EC, as amended by
Directive 2003/44/EC
This European Standard has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association to provide one means of conforming to Essential Requirements of
the New Approach Directives 94/25/EC, as amended by Directive 2003/44/EC.
Once this standard is cited in the Official Journal of the European Union under that Directive and has been
implemented as a national standard in at least one Member State, compliance with the normative clauses of
this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption of
conformity with the corresponding Essential Requirements of that Directive and associated EFTA regulations.
Table ZA.1 — Correspondence between this European Standard and EU Directives
Corresponding annexes/Paragraphs
Clause(s)/sub-clause(s) of this
of Directive 94/25/EC as amended Comments
European Standard
2003/44/EC
All clauses Annex IA2, Clause 5.3, Electrical
systems.
Clause 11 Annex IA2, Clause 5.6.1 Fire protection In respect of avoiding wiring above hot
areas of machines.
Annex B Annex IA2, Clause 2.5 Owner's manual

WARNING: Other requirements and other EU Directives may be applicable to the product(s) falling within the
scope of this standard.
INTERNATIONAL ISO
STANDARD 13297
Third edition
2012-10-01
Small craft — Electrical systems —
Alternating current installations
Petits navires — Systèmes électriques — Installations à courant alternatif
Reference number
ISO 13297:2012(E)
©
ISO 2012
ISO 13297:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 13297:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 4
5 Marking . 6
6 Ignition sources . 7
7 Overcurrent protection . 7
7.1 General . 7
7.2 Supply circuits . 7
7.3 Branch circuits . 8
8 Ground-fault protection/earth-leakage protection. 8
9 Appliances and equipment . 8
10 System wiring . 8
11 Conductor and cable installation . 9
12 Panel boards (switchboards) . 11
13 Socket outlets . 11
14 Power source options .12
15 Inverters and inverter/chargers .12
Annex A (normative) Conductor requirements.15
Annex B (normative) Instructions to be included with owner’s manual .17
Annex C (informative) Recommended system tests .18
Annex D (informative) Typical a.c. system diagrams .19
Annex E (informative) Typical battery charger/inverter diagrams .23
Bibliography .25
ISO 13297:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 13297 was prepared by Technical Committee ISO/TC 188, Small craft.
This third edition cancels and replaces the second edition (ISO 13297:2000), which has been technically revised.
iv © ISO 2012 – All rights reserved

INTERNATIONAL STANDARD ISO 13297:2012(E)
Small craft — Electrical systems — Alternating current
installations
IMPORTANT — The colours represented in the electronic file of this document can be neither viewed on screen
nor printed as true representations. Although the copies of this document printed by ISO have been produced
to correspond (with an acceptable tolerance as judged by the naked eye) to the requirements of ISO 3864-4, it is
not intended that these printed copies be used for colour matching. Instead, consult ISO 3864-4, which provides
colorimetric and photometric properties together with, as a guideline, references from colour order systems.
1 Scope
This International Standard specifies the requirements for the design, construction and installation of low-
voltage alternating current electrical systems which operate at nominal voltages of less than 250 V single
phase on small craft of hull length up to 24 m.
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 7010, Graphical symbols — Safety colours and safety signs — Registered safety signs
ISO 8846, Small craft — Electrical devices — Protection against ignition of surrounding flammable gases
1)
ISO 10133:2000 , Small craft — Electrical systems — Extra low voltage d.c. installation
ISO 10240, Small craft — Owner’s manual
IEC 60079-0, Explosive atmospheres — Part 0: General requirements
IEC 60309-2, Plugs, socket-outlets and couplers for industrial purposes — Part 2: Dimensional interchangeability
requirements for pin and contact-tube accessories
IEC 60446, Basic and safety principles for man-machine interface marking and identification — Identification
of conductors by colours or numerals
IEC 60529:1989, 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
craft’s earth
protective ground
connection, provided for safety purposes, that is established by a conducting connection with the common
ground/earth (potential of the earth’s surface)
1) Under revision.
ISO 13297:2012(E)
3.2
equipotential bonding conductor
normally non-current-carrying conductor used to put various exposed conductive parts of direct current
electrical devices and extraneous conductive parts at a substantially equal potential
3.3
residual current device
RCD
electro-mechanical switching device or association of devices designed to make, carry and break currents
under normal service conditions and to cause the opening of contacts when the residual current attains a given
value under specified conditions
NOTE RCDs serve to reduce the risk of injury to people from electrical shock hazard, and damage to equipment from
leakage of stray currents to earth or to other circuits.
3.4
polarization transformer
transformer which automatically orientates the neutral and active (phase) conductors in the system in the same
polarity orientation as the polarized system of the craft
3.5
isolation transformer
transformer with protective separation between the input and output windings and the protective conductor
3.6
neutral conductor
conductor connected to the neutral point of a system and capable of contributing to the transmission of
electrical energy
3.7
protective conductor
protective grounding conductor
conductor, not normally carrying current, used for some measure of protection against electric shock, for
electrically connecting any of the following parts of electrical equipment to the craft’s ground (earth) and to the
shore a.c. grounding conductor through the shore power cable:
a) exposed conductive parts of electrical equipment;
b) extraneous conductive parts;
c) the main grounding (earthing) terminal;
d) earth electrode(s);
e) the earth point of a source, or an artificial neutral
3.8
live conductor
conductor or conductive part intended to be energized in normal use, including a neutral conductor
3.9
active (phase) conductor
any conductor that is maintained at a difference of potential from the neutral or protective conductor
NOTE In a system that does not include a neutral or protective conductor, all conductors are to be considered
active conductors.
3.10
ignition-protected equipment
equipment designed and constructed to give protection against ignition of surrounding flammable gases
NOTE See ISO 8846.
2 © ISO 2012 – All rights reserved

ISO 13297:2012(E)
3.11
overcurrent protection device
device designed to interrupt the circuit when the current flow exceeds a predetermined value for a
predetermined time
EXAMPLE A fuse or circuit breaker.
3.12
panel board
switchboard
assembly of devices for the purpose of controlling and/or distributing electrical power
NOTE Examples of devices include circuit breakers, fuses, switches, instruments and indicators.
3.13
polarized system
system in which the live conductors are connected in the same relation to all terminals on devices or receptacles
(socket outlets) in a circuit
3.14
shore power appliance inlet
fitting designed for mounting on a craft, of a shrouded male type, to connect to the female connector on the craft
end of the shore power cable in order to make the electrical connection for transmission of electrical energy
3.15
trip-free circuit breaker
mechanical switching device capable of making, carrying and breaking currents under normal circuit conditions
and also making, carrying for a specified time and breaking currents under specified abnormal circuit conditions
such as those of overload or short circuit, and which is designed so that the resetting means cannot be
manually held in place to override the current-interrupting mechanism
3.16
accessible
capable of being reached for inspection, removal or maintenance without removing the craft’s permanent structure
3.17
readily accessible
capable of being reached quickly and safely for effective use without the use of tools
3.18
sheath
uniform and continuous protective tubular covering of metallic or non-metallic material around one or more
insulated conductors
NOTE Examples of appropriate materials include moulded rubber, moulded plastic, woven sleeving or flexible tubing.
3.19
conduit
part of a closed wiring system of circular or non-circular cross-section for insulated conductors and/or cables
in electrical installations, allowing them to be drawn in and/or replaced
3.20
cable trunking
system of closed enclosures comprising a base with a removable cover intended for the complete surrounding
of insulated conductors, cables, cords and for the accommodation of other electrical equipment
3.21
double-pole circuit breaker
device intended to interrupt both the neutral and active (phase) conductors in a circuit simultaneously when a
designated current is exceeded for a predetermined time
ISO 13297:2012(E)
3.22
captive spade terminal
conductor terminal component which is maintained in the connection to the screw or stud even when the
threaded terminal fastener is loose
3.23
exposed conductive part
conductive part of electrical equipment, which can be readily touched and which is not normally live, but which
can become live under fault conditions
3.24
fuse
protective device that interrupts the circuit irreversibly when the current flow reaches a specified value for a
specific time
[SOURCE: ISO 8820-1:2008, 3.1]
3.25
galvanic isolator
device which can be installed in series with the a.c. protective conductor of the shore power cable to block low
voltage d.c. galvanic current flow, but permit the passage of a.c. normally associated with the protective conductor
3.26
inverter
device powered by batteries, designed primarily to provide a.c. at a required voltage and frequency
3.27
inverter/charger
device designed to supply either a.c. power to a craft’s electrical system or to utilize the craft’s a.c. electrical
distribution system to charge or maintain a battery or batteries supplying d.c.
3.28
extraneous conductive part
conductive part liable to introduce a potential, generally earth potential, and not forming part of the electrical installation
4 General requirements
4.1 The protective conductor insulation shall be green or green with a yellow stripe. Neither colour shall be
used for current-carrying conductors.
NOTE The equipotential bonding conductor of the d.c. electrical system (see ISO 10133) also uses green or green
with a yellow stripe insulation and is connected to various exposed conductive parts of d.c. electrical devices, other
extraneous conductive parts and the d.c. negative ground/earth.
4.2 For crafts having a fully insulated d.c. system in accordance with ISO 10133, the a.c. protective conductor
shall be connected to:
a) the hull of a metallic hulled craft;
b) for non-conductive hulls, the craft’s external ground/earth or ground plate.
4.3 The hull of a metallic hull craft shall not be used as a circuit conductor.
4.4 The a.c. protective conductor(s) shall be provided with a final (single) connection to the hull of a metallic
hull craft, or if the craft has a non-metallic hull, to the main grounding/earthing point of the craft.
4.5 On metallic hulls, the point of connection of the protective conductor shall be located above any anticipated
water accumulation.
4 © ISO 2012 – All rights reserved

ISO 13297:2012(E)
4.6 Metallic housings or enclosures of permanently installed a.c. electrical appliances shall be connected to
the protective conductor system in the craft.
4.7 Individual circuits shall not be capable of being energized by more than one source of electrical power at
a time. Each shore power inlet, generator or inverter is a separate source of electrical power. The transfer from
one power source circuit to another shall be made by a means which opens all current-carrying conductors,
active (phase) and neutral, before closing the alternate source circuit, to prevent arc-over between contacts,
and should be interlocked by mechanical or electromechanical means. The conductors of both circuits-carrying
conductors, active (phase) and neutral, shall be broken simultaneously when changing power sources.
The requirements for overcurrent protection and sizing of the switch are found in Clause 7. A combination of
power sources can be used provided that:
— the device is constructed and tested to an applicable recognized standard;
— the device includes anti-islanding protection;
— the device includes personnel protection against backfeeding; and
— the installation is performed according to the manufacturer’s instructions.
4.8 Energized parts of electrical equipment shall be guarded against accidental contact by the use of
enclosures of at least IEC 60529-IP 2X or other protective means which shall not be used for non-electrical
equipment. Access to energized parts of the electrical system shall require the use of hand tools or be at least
IP 2X, unless otherwise specified. A suitable warning sign shall be displayed (see 5.2).
4.9 The neutral conductor shall be grounded (earthed) only at the source of power, i.e. at the onboard
generator, the secondary of the isolation or polarization transformer, the shore power connection or inverter.
The shore power neutral shall be grounded (earthed) through the shore power cable and shall not be grounded
(earthed) on board the craft or:
a) for systems using an isolation transformer or polarization transformer, both the generator or inverter neutral
and the transformer secondary neutrals may be grounded at the a.c. main grounding bus instead of at the
generator, inverter, or transformer secondaries;
b) for systems using an isolation transformer or polarization transformer, or no shore power provision, both
the generator or inverter neutral and the transformer secondary neutrals may be ungrounded provided
double-pole protection and switching is installed.
4.10 When an optional galvanic isolator is fitted in the protective conductor to resist imported stray galvanic
current flow while permitting the passage of a.c. current, failure of the isolator shall not result in an open circuit.
4.11 Reverse polarity indicating devices providing a continuous visible or audible signal shall be installed
in shore power systems and shall respond to the reversal of the active (phase) and the neutral conductors, if
the polarity of the system must be maintained for the proper operation of the electrical devices in the system.
Otherwise, a branch circuit shall be provided with overcurrent protection in only the active (phase) conductors.
This does not apply for the systems indicated below in a) and b).
Reverse polarity indicating devices are not required on craft employing:
a) unpolarized systems using double-pole branch circuit protection;
b) polarization or isolation transformers that establish polarity on the craft.
NOTE 1 Reverse polarity indicating devices might not respond to reversals of a live conductor and the protective conductor.
NOTE 2 Reverse polarity indicating devices respond to the reversal of an active (phase) conductor or grounded
conductor only when there is continuity of the protective conductor to shore.
ISO 13297:2012(E)
4.12 Craft equipped with both d.c and a.c. electrical systems shall have their distribution from either separate
panel boards or from a common one with a partition or other positive means provided to separate clearly
the a.c. and d.c. sections from each other, and shall be clearly identified. Wiring diagrams to identify circuits,
components and conductors shall be included with the craft.
NOTE After completing an a.c. installation it is recommended to perform a system test according to Annex C.
5 Marking
5.1 Shore power inlets shall be marked to indicate voltage and current; they shall also be marked with the electricity
warning symbol (ISO 7010 – W012) and the “refer to instruction manual/booklet” symbol (ISO 7010 – M002).
5.2 A permanently mounted waterproof warning sign shall be located at the panel board on the craft. The sign
shall include the information shown in Figure 1a) or 1b).
General warning sign Warning; Electricity Warning; Flammable Refer to instruction
ISO 7010 – W001 ISO 7010 – W012 material manual/booklet
ISO 7010 – W021 ISO 7010 – M002
a) Suggested warning sign using symbols
WARNING — To minimize shock and fire hazards:
1 Turn off craft’s shore power connection switch before connecting or disconnecting shore
power cable.
2 Connect shore power cable to craft’s inlet before connecting to shore power source.
3 If incorrect polarity is indicated, immediately disconnect cable.
4 Disconnect shore power cable at shore power source first.
5 Close shore power inlet cover tightly.
DO NOT ALTER SHORE POWER CABLE CONNECTORS
NOTE 1 Item 3 is required only if a polarity indicator is installed in the system.
NOTE 2 Items 2, 4 and 5 are not required for permanently connected shore power cable installations.
b) Suggested warning sign with text in language appropriate to the country of use
Figure 1 ― Suggested warning signs
5.3 Switches and controls shall be marked to indicate their function, unless the purpose of the switch is
obvious and if operation of the switch could not, under normal operating conditions, cause a hazardous condition.
5.4 Electrical equipment shall be marked or identified to indicate:
a) manufacturer’s identification;
6 © ISO 2012 – All rights reserved

ISO 13297:2012(E)
b) model number or designation;
c) electrical rating in volts and amperes or volts and watts;
d) phase and frequency, if applicable;
e) ignition protected, if applicable, by ISO 8846.
6 Ignition sources
Electrical components installed in compartments which in normal operation can contain LPG gases or petrol
vapor, e.g. petrol tank, engine compartment and LPG lockers, shall be designed to be compliant with ISO 8846
or designed according to IEC 60079-0.
NOTE ISO 10088 requires that all components in petrol engines, petrol and LPG tank compartments be ignition-
protected to prevent open sparks. This applies to the entire engine, as well as all electrical contacts, commutators,
brushes, collector rings, switches, relays, generators, fuses, distributors, engine-cranking motors, propulsion trim motors,
etc. ISO 8846 requires components to withstand any operating conditions of the device, including the maximum achievable
overload up to 400 % of the rated current (circuit-breakers, switches and the like) and a stalled rotor condition for any motor
with the circuit protected in an overcurrent protective device specified by the product manufacturer.
7 Overcurrent protection
7.1 General
7.1.1 In unpolarized systems double-pole circuit breakers opening both active (phase) and neutral conductors
are required.
7.1.2 Fuses shall not be installed in unpolarized systems. If used in polarized systems, fuses shall be located
to interrupt the active (phase) conductor.
7.1.3 Overcurrent protection devices for motor loads shall have a predetermined value of amperage consistent
with electrical demand of the protected circuit.
7.1.4 All a.c. motor installations and each motor of a motor-operated device shall be individually protected
in accordance with 7.1.3 or by an integral overcurrent or thermal protection device unless the motors will not
overheat under continuous locked rotor conditions.
7.1.5 The rat
...