IEC 60092-376:2025

IEC 60092-376 ®
Edition 4.0 2025-04
INTERNATIONAL
STANDARD
Electrical installations in ships –
Part 376: Cables for control and instrumentation circuits 150/250 V (300 V)

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IEC 60092-376 ®
Edition 4.0 2025-04
INTERNATIONAL
STANDARD
Electrical installations in ships –

Part 376: Cables for control and instrumentation circuits 150/250 V (300 V)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 47.020.60  ISBN 978-2-8327-0372-4

– 2 – IEC 60092-376:2025 © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements . 7
4.1 Rated voltage . 7
4.2 Markings . 8
4.2.1 Indication of origin and voltage identification . 8
4.2.2 Continuity of marking . 8
4.2.3 Core identification . 8
5 Construction requirements . 8
5.1 General description . 8
5.1.1 Overview . 8
5.1.2 Unarmoured single- or double-sheathed cable . 9
5.1.3 Armoured single-sheathed cable with outer sheath only . 9
5.1.4 Armoured double-sheathed cable with inner and outer sheath only . 9
5.1.5 Armoured single-sheathed cable with inner sheath only . 9
5.2 Conductors . 10
5.3 Insulation . 10
5.3.1 Material . 10
5.3.2 Application . 10
5.3.3 Thickness of insulation . 10
5.4 Cabling . 11
5.4.1 General . 11
5.4.2 Core assembly . 11
5.4.3 Forming pair, triple, or quad units . 11
5.4.4 Fillers . 12
5.4.5 Number of cores, pair, triple, or quad units . 12
5.5 Inner covering . 12
5.5.1 General . 12
5.5.2 Thickness of inner covering . 12
5.6 Screen . 12
5.6.1 Individual screen . 12
5.6.2 Collective electrostatic screen . 14
5.7 Inner sheath . 14
5.7.1 Material . 14
5.7.2 Application . 15
5.7.3 Thickness of inner sheath . 15
5.8 Braid armour . 15
5.8.1 General . 15
5.8.2 Braid wire diameter . 15
5.8.3 Coverage density . 15
5.8.4 Application of the armour . 16
5.9 Outer sheath . 16
5.9.1 Material . 16
5.9.2 Application . 16
5.9.3 Thickness of outer sheath . 16

5.9.4 Colour of outer sheath . 16
5.10 Construction for special applications . 16
5.10.1 Cables for installation in explosive atmosphere areas . 16
5.10.2 Cables for installation between areas with and without explosive
atmospheres . 16
6 Tests – Methods and requirements . 17
6.1 General . 17
6.2 Tests on cables for installation in explosive atmospheres . 19
6.3 Tests on cables for installation between areas with and without explosive

atmospheres . 19
Annex A (informative) Core identification . 21
Annex B (informative) Identification of cores of multicore cables . 22
B.1 Marking . 22
B.2 Arrangement of the marks . 22
B.3 Spacing and dimensions of the marks . 22
B.4 Appearance of marking . 23
Annex C (informative) Number of cores, pair, triple or quad units . 24
C.1 Number of cores . 24
C.2 Number of pair, triple, or quad units . 24
Bibliography . 25

Figure B.1 – Arrangement of the marks . 22

Table 1 – Electrical resistance of conductors . 10
Table 2 – Insulation thickness . 11
Table 3 – Thickness of inner covering . 12
Table 4 – Drain wire requirements . 13
Table 5 – Tests applicable to all cables . 17
Table 6 – Additional tests required for halogen-free cables . 19
Table 7 – Additional test required for low smoke cables . 19
Table 8 – Additional tests required for fire resistant cables . 19
Table 9 – Additional tests required for specific performances . 19
Table 10 – Additional test for cables for installation between areas with and without
explosive atmospheres . 20
Table A.1 – Preferred colour code for single unit cables . 21
Table B.1 – Dimensions of the marks . 23

– 4 – IEC 60092-376:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ELECTRICAL INSTALLATIONS IN SHIPS –

Part 376: Cables for control and instrumentation circuits 150/250 V (300 V)

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC Publication(s)"). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 60092-376 has been prepared by subcommittee 18A: Electric cables for ships and mobile
and fixed offshore units, of IEC technical committee 18: Electrical installations of ships and of
mobile and fixed offshore units. It is an International Standard.
This fourth edition cancels and replaces the third edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) addition of a colour code for wires and tapes for unit identification;
b) addition of the core numbering for multicore cables;
c) addition of design and test requirements for cables to be installed in explosive atmosphere
areas;
d) addition of the design and test requirements for cables to be installed between areas with
and without explosive atmospheres.
The text of this International Standard is based on the following documents:
Draft Report on voting
18A/496/FDIS 18A/502/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
A list of all parts in the IEC 60092 series, published under the general title Electrical installations
in ships, can be found on the IEC website.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 60092-376:2025 © IEC 2025
ELECTRICAL INSTALLATIONS IN SHIPS –

Part 376: Cables for control and instrumentation circuits 150/250 V (300 V)

1 Scope
This part of IEC 60092 applies to screened and unscreened cables for control and
instrumentation circuits on ships and offshore units. The cables have an extruded solid
insulation with a voltage rating of 150/250 V (300 V) (see Clause 4) and are intended for fixed
installations.
The various types of cables are given in Clause 5. The construction requirements and test
methods are aligned with those indicated in IEC 60092-350, unless otherwise specified in this
document.
This document
– standardizes cables when they are installed in compliance with the requirements specified
in IEC 60092-352,
– lays down standard construction requirements and characteristics of such cables directly or
indirectly bearing on safety, and
– specifies test methods for checking conformity with those requirements.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 60050-461, International Electrotechnical Vocabulary – Part 461: Electric cables
IEC 60079-14:2013, Explosive atmospheres – Part 14: Electrical installations design, selection
and installation of equipment, including initial inspection
IEC 60092-350:2020, Electrical installations in ships – Part 350: General construction and test
methods of power, control and instrumentation cables for shipboard and offshore applications
IEC 60092-360:2021, Electrical installations in ships – Part 360: Insulating and sheathing
materials for shipboard and offshore units, power, control, instrumentation and
telecommunication cables
IEC 60331-1, Tests for electric cables under fire conditions – Circuit integrity – Part 1: Test
method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to
and including 0,6/1,0 kV and with an overall diameter exceeding 20 mm
IEC 60331-2, Tests for electric cables under fire conditions – Circuit integrity – Part 2: Test
method for fire with shock at a temperature of at least 830 °C for cables of rated voltage up to
and including 0,6/1,0 kV and with an overall diameter not exceeding 20 mm
IEC 60331-21, Tests for electric cables under fire conditions – Circuit integrity – Part 21:
Procedures and requirements – Cables of rated voltage up to and including 0,6/1,0 kV

IEC 60332-1-2, Tests on electric and optical fibre cables under fire conditions – Part 1-2: Test
for vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW pre-
mixed flame
IEC 60332-3-22, Tests on electric and optical fibre cables under fire conditions – Part 3-22:
Test for vertical flame spread of vertically-mounted bunched wires or cables – Category A
IEC 60445, Basic and safety principles for man-machine interface, marking and identification –
Identification of equipment terminals, conductor terminations and conductors
IEC 60684-2, Flexible insulating sleeving – Part 2: Methods of test
IEC 60754-1, Test on gases evolved during combustion of materials from cables – Part 1:
Determination of the halogen acid gas content
IEC 60754-2, Test on gases evolved during combustion of materials from cables – Part 2:
Determination of acidity (by pH measurement) and conductivity
IEC 61034-2, Measurement of smoke density of cables burning under defined conditions –
Part 2: Test procedure and requirements
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60092-350 and
IEC 60050-461 apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
4 General requirements
4.1 Rated voltage
The standard method of designating the rated voltages of cables covered by this document
shall take the form U / U (U ),
o m
where
U is the rated power-frequency voltage between phase conductors and earth or metallic
o
screen, for which the cable is designed;
U is the rated power-frequency voltage between phase conductors for which the cable is
designed;
U is the maximum value of the "highest system voltage" for which the equipment (including
m
cable) can be used (see IEC 60038).
All voltages are given as RMS values.
The standard rated voltages U / U (U ) of the cables considered in this document are:
o m
U / U (U ) = 150 V/250 V (300 V) AC
o m
– 8 – IEC 60092-376:2025 © IEC 2025
For 150/250 (300) V cables, DC voltage up to a maximum of 1,5 times the AC voltage may be
used provided that the voltage to earth does not exceed 250 V.
When circuits are supplied from a low impedance source, attention is drawn to IEC 60092-353
for 600/1 000 V cables having a minimum conductor size of 1,5 mm .
4.2 Markings
4.2.1 Indication of origin and voltage identification
Cables shall comply with IEC 60092-350:2020, 4.1.3 with respect to:
• indication of origin;
• rated voltage and cable construction (number of cores and cross-sectional area of the
cable);
• continuity of marking;
• durability or legibility, or both.
4.2.2 Continuity of marking
The marking is deemed to be continuous if the distance between the end of any marking and
the beginning of the next does not exceed
• 550 mm if the marking is on the outer surface of the cable;
• 275 mm in all other cases.
4.2.3 Core identification
4.2.3.1 General
Cable cores shall be clearly identified by either colours or numbers.
4.2.3.2 Coloured cores
The core colours shall be in compliance with IEC 60445 unless otherwise specified by the
purchaser at the time of ordering.
NOTE Annex A gives details of preferred colour codes.
4.2.3.3 Numbered cores – multicore cables
Identification should be made by the marking of numbers on each core starting from the centre
beginning with 1 in compliance with Annex B unless otherwise specified by the purchaser at the
time of ordering.
4.2.3.4 Unit identification
Individual units of multiunit cables may be identified using numbered or colour tape(s).
5 Construction requirements
5.1 General description
5.1.1 Overview
Shipboard and offshore cables for fixed installations shall be single or multicore cables
generally constructed as specified in 5.1.2, 5.1.3, 5.1.4 or 5.1.5.

5.1.2 Unarmoured single- or double-sheathed cable
• copper conductor, see 5.2;
• insulation, see 5.3;
• cabling (for multicore cables), see 5.4;
• inner covering (mandatory only when a braided electrostatic screening is applied over the
core lay-up), see 5.5;
• electrostatic screening (optional), see 5.6;
• inner sheath (optional), see 5.7;
• outer sheath applied as either one- or two-layer systems, see 5.9.
5.1.3 Armoured single-sheathed cable with outer sheath only
• copper conductor, see 5.2;
• insulation, see 5.3;
• cabling (for multicore cables), see 5.4;
• inner covering below electrostatic screening (mandatory only when a braided electrostatic
screening is applied over the core lay-up), see 5.5;
• electrostatic screening (optional), see 5.6;
• inner covering (mandatory only in case of a braid armour made of galvanised steel wires. In
such case the inner covering shall be extruded), see 5.5;
• braid armour, see 5.8;
• outer sheath applied as either one-or two-layer systems, see 5.9.
5.1.4 Armoured double-sheathed cable with inner and outer sheath only
• copper conductor, see 5.2;
• insulation, see 5.3;
• cabling (for multicore cables), see 5.4;
• inner covering (mandatory only when a braided electrostatic screening is applied over the
core lay-up), see 5.5;
• electrostatic screening (optional), see 5.6;
• inner sheath, see 5.7;
• braid armour, see 5.8;
• outer sheath applied as either one- or two-layer systems, see 5.9.
5.1.5 Armoured single-sheathed cable with inner sheath only
• copper conductor, see 5.2;
• insulation, see 5.3;
• cabling (for multico
...