IEC 61084-2-1:2017

Cable trunking systems and cable ducting systems for electrical installations - Part 2-1: Particular requirements - Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings

IEC 61084-2-1:2017 specifies requirements and tests for cable trunking systems (CTS) and cable ducting systems (CDS) intended for the accommodation, and where necessary for the electrically protective separation, of insulated conductors, cables and possibly other electrical equipment in electrical and/or communication systems installations. The maximum voltage of these installations is 1 000 V AC and 1 500 V DC.
These systems are intended for mounting on walls and/or ceilings. They can be embedded, installed in a flush or semi-flush state, surface mounted or mounted away from the surface using fixing devices.
This document does not apply to conduit systems, cable tray systems, cable ladder systems, power track systems or equipment covered by other standards.
This second edition cancels and replaces the first edition published in 1996. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- classification;
- construction;
- mechanical and electrical properties.
This International Standard is to be used in conjunction with IEC 61084-1:2017.

Systèmes de goulottes et systèmes de conduits-profilés pour installations électriques - Partie 2-1: Exigences particulières - Systèmes de goulottes et systèmes de conduits-profilés prévus pour être montés sur les murs et les plafonds

La présente partie de la série IEC 61084 spécifie les exigences et les essais pour les systèmes de goulottes (SG) et les systèmes de conduits-profilés (SCP) destinés au logement de conducteurs isolés, câbles et éventuels autres équipements électriques et, si nécessaire, à leur séparation de protection électrique, dans des installations électriques et/ou de systèmes de communication. La tension maximale de ces installations est de 1 000 V en courant alternatif et 1 500 V en courant continu.
Ces systèmes sont destinés à être montés sur les murs et/ou les plafonds. Ils peuvent être noyés, encastrés, semi-encastrés, montés en saillie ou montés écartés de la surface d’appui avec des dispositifs de fixation.
Le présent document ne s’applique pas aux systèmes de conduits, systèmes de chemins de câbles, systèmes d’échelles à câbles, systèmes de canalisations préfabriquées ou aux équipements couverts par d’autres normes.
Cette deuxième édition annule et remplace la première édition parue en janvier 1996. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- classification;
- construction;
- propriétés mécaniques et électriques.
Cette Norme internationale doit être utilisée conjointement avec l’IEC 61084-1:2017.

General Information

• Status: Published
• Publication Date: 06-Mar-2024
• ICS: 29.060.01 - Electrical wires and cables in general
• ICS: 29.120.10 - Conduits for electrical purposes
• Technical Committee: SC 23A - Cable management systems
• Drafting Committee: MT 5 - TC 23/SC 23A/MT 5
• Current Stage: PPUB - Publication issued
• Start Date: 22-Mar-2017
• Completion Date: 07-Apr-2017

Relations

• Amended By: IEC 61084-2-1:2017/AMD1:2024 - Amendment 1 - Cable trunking systems and cable ducting systems for electrical installations - Part 2-1: Particular requirements - Cable trunking systems and cable ducting systems intended for mounting on walls and ceilings
• Effective Date: 05-Sep-2023

Overview

IEC 61084-2-1:2017 is an international standard developed by the International Electrotechnical Commission (IEC) that defines particular requirements for cable trunking systems (CTS) and cable ducting systems (CDS) intended for mounting on walls and ceilings. This standard focuses on systems used to accommodate and provide electrically protective separation for insulated conductors, cables, and other electrical or communication equipment operating at voltages up to 1,000 V AC and 1,500 V DC.

The scope covers various installation methods including embedded, flush or semi-flush mounting, surface mounting, or mounting away from surfaces using fixing devices. It excludes conduit systems, cable trays, ladder systems, and power track systems, which are covered by other standards. The 2017 edition updates the original 1996 version, introducing technical revisions concerning classification, construction, and mechanical and electrical properties of the systems.

Key Topics

• Classification of Cable Trunking and Ducting Systems: The standard categorizes CTS and CDS into three main types:
  • Type 1: Systems that do not meet criteria of types 2 or 3.
  • Type 2 (Distribution CTS/CDS): Offers functions such as inline junctions, changes of direction (internal, external, flat), "T" junctions, and termination points.
  • Type 3 (Installation CTS/CDS): Provides all functions of Type 2 plus apparatus mounting capability.
• Construction and Design Requirements: The standard sets strict guidelines for dimensions, materials, and build quality to ensure system integrity, safe accommodation of cables and equipment, and compliance with electrical and mechanical properties.
• Mechanical Properties: Testing procedures including impact resistance, linear deflection, cable support under load, and compression tests ensure robustness for wall or ceiling installation environments.
• Electrical Properties and Safety: Requirements cover electrical insulation, protective separation, and electromagnetic compatibility for secure and reliable performance.
• Thermal and Fire Safety: Systems must meet thermal resistance limits and fire hazard assessments to enhance overall installation safety.
• Marking and Documentation: Clear marking for identification and detailed product documentation are mandated to support installation and maintenance operations.

Applications

IEC 61084-2-1:2017 is essential for manufacturers, designers, and installers of cable management systems used in electrical installations within commercial, industrial, and residential buildings. Applications include:

• Organizing and protecting power and communication cables on walls and ceilings.
• Ensuring electrically separated routing to prevent faults or short circuits.
• Facilitating neat, accessible cable runs in installations requiring compliance with international safety and quality standards.
• Providing support solutions where cable trunking or ducting systems must be surface-mounted, flush-mounted, or embedded.

This standard helps ensure cable management systems are reliable, durable, and safe, minimizing the risk of electrical hazards while supporting efficient installation and future maintenance.

Related Standards

• IEC 61084-1:2017: General requirements for cable trunking and ducting systems, which IEC 61084-2-1 supplements with particular requirements for wall and ceiling mounting.
• IEC 60068-2-75:2014: Environmental testing standards including hammer tests for mechanical robustness.
• IEC 60228:2004: Specifies conductors for insulated cables used within cable management systems.
• ISO 535:2023 and ISO 536:2019: Methods for determining paper and board water absorptiveness and grammage, applicable for packaging or labeling elements associated with cable trunking systems.
• Other IEC standards covering conduit systems, cable trays, cable ladders, and power track systems which are excluded from IEC 61084-2-1’s scope.

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Keywords: IEC 61084-2-1, cable trunking systems, cable ducting systems, electrical installations, wall mounting, ceiling mounting, cable management, electrical safety, cable protection, IEC standards, cable ducting classification, electrical separation, mechanical properties, electromagnetic compatibility.

Standards Content (Sample)

IEC 61084-2-1 ®
Edition 2.0 2017-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable trunking systems and cable ducting systems for electrical installations –
Part 2-1: Particular requirements – Cable trunking systems and cable ducting
systems intended for mounting on walls and ceilings

Systèmes de goulottes et systèmes de conduits-profilés pour installations
électriques –
Partie 2-1: Exigences particulières – Systèmes de goulottes et systèmes de
conduits-profilés prévus pour être montés sur les murs et les plafonds
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IEC 61084-2-1 ®
Edition 2.0 2017-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Cable trunking systems and cable ducting systems for electrical installations –

Part 2-1: Particular requirements – Cable trunking systems and cable ducting

systems intended for mounting on walls and ceilings

Systèmes de goulottes et systèmes de conduits-profilés pour installations

électriques –
Partie 2-1: Exigences particulières – Systèmes de goulottes et systèmes de

conduits-profilés prévus pour être montés sur les murs et les plafonds

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.01; 29.120.10 ISBN 978-2-8322-4118-9

– 2 – IEC 61084-2-1:2017 © IEC 2017
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for tests . 6
6 Classification . 6
7 Marking and documentation . 8
8 Dimensions. 8
9 Construction . 8
10 Mechanical properties. 10
11 Electrical properties . 15
12 Thermal properties . 15
13 Fire hazard . 15
14 External influences . 16
15 Electromagnetic compatibility . 16
Annex A (informative) Types of cable trunking systems (CTS) and cable ducting
systems (CDS) . 24
Annex B (normative) CTS/CDS IK code . 25

Figure 101 – Types and application of CTS/CDS for wall or ceiling installation . 16
Figure 102 – Arrangement for cable support test according to 10.2.2 . 17
Figure 103 – Arrangement for cable support test according to 10.2.3 . 17
Figure 104 – Arrangement for cable support test according to 10.2.4 . 18
Figure 105 – Arrangement for cable support test according to 10.2.5 . 18
Figure 106 – Impact test for installation and application – Principles for arrangement . 19
Figure 107 – Impact test for installation and application – Examples for arrangement . 21
Figure 108 – Arrangement for linear deflection test . 22
Figure 109 – Example of arrangement for CDS compression test . 23

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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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) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 61084-2-1 has been prepared by subcommittee 23A: Cable
management systems, of IEC technical committee 23: Electrical accessories.
This second edition cancels and replaces the first edition published in 1996. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• classification;
• construction;
• mechanical and electrical properties.
This International Standard is to be used in conjunction with IEC 61084-1:2017.

– 4 – IEC 61084-2-1:2017 © IEC 2017
The text of this standard is based on the following documents:
FDIS Report on voting
23A/827/FDIS 23A/834/RVD
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part of the IEC 61084 series supplements or modifies the corresponding clauses of
IEC 61084-1:2017 as follows:
– where no particular clause or subclause of IEC 61084-1 is mentioned, the corresponding
clause or subclause of IEC 61084-1 applies as far as is reasonable;
– where “addition” or “replacement” is stated, the relevant text of IEC 61084-1 is to be
adapted accordingly;
– subclauses, figures and tables which are additional to those in IEC 61084-1 are numbered
starting from 101.
A list of all parts in the IEC 61084 series, published under the general title Cable trunking and
cable ducting systems for electrical installations, can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings

1 Scope
This part of the IEC 61084 series specifies requirements and tests for cable trunking systems
(CTS) and cable ducting systems (CDS) intended for the accommodation, and where
necessary for the electrically protective separation, of insulated conductors, cables and
possibly other electrical equipment in electrical and/or communication systems installations.
The maximum voltage of these installations is 1 000 V AC and 1 500 V DC.
These systems are intended for mounting on walls and/or ceilings. They can be embedded,
installed in a flush or semi-flush state, surface mounted or mounted away from the surface
using fixing devices.
This document does not apply to conduit systems, cable tray systems, cable ladder systems,
power track systems or equipment covered by other standards.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
IEC 60068-2-75:2014, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60228:2004, Conductors of insulated cables
IEC 61084-1:2017, Cable trunking systems and cable ducting systems for electrical
installations – Part 1: General requirements
ISO 535:2014, Paper and board – Determination of water absorptiveness – Cobb method
ISO 536:2012, Paper and board – Determination of grammage
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
3.1 Replace Note 1 to entry by:
Note 1 to entry: Different types of CTS are shown in Figure 101 and explained in Annexe A.
3.2 Replace Note 1 to entry by:
Note 1 to entry: Different types of CDS are shown in Figure 101 and explained in Annex A.

– 6 – IEC 61084-2-1:2017 © IEC 2017
Addition:
3.101
type 2 CTS/CDS
distribution CTS/CDS
CTS/CDS which provides at least the following functions:
• in line junction between two trunking lengths or ducting lengths,
• internal and external changes of direction between two trunking lengths or ducting lengths,
• flat change of direction between two trunking lengths or ducting lengths with the exception
of certain systems where such a function is not required e.g. skirting CTS/CDS,
• "T" function between three trunking lengths or ducting lengths with the exception of certain
systems where such a function is not required e.g. bench CTS,
• termination of a trunking length or a ducting length
3.102
type 3 CTS/CDS
installation CTS/CDS
distribution CTS/CDS which provides in addition apparatus mounting function
3.103
type 1 CTS/CDS
CTS/CDS that cannot be defined as a type 2 CTS/CDS or as a type 3 CTS/CDS
3.104
surface mounting CTS/CDS
CTS/CDS intended for mounting on a surface
3.105
flush-mounting CTS/CDS
CTS/CDS intended for mounting flush with the surface so that at least 90 % of the product
depth is recessed below the finished surface when installed according to manufacturer’s
instructions
3.106
semi-flush mounting CTS/CDS
CTS/CDS intended to fit within a mounting surface so that more than 10 % of the product
depth projects from the finished surface
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:

Additional subclauses:
6.101 According to the intended installation positions
NOTE More than one classification can be declared.
6.101.1 CDS embedded in the wall or ceiling
6.101.2 CTS/CDS flush in the wall or ceiling
6.101.2.1 CTS/CDS flush in the wall
6.101.2.2 CTS/CDS flush in the ceiling
6.101.3 CTS/CDS semi-flush or surface-mounted on the wall or ceiling
6.101.3.1 CTS/CDS semi-flush or surface-mounted on the wall
6.101.3.2 CTS/CDS semi-flush or surface-mounted on the ceiling
6.101.3.3 CTS/CDS wall fixed and supported by the floor
6.101.3.4 CTS/CDS wall fixed and supported by a horizontal surface other than the
floor
6.101.4 CTS/CDS mounted away from the wall or ceiling using fixing devices
6.102 According to the prevention of contact between liquids and insulated
conductors and live parts in case of CTS/CDS mounted in a skirting position
and wet-treatment of floor
6.102.1 Not declared
6.102.2 Relying completely on manufacturer’s instructions restricting the
installation position of the CTS/CDS
6.102.3 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS but restricting the position of insulated conductors and live
parts in CTS/CDS
6.102.4 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS and all positions of insulated conductors and live parts in
CTS/CDS
NOTE Installation position refers to the distance between CTS/CDS and the floor.
6.103 According to the type
6.103.1 Type 1 CTS/CDS
6.103.2 Type 2 CTS/CDS (distribution CTS/CDS)
6.103.3 Type 3 CTS/CDS (installation CTS/CDS)
6.104 According to resistance to compression for CDS
6.104.1 CDS for compression 125 N
6.104.2 CDS for compression 320 N
6.104.3 CDS for compression 750 N
6.104.4 CDS for compression 1 250 N
6.104.5 CDS for compression 4 000 N

– 8 – IEC 61084-2-1:2017 © IEC 2017
7 Marking and documentation
This clause of Part 1 is applicable, except as follows:
7.3 Replacement:
7.3 The manufacturer shall provide in his documentation all information necessary for the
proper and safe installation and use. It shall include:
• components of the system;
• function of the system components and their assemblies;
• classification of the system in accordance with Clause 6;
• for type 1 CTS/CDS the list of functions;
• linear impedance, in Ω/m, of trunking length or ducting length of system declared
according to 6.5.1;
• rated voltage of CTS/CDS declared according to 6.6.2;
• usable cross sectional area, in mm , for cables of the CTS/CDS;
NOTE Certain system components when mounted can reduce the usable cross sectional area for cables.
• instructions to reach the declared classification and functions of the system. These
instructions shall include the recommended installation positioning for the CTS/CDS to
ensure that the declared IP classification is maintained after installation.
Compliance is checked by inspection.
8 Dimensions
This clause of Part 1 is applicable, except as follows:
Addition:
There are no dimension requirements.
9 Construction
This clause of Part 1 is applicable, except as follows:
Additional subclauses:
9.101 Assembling
System components shall fit correctly.
Compliance is checked by inspection.
9.102 Contact between liquids and insulated conductors and live parts
CTS/CDS declared according to 6.102.2, 6.102.3 or 6.102.4 shall prevent liquids coming into
contact with insulated conductors and live parts during wet-treatment of floor.

Compliance is checked by inspection and measurement when the area intended to
accommodate insulated conductors is at least 10 mm above the floor due to the following
reasons:
• design, or
• manufacturer’s instructions restricting the installation position of the CTS/CDS, or
• manufacturer’s instructions allowing all installation positions of the CTS/CDS but
restricting the position of insulated conductors and live parts in CTS/CDS.
In all other cases, compliance is checked by the following test carried out on an assembly or
assemblies.
An assembly is made of one or more trunking lengths or ducting lengths with the relevant
system component, if any, to fulfil the various functions of the system and prepared according
to the manufacturer’s instructions. More than one assembly may be necessary to fulfil the
various functions of the system. In each direction, the length L of trunking length or ducting
length coming out of the functional area associated with the function of the system is as long
as the width W of the trunking length or ducting length, or 250 mm, whichever is the greater.
The tolerance of L is ± 25 mm.
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
The assembly is fixed according to manufacturer’s instructions to an appropriate support. The
ends of the assembly are closed according to manufacturer’s instructions.
A (5 ± 1) mm wide strip of absorbent paper is placed on the lowest internal surface of
CTS/CDS intended for the accommodation of insulated conductors. If this lowest internal
surface is horizontal, the strip is placed approximately on the centre line of the surface. The
absorbent paper has a water absorptive height longitudinal of 75 mm per 10 min according to
ISO 535 and a basis weight of 250 g/m according to ISO 536. The length of the strip is such
that it covers the whole length of the assembly.
NOTE 2 When the tested function of the system includes a change of direction, the length of paper can be made
of more than one strip.
Provisions are made such that the absorbent paper makes contact with the lowest internal
surface of CTS/CDS intended for the accommodation of insulated conductors along the whole
length of the assembly. These provisions shall not influence absorption by the paper.
The assembly is carefully placed in a tray containing water to simulate a (10 , 0/-1) mm height
of water on the floor.
NOTE 3 For easy measurement of wet area, coloured water can be used.
After (15 ± 1) s, the assembly is removed from the tray and the exterior of the assembly is
immediately wiped.
After careful removal of the access covers, if any, the absorbent paper is removed. Within
5 min after the removal of the assembly from the tray, the lengths of the wet areas are
measured on the centre line of the strips.
For each tested function, the length of any wet area in the strip of absorbent paper shall be
shorter than 50 mm.
– 10 – IEC 61084-2-1:2017 © IEC 2017
10 Mechanical properties
This clause of Part 1 is applicable, except as follows:
10.2 Cable support test
Replacement:
10.2 Cable support test
10.2.1 General test conditions
Each test is made on one new sample of trunking length or ducting length having a length of
250 mm ± 5 mm.
Trunking length or ducting length having a usable cross sectional area lower than or equal to
500 mm do not need to be tested.
The sample is securely fixed, using 10 mm external diameter flat metallic washers and
metallic screws to a rigid smooth support such as a plywood board 16 mm thick. When 10 mm
external diameter is too large, a suitable smaller washer is used. Fixing(s) are positioned at
(200 ± 5) mm centres along the length of the sample.
Within the width of the sample, the fixing is made as close as possible to each side wall. For
triangular or similar cross section CTS/CDS, the sample is fixed only to the wall.
If the manufacturer's instructions require the use of cable retainers, the test is carried out
using the cable retainers and if possible symmetrically fixed along the length.
The sample is subjected to an evenly distributed load of 1,0 g/mm of the declared usable
area for cables, per metre length. The load is distributed between the compartments
proportionally to the declared usable area. The load consists of copper insulated conductors
or cables complying with class 5, Table 3 of IEC 60228:2004 or flexible insulated conductors
or cables of similar mass per meter.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after 5 min ± 30 s. The measurement apparatus is then calibrated to zero. No pre-load is
necessary for CTS/CDS classified in accordance with 6.101.3.3.
Non-metallic and composite trunking lengths or non-metallic and composite ducting lengths
are tested at the maximum application temperature declared by the manufacturer according to
Table 3 of Part 1 with a tolerance of ± 2 °C.
Insulated conductors or cables of 25 mm nominal cross section are placed in the sample so
that approximately 50 % of the load is achieved. If the dimensions of the compartment do not
2 2
permit the accommodation of 25 mm insulated conductor or cable, 2,5 mm nominal cross
section insulated conductors or cables are used. Insulated conductors or cables of 2,5 mm
nominal cross section are placed on top of the larger cables to achieve the total load within a
tolerance of ± 5 g.
The load is applied for 120 min (+5/0) min. After this period, the deflection is measured at
approximately the middle of the length.

10.2.2 Test for wall fixed CTS/CDS
This test applies to CTS/CDS declared according to 6.101.3.1 and/or 6.101.3.3.
The trunking length or ducting length is mounted as shown in Figure 102, following 10.2.1.
The vertical deflection F is measured as follows:
• for rectangular or similar cross section CTS/CDS, on the lower edge as shown in
Figure 102a;
• for non-rectangular cross section CTS/CDS, as shown in Figure 102b.
The vertical deflection F shall not exceed 10 % of the external horizontal dimension X, with a
maximum of 10 mm. This deflection criteria does not apply to CTS/CDS classified according
to 6.101.3.3.
Access covers of CTS, non-removable cable separators, cable retainers and the like shall
remain adequately fixed so as to fulfil their intended function.
10.2.3 Additional test for wall fixed CTS/CDS with removable separator
This test applies to CTS/CDS provided with removable separator and declared according to
6.101.3.1 and/or 6.101.3.3.
The trunking length or ducting length is mounted as shown in Figure 103, with one separator
inserted in the most unfavourable position, following 10.2.1.
NOTE The most unfavourable position of the separator is generally the lowest intended position.
Access covers of CTS, removable cable separators, cable retainers and the like shall remain
adequately fixed so as to fulfil their intended function.
10.2.4 Test for ceiling fixed CTS/CDS
This test applies to CTS/CDS declared according to 6.101.3.2 and/or 6.101.2.2.
The trunking length or ducting length is mounted as shown in Figure 104, following 10.2.1.
The vertical deflection F is measured as follows:
• for rectangular or similar cross section CTS/CDS, on the lower surface as shown in
Figure 104a,
• for non-rectangular cross section CTS/CDS, as shown in Figure 104b.
The vertical deflection F shall not exceed 10 % of the external horizontal dimension X, with a
maximum of 10 mm.
Access covers of CTS, non-removable cable separators, cable retainers and the like shall
remain adequately fixed so as to fulfil their intended function.

– 12 – IEC 61084-2-1:2017 © IEC 2017
10.2.5 Additional test for ceiling fixed CTS/CDS with removable separator
This test applies to CTS/CDS provided with removable separator and declared according to
6.101.3.2 and/or 6.101.2.2.
The trunking length or ducting length is mounted as shown in Figure 105, with one separator
inserted in the most unfavourable position, following 10.2.1.
NOTE The most unfavourable position of the separator is generally in the middle of the width.
Access covers of CTS, removable cable separators, cable retainers and the like shall remain
adequately fixed so as to fulfil their intended function.
10.3 Impact test
10.3.2 Impact test for installation and application
Additional subclauses:
10.3.2.101 The test is carried out on an assembly made of one or more trunking lengths or
ducting lengths with the relevant system component, if any, to fulfil the various functions of
the system and prepared according to the manufacturer’s instructions. More than one
assembly may be necessary to fulfil the various functions of the system. In each direction, the
length L of trunking length or ducting length coming out of the functional area associated with
the function of the system is as long as the width W of the trunking length or ducting length, or
250 mm, whichever is the greater. The tolerance of L is ± 25 mm.
NOTE Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
The samples are mounted on a rigid smooth support such as a plywood board 16 mm thick,
with a 50 mm minimum spacing between the assembly and the edge of the support.
Other system components can be included to prevent movements. These system components
are the system components to terminate the trunking length or ducting length, if any. When
there is no such system component, a system component chosen by the manufacturer is
used.
Examples for arrangement are shown in Figure 107.
Before the test non-metallic system components and composite components are aged at the
temperature declared according to Table 3 of Part 1 with a tolerance of ± 2 °C for (168 ± 4) h
continuously.
10.3.2.102 The impact test apparatus according to Clause 4 of IEC 60068-2-75:2014 is
mounted on a solid wall or structure providing sufficient support.
The samples are placed in a cabinet at the temperature declared according to Table 2 with a
tolerance of ± 2 °C.
10.3.2.103 After 2 h, each sample is, in turn, removed from the cabinet and immediately
placed in position in the impact test apparatus.

± 2) s after the removal of the sample from the cabinet, the hammer is allowed to fall so
At (12
that an impact is applied as far as possible perpendicular to the accessible region of the
sample likely to be the weakest. Compliance with impact applied before 10 s provides also
compliance with this test of the standard.
NOTE 1 The region likely to be the weakest can be on the relevant system component but can also be on a
trunking length or a ducting length.
No impact is applied to knockouts, membranes and the like.
No impact is applied within 50 mm of any open extremity of the sample.
NOTE 2 When another system component has been included at an extremity of the sample to prevent
movements, this extremity is still considered open.
Instead of placing the samples in a cabinet and applying the impact at (12 ± 2) s after the
removal of the sample from the cabinet, it is allowed to apply the impact in a climatic chamber
at the temperature declared according to Table 2 with a tolerance of ± 2 °C on samples
placed at this temperature at least for 2 h. Compliance in the climatic chamber is sufficient. In
case of failure in the climatic chamber, compliance using the cabinet provides compliance
with the standard.
10.3.2.104 After the test
• the assemblies shall show no cracks or similar damage visible to normal or corrected
vision without magnification and
• the assemblies shall remain intact
such that safety is not impaired.
In case of doubt, the test of 14.1.3 of Part 1 is carried out on the impacted samples to check
that the declared degree of protection against access to hazardous parts is maintained. The
declared degree of protection against access to hazardous parts is either the additional letter
directly declared by the manufacturer according 6.7.3 of Part 1, if any, or the degree of
protection against access to hazardous parts indirectly declared by the manufacturer
according 6.7.1 of Part 1.
NOTE Any cracks in internal dividers which are not likely to impair electrical safety or use are ignored. Electrical
safety can be impaired when the impact creates a sharp edge on a partition which can damage insulated
conductors or cables (see 9.1).
10.4 Linear deflection test
Replacement:
This test is only applicable to CTS/CDS declared according to 6.101.4.
Compliance is checked by the following test.
The test is carried out on a test sample made of one trunking length or ducting length or two
jointed trunking lengths or ducting lengths complying with the following conditions:
• the length of the assembly is the maximum distance between supports (D) according to
the manufacturer’s instructions increased by 200 mm + 100 mm / 0,
• unless otherwise specified in the manufacturer’s instructions, the joint is positioned at mid
span.
– 14 – IEC 61084-2-1:2017 © IEC 2017
The test sample is placed on two parallel supports which are horizontal and level, with a
distance D between the supports. If no supports are part of the CTS/CDS, supports with a
width of (45 ± 5) mm are used.
If no manufacturer's instructions for the orientation of the test sample are provided, the test is
carried out in the most unfavourable orientation.
If no manufacturer's instructions for the fixing to the supports are provided, the test sample is
not fixed to the support.
The test sample is subjected to an evenly distributed load of 1,0 g/mm per metre length of
the declared usable area for cables.
The load consists of copper cables complying with class 5 Table 3 of IEC 60228:2004 or
flexible insulated conductors or cables of similar mass per meter which are placed in the
sample in the following manner as shown in Figure 108.
nominal cross section are placed in the samples so that approximately
Cables of 25 mm
50 % of the load is achieved.
Cables of 2,5 mm nominal cross section are placed on top of the larger cables to achieve the
total load within a tolerance of ± 100 g.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after approximately 5 min. The measurement apparatus is then calibrated to zero.
After 1 h (0/ + 5 min), with the load still applied, the deflection is measured at mid span at the
middle of the lower surface.
The deflection shall not exceed 1 % of the distance between supports.
Access covers of CTS and cable separators shall remain adequately fixed so as to fulfil their
intended function and safety shall not be impaired.
In case of doubt, the test of 14.1.3 of Part 1 is carried out on the test sample with the load still
applied, to check that the declared degree of protection against access to hazardous parts is
maintained. The declared degree of protection against access to hazardous parts is either the
additional letter directly declared by the manufacturer according 6.7.3 of Part 1, if any, or the
degree of protection against access to hazardous parts indirectly declared by the
manufacturer according 6.7.1 of Part 1.
10.6 System access cover retention
Addition after the fourth paragraph:
NOTE Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
Addition after the sixth paragraph:
Examples for arrangement are shown in Figure 107.
Additional subclause:
10.101 Compression test for CDS
CDS shall have adequate resistance to compression to ensure that insulated conductors or
cables can be drawn in.
Compliance is checked by the following test:
The test is carried out on a ducting length (250 ± 5) mm long. The sample is positioned on a
flat and horizontal steel support simulating the mounting surface, in its most unfavourable
stable position allowed by the manufacturer’s instruction.
NOTE In case of doubt over the most unfavourable position, more than one position can be tested.
A steel cube of (50 ± 0,5) mm with an edge radius of approximately 1 mm is placed with one
face horizontal approximately in the middle of the length of the sample and in the most
unfavourable position in the width of the sample. The distance D (Figure 109) between the
horizontal support and the face of the cube in contact with the sample is measured as D1.
An increasing vertical compression force reaching within (30 ± 3) s the value according to
+4
%
6.104 with a tolerance of is applied through the cube. The cube is only allowed to move
in the vertical direction without rotation.
After the force has been applied for (60 ± 2) s, the distance D between the horizontal support
and the face of the cube in contact with the sample is measured as D2 without removing the
force.
The difference between D1 and D2 shall not exceed 25 % of D1.
The force and the cube are removed.
Within (15 ± 1) min after the removal of the cube, it is placed on the sample in its original
horizontal position and the distance D between the horizontal support and the face of the
cube coming into contact with the sample is measured as D3.
The difference between D1 and D3 shall not exceed 10 % of D1.
After the test, the sample shall show no cracks visible to normal or corrected vision without
additional magnification.
11 Electrical properties
This clause of Part 1 is applicable.
12 Thermal properties
This clause of Part 1 is applicable.
13 Fire hazard
This clause of Part 1 is applicable.

– 16 – IEC 61084-2-1:2017 © IEC 2017
14 External influences
This clause of Part 1 is applicable.
15 Electromagnetic compatibility
This clause of Part 1 is applicable.
Addition:
7 8 15
IEC
Key
CTS cover position
NOTE An explanation of the numbers used in this figure is given in Annex A.
Figure 101 – Types and application of CTS/CDS for wall or ceiling installation

X
X
IEC
IEC
Figure 102a – Rectangular or similar Figure 102b – Non rectangular cross section CTS/CDS
cross section CTS/CDS
Key
X external horizontal dimension
F vertical deflection
Figure 102 – Arrangement for cable support test according to 10.2.2
IEC IEC
Figure 103a – Rectangular or similar cross Figure 103b – Non rectangular cross
section CTS/CDS section CTS/CDS
Figure 103 – Arrangement for cable support test according to 10.2.3
F
F
– 18 – IEC 61084-2-1:2017 © IEC 2017
X X
IEC IEC
Figure 104a – Rectangular or Figure 104b – Non rectangular
similar cross section CTS/CDS cross section CTS/CDS

Key
X external horizontal dimension
F vertical deflection
Figure 104 – Arrangement for cable support test according to 10.2.4
IEC
IEC
Figure 105a – Rectangular or similar cross section Figure 105b – Non rectangular cross section
CTS/CDS CTS/CDS
Figure 105 – Arrangement for cable support test according to 10.2.5
F
F
L L
IEC
Figure 106a – Example with fitting

L L
IEC
Figure 106b –Example without fitting

Key
Functional area associated with the function of the system (T derivation in this example)

W width of the trunking length
L maximum between W and 250 mm
Figure 106 – Impact test for installation and application – Principles for arrangement
W
W
L
L
W
W
– 20 – IEC 61084-2-1:2017 © IEC 2017
IEC IEC
With fitting Without fitting
Figure 107a – Arrangement for connection
IEC
IEC
With fitting Without fitting
Figure 107b – Arrangement for internal angle
IEC
IEC
With fitting Without fitting
Figure 107c – Arrangement for external angle
IEC
IEC
With fitting Without fitting
Figure 107d – Arrangement for flat angle

IEC
IEC
With fitting Without fitting
IEC
With fitting
Figure 107e – Arrangement for diversion

IEC
Figure 107f – Arrangement for terminating
IEC
IEC
With apparatus mounting device With trunking length used as
apparatus mounting device
IEC
With apparatus mounting device mounted
at the end of the trunking length
Figure 107g – Arrangement for apparatus mounting
Figure 107 – Impact test for installation and application – Examples for arrangement

----------
...

IEC 61084-2-1 ®
Edition 2.1 2024-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable trunking systems and cable ducting systems for electrical installations –
Part 2-1: Particular requirements – Cable trunking systems and cable ducting
systems intended for mounting on walls and ceilings

Systèmes de goulottes et systèmes de conduits-profilés pour installations
électriques –
Partie 2-1: Exigences particulières – Systèmes de goulottes et systèmes de
conduits-profilés prévus pour être montés sur les murs et les plafonds

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IEC 61084-2-1 ®
Edition 2.1 2024-03
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Cable trunking systems and cable ducting systems for electrical installations –
Part 2-1: Particular requirements – Cable trunking systems and cable ducting
systems intended for mounting on walls and ceilings
Systèmes de goulottes et systèmes de conduits-profilés pour installations
électriques –
Partie 2-1: Exigences particulières – Systèmes de goulottes et systèmes de
conduits-profilés prévus pour être montés sur les murs et les plafonds
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 29.060.01, 29.120.10 ISBN 978-2-8322-8500-8

REDLINE VERSION – 2 – IEC 61084-2-1:2017+AMD1:2024 CSV
© IEC 2024
CONTENTS
FOREWORD . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 General requirements . 6
5 General conditions for tests . 6
6 Classification . 6
7 Marking and documentation . 8
8 Dimensions. 8
9 Construction . 8
10 Mechanical properties. 10
11 Electrical properties . 17
12 Thermal properties . 18
13 Fire hazard . 18
14 External influences . 18
15 Electromagnetic compatibility . 18
Annex A (informative) Types of cable trunking systems (CTS) and cable ducting
systems (CDS) . 26
Annex B (normative) CTS/CDS IK code . 27

Figure 110 – Linear deflection test for multiple span applications . 16
Figure 101 – Types and application of CTS/CDS for wall or ceiling installation . 18
Figure 102 – Arrangement for cable support test according to 10.2.2 . 19
Figure 103 – Arrangement for cable support test according to 10.2.3 . 19
Figure 104 – Arrangement for cable support test according to 10.2.4 . 20
Figure 105 – Arrangement for cable support test according to 10.2.5 . 20
Figure 106 – Impact test for installation and application – Principles for arrangement . 21
Figure 107 – Impact test for installation and application – Examples for arrangement . 23
Figure 108 – Arrangement for linear deflection test . 24
Figure 109 – Example of arrangement for CDS compression test . 25

© IEC 2024
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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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
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9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
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https://patents.iec.ch. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 61084-2-1 edition 2.1 contains the second edition (2017-03) [documents
23A/827/FDIS and 23A/834/RVD] and its amendment 1 (2024-03) [documents
23A/1060/FDIS and 23A/1068/RVD].
In this Redline version, a vertical line in the margin shows where the technical content
is modified by amendment 1. Additions are in green text, deletions are in strikethrough
red text. A separate Final version with all changes accepted is available in this
publication.
REDLINE VERSION – 4 – IEC 61084-2-1:2017+AMD1:2024 CSV
© IEC 2024
International Standard IEC 61084-2-1 has been prepared by subcommittee 23A: Cable
management systems, of IEC technical committee 23: Electrical accessories.
This second edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• classification;
• construction;
• mechanical and electrical properties.
This International Standard is to be used in conjunction with IEC 61084-1:2017.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part of the IEC 61084 series supplements or modifies the corresponding clauses of
IEC 61084-1:2017 as follows:
– where no particular clause or subclause of IEC 61084-1 is mentioned, the corresponding
clause or subclause of IEC 61084-1 applies as far as is reasonable;
– where “addition” or “replacement” is stated, the relevant text of IEC 61084-1 is to be
adapted accordingly;
– subclauses, figures and tables which are additional to those in IEC 61084-1 are numbered
starting from 101.
A list of all parts in the IEC 61084 series, published under the general title Cable trunking and
cable ducting systems for electrical installations, can be found on the IEC website.
The committee has decided that the contents of this document and its amendment 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.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct
understanding of its contents. Users should therefore print this document using a
colour printer.
© IEC 2024
CABLE TRUNKING SYSTEMS AND CABLE DUCTING
SYSTEMS FOR ELECTRICAL INSTALLATIONS –

Part 2-1: Particular requirements – Cable trunking systems and cable
ducting systems intended for mounting on walls and ceilings

1 Scope
This part of the IEC 61084 series specifies requirements and tests for cable trunking systems
(CTS) and cable ducting systems (CDS) intended for the accommodation, and where
necessary for the electrically protective separation, of insulated conductors, cables and
possibly other electrical equipment in electrical and/or communication systems installations.
The maximum voltage of these installations is 1 000 V AC and 1 500 V DC.
These systems are intended for mounting on walls and/or ceilings. They can be embedded,
installed in a flush or semi-flush state, surface mounted or mounted away from the surface
using fixing devices.
This document does not apply to conduit systems, cable tray systems, cable ladder systems,
power track systems or equipment covered by other standards.
2 Normative references
This clause of Part 1 is applicable, except as follows:
Addition:
IEC 60068-2-75:2014, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60228:2004, Conductors of insulated cables
IEC 61084-1:2017, Cable trunking systems and cable ducting systems for electrical
installations – Part 1: General requirements
ISO 535:20142023, Paper and board – Determination of water absorptiveness – Cobb method
ISO 536:20122019, Paper and board – Determination of grammage
3 Terms and definitions
This clause of Part 1 is applicable, except as follows:
3.1 Replace Note 1 to entry by:
Note 1 to entry: Different types of CTS are shown in Figure 101 and explained in Annexe A.
3.2 Replace Note 1 to entry by:
Note 1 to entry: Different types of CDS are shown in Figure 101 and explained in Annex A.

REDLINE VERSION – 6 – IEC 61084-2-1:2017+AMD1:2024 CSV
© IEC 2024
Addition:
3.101
type 2 CTS/CDS
distribution CTS/CDS
CTS/CDS which provides at least the following functions:
• in line junction between two trunking lengths or ducting lengths,
• internal and external changes of direction between two trunking lengths or ducting lengths,
• flat change of direction between two trunking lengths or ducting lengths with the exception
of certain systems where such a function is not required e.g. skirting CTS/CDS,
• "T" function between three trunking lengths or ducting lengths with the exception of certain
systems where such a function is not required e.g. bench CTS,
• termination of a trunking length or a ducting length
3.102
type 3 CTS/CDS
installation CTS/CDS
distribution CTS/CDS which provides in addition apparatus mounting function
3.103
type 1 CTS/CDS
CTS/CDS that cannot be defined as a type 2 CTS/CDS or as a type 3 CTS/CDS
3.104
surface mounting CTS/CDS
CTS/CDS intended for mounting on a surface
3.105
flush-mounting CTS/CDS
CTS/CDS intended for mounting flush with the surface so that at least 90 % of the product
depth is recessed below the finished surface when installed according to manufacturer’s
instructions
3.106
semi-flush mounting CTS/CDS
CTS/CDS intended to fit within a mounting surface so that more than 10 % of the product
depth projects from the finished surface
4 General requirements
This clause of Part 1 is applicable.
5 General conditions for tests
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:

© IEC 2024
Additional subclauses:
6.101 According to the intended installation positions
NOTE More than one classification can be declared.
6.101.1 CDS embedded in the wall or ceiling
6.101.2 CTS/CDS flush in the wall or ceiling
6.101.2.1 CTS/CDS flush in the wall
6.101.2.2 CTS/CDS flush in the ceiling
6.101.3 CTS/CDS semi-flush or surface-mounted on the wall or ceiling
6.101.3.1 CTS/CDS semi-flush or surface-mounted on the wall
6.101.3.2 CTS/CDS semi-flush or surface-mounted on the ceiling
6.101.3.3 CTS/CDS wall fixed and supported by the floor
6.101.3.4 CTS/CDS wall fixed and supported by a horizontal surface other than the
floor
6.101.4 CTS/CDS mounted away from the wall or ceiling using fixing devices
6.101.4.1 CTS/CDS mounted away from the wall or ceiling using fixing devices for
single span applications
6.101.4.2 CTS/CDS mounted away from the wall or ceiling using fixing devices for
multiple span applications
NOTE More than one classification can be declared.
6.102 According to the prevention of contact between liquids and insulated
conductors and live parts in case of CTS/CDS mounted in a skirting position
and wet-treatment of floor
6.102.1 Not declared
6.102.2 Relying completely on manufacturer’s instructions restricting the
installation position of the CTS/CDS
6.102.3 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS but restricting the position of insulated conductors and live
parts in CTS/CDS
6.102.4 Relying on manufacturer’s instructions allowing all installation positions of
the CTS/CDS and all positions of insulated conductors and live parts in
CTS/CDS
NOTE Installation position refers to the distance between CTS/CDS and the floor.
6.103 According to the type
6.103.1 Type 1 CTS/CDS
6.103.2 Type 2 CTS/CDS (distribution CTS/CDS)
6.103.3 Type 3 CTS/CDS (installation CTS/CDS)
6.104 According to resistance to compression for CDS
6.104.1 CDS for compression 125 N

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6.104.2 CDS for compression 320 N
6.104.3 CDS for compression 750 N
6.104.4 CDS for compression 1 250 N
6.104.5 CDS for compression 4 000 N
7 Marking and documentation
This clause of Part 1 is applicable, except as follows:
7.3 Replacement:
7.3 The manufacturer shall provide in his documentation all information necessary for the
proper and safe installation and use. It shall include:
• components of the system;
• function of the system components and their assemblies;
• classification of the system in accordance with Clause 6;
• for type 1 CTS/CDS the list of functions;
• linear impedance, in Ω/m, of trunking length or ducting length of system declared
according to 6.5.1;
• rated voltage of CTS/CDS declared according to 6.6.2;
• usable cross sectional area, in mm , for cables of the CTS/CDS;
NOTE Certain system components when mounted can reduce the usable cross sectional area for cables.
• instructions to reach the declared classification and functions of the system. These
instructions shall include the recommended installation positioning for the CTS/CDS to
ensure that the declared IP classification is maintained after installation.
Compliance is checked by inspection.
8 Dimensions
This clause of Part 1 is applicable, except as follows:
Addition:
There are no dimension requirements.
9 Construction
This clause of Part 1 is applicable, except as follows:
Additional subclauses:
9.101 Assembling
System components shall fit correctly.
Compliance is checked by inspection.

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9.102 Contact between liquids and insulated conductors and live parts
CTS/CDS declared according to 6.102.2, 6.102.3 or 6.102.4 shall prevent liquids coming into
contact with insulated conductors and live parts during wet-treatment of floor.
Compliance is checked by inspection and measurement when the area intended to
accommodate insulated conductors is at least 10 mm above the floor due to the following
reasons:
• design, or
• manufacturer’s instructions restricting the installation position of the CTS/CDS, or
• manufacturer’s instructions allowing all installation positions of the CTS/CDS but
restricting the position of insulated conductors and live parts in CTS/CDS.
In all other cases, compliance is checked by the following test carried out on an assembly or
assemblies.
An assembly is made of one or more trunking lengths or ducting lengths with the relevant
system component, if any, to fulfil the various functions of the system and prepared according
to the manufacturer’s instructions. More than one assembly may be necessary to fulfil the
various functions of the system. In each direction, the length L of trunking length or ducting
length coming out of the functional area associated with the function of the system is as long
as the width W of the trunking length or ducting length, or 250 mm, whichever is the greater.
The tolerance of L is ± 25 mm.
NOTE 1 Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
The assembly is fixed according to manufacturer’s instructions to an appropriate support. The
ends of the assembly are closed according to manufacturer’s instructions.
A (5 ± 1) mm wide strip of absorbent paper is placed on the lowest internal surface of
CTS/CDS intended for the accommodation of insulated conductors. If this lowest internal
surface is horizontal, the strip is placed approximately on the centre line of the surface. The
absorbent paper has a water absorptive height longitudinal of 75 mm per 10 min according to
ISO 535:2023 and a basis weight of 250 g/m according to ISO 536:2019. The length of the
strip is such that it covers the whole length of the assembly.
NOTE 2 When the tested function of the system includes a change of direction, the length of paper can be made
of more than one strip.
Provisions are made such that the absorbent paper makes contact with the lowest internal
surface of CTS/CDS intended for the accommodation of insulated conductors along the whole
length of the assembly. These provisions shall not influence absorption by the paper.
The assembly is carefully placed in a tray containing water to simulate a (10 , 0/-1) mm height
of water on the floor.
NOTE 3 For easy measurement of wet area, coloured water can be used.
After (15 ± 1) s, the assembly is removed from the tray and the exterior of the assembly is
immediately wiped.
After careful removal of the access covers, if any, the absorbent paper is removed. Within
5 min after the removal of the assembly from the tray, the lengths of the wet areas are
measured on the centre line of the strips.
For each tested function, the length of any wet area in the strip of absorbent paper shall be
shorter than 50 mm.
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10 Mechanical properties
This clause of Part 1 is applicable, except as follows:
10.2 Cable support test
Replacement:
10.2 Cable support test
10.2.1 General test conditions
Each test is made on one new sample of trunking length or ducting length having a length of
250 mm ± 5 mm.
Trunking length or ducting length having a usable cross sectional area lower than or equal to
500 mm do not need to be tested.
The sample is securely fixed, using 10 mm external diameter flat metallic washers and
metallic screws to a rigid smooth support such as a plywood board 16 mm thick. When 10 mm
external diameter is too large, a suitable smaller washer is used. Fixing(s) are positioned at
(200 ± 5) mm centres along the length of the sample.
Within the width of the sample, the fixing is made as close as possible to each side wall. For
triangular or similar cross section CTS/CDS, the sample is fixed only to the wall.
If the manufacturer's instructions require the use of cable retainers, the test is carried out
using the cable retainers and if possible symmetrically fixed along the length.
of the declared usable
The sample is subjected to an evenly distributed load of 1,0 g/mm
area for cables, per metre length. The load is distributed between the compartments
proportionally to the declared usable area. The load consists of copper insulated conductors
or cables complying with class 5, Table 3 – class 5 of IEC 60228:2004 or flexible insulated
conductors or cables of similar mass per meter.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after 5 min ± 30 s. The measurement apparatus is then calibrated to zero. No pre-load is
necessary for CTS/CDS classified in accordance with 6.101.3.3.
Non-metallic and composite trunking lengths or non-metallic and composite ducting lengths
are tested at the maximum application temperature declared by the manufacturer according to
Table 3 of Part 1 with a tolerance of ± 2 °C.
Insulated conductors or cables of 25 mm nominal cross section are placed in the sample so
that approximately 50 % of the load is achieved. If the dimensions of the compartment do not
2 2
permit the accommodation of 25 mm insulated conductor or cable, 2,5 mm nominal cross
section insulated conductors or cables are used. Insulated conductors or cables of 2,5 mm
nominal cross section are placed on top of the larger cables to achieve the total load within a
tolerance of ± 5 g.
The load is applied for 120 min (+5/0) min. After this period, the deflection is measured at
approximately the middle of the length.

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10.2.2 Test for wall fixed CTS/CDS
This test applies to CTS/CDS declared according to 6.101.3.1 and/or 6.101.3.3.
The trunking length or ducting length is mounted as shown in Figure 102, following 10.2.1.
The vertical deflection F is measured as follows:
• for rectangular or similar cross section CTS/CDS, on the lower edge as shown in
Figure 102a;
• for non-rectangular cross section CTS/CDS, as shown in Figure 102b.
The vertical deflection F shall not exceed 10 % of the external horizontal dimension X, with a
maximum of 10 mm. This deflection criteria does not apply to CTS/CDS classified according
to 6.101.3.3.
Access covers of CTS, non-removable cable separators, cable retainers and the like shall
remain adequately fixed so as to fulfil their intended function.
10.2.3 Additional test for wall fixed CTS/CDS with removable separator
This test applies to CTS/CDS provided with removable separator and declared according to
6.101.3.1 and/or 6.101.3.3.
The trunking length or ducting length is mounted as shown in Figure 103, with one separator
inserted in the most unfavourable position, following 10.2.1.
NOTE The most unfavourable position of the separator is generally the lowest intended position.
Access covers of CTS, removable cable separators, cable retainers and the like shall remain
adequately fixed so as to fulfil their intended function.
10.2.4 Test for ceiling fixed CTS/CDS
This test applies to CTS/CDS declared according to 6.101.3.2 and/or 6.101.2.2.
The trunking length or ducting length is mounted as shown in Figure 104, following 10.2.1.
The vertical deflection F is measured as follows:
• for rectangular or similar cross section CTS/CDS, on the lower surface as shown in
Figure 104a,
• for non-rectangular cross section CTS/CDS, as shown in Figure 104b.
The vertical deflection F shall not exceed 10 % of the external horizontal dimension X, with a
maximum of 10 mm.
Access covers of CTS, non-removable cable separators, cable retainers and the like shall
remain adequately fixed so as to fulfil their intended function.

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10.2.5 Additional test for ceiling fixed CTS/CDS with removable separator
This test applies to CTS/CDS provided with removable separator and declared according to
6.101.3.2 and/or 6.101.2.2.
The trunking length or ducting length is mounted as shown in Figure 105, with one separator
inserted in the most unfavourable position, following 10.2.1.
NOTE The most unfavourable position of the separator is generally in the middle of the width.
Access covers of CTS, removable cable separators, cable retainers and the like shall remain
adequately fixed so as to fulfil their intended function.
10.3 Impact test
10.3.2 Impact test for installation and application
Additional subclauses:
10.3.2.101 The test is carried out on an assembly made of one or more trunking lengths or
ducting lengths with the relevant system component, if any, to fulfil the various functions of
the system and prepared according to the manufacturer’s instructions. More than one
assembly may be necessary to fulfil the various functions of the system. In each direction, the
length L of trunking length or ducting length coming out of the functional area associated with
the function of the system is as long as the width W of the trunking length or ducting length, or
250 mm, whichever is the greater. The tolerance of L is ± 25 mm.
NOTE Functional area refers, for example, to a fitting, an apparatus mounting device, a junction as shown in
Figure 106.
The samples are mounted on a rigid smooth support such as a plywood board 16 mm thick,
with a 50 mm minimum spacing between the assembly and the edge of the support.
Other system components can be included to prevent movements. These system components
are the system components to terminate the trunking length or ducting length, if any. When
there is no such system component, a system component chosen by the manufacturer is
used.
Examples for arrangement are shown in Figure 107.
Before the test non-metallic system components and composite components are aged at the
temperature declared according to Table 3 of Part 1 with a tolerance of ± 2 °C for (168 ± 4) h
continuously.
10.3.2.102 The impact test apparatus according to Clause 4 of IEC 60068-2-75:2014 is
mounted on a solid wall or structure providing sufficient support.
The samples are placed in a cabinet at the temperature declared according to Table 2 with a
tolerance of ± 2 °C.
10.3.2.103 After 2 h, each sample is, in turn, removed from the cabinet and immediately
placed in position in the impact test apparatus.

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At (12 ± 2) s after the removal of the sample from the cabinet, the hammer is allowed to fall so
that an impact is applied as far as possible perpendicular to the accessible region of the
sample likely to be the weakest. Compliance with impact applied before 10 s provides also
compliance with this test of the standard.
NOTE 1 The region likely to be the weakest can be on the relevant system component but can also be on a
trunking length or a ducting length.
No impact is applied to knockouts, membranes and the like.
No impact is applied within 50 mm of any open extremity of the sample.
NOTE 2 When another system component has been included at an extremity of the sample to prevent
movements, this extremity is still considered open.
Instead of placing the samples in a cabinet and applying the impact at (12 ± 2) s after the
removal of the sample from the cabinet, it is allowed to apply the impact in a climatic chamber
at the temperature declared according to Table 2 with a tolerance of ± 2 °C on samples
placed at this temperature at least for 2 h. Compliance in the climatic chamber is sufficient. In
case of failure in the climatic chamber, compliance using the cabinet provides compliance
with the standard.
10.3.2.104 After the test
• the assemblies shall show no cracks or similar damage visible to normal or corrected
vision without magnification and
• the assemblies shall remain intact
such that safety is not impaired.
In case of doubt, the test of 14.1.3 of Part 1 is carried out on the impacted samples to check
that the declared degree of protection against access to hazardous parts is maintained. The
declared degree of protection against access to hazardous parts is either the additional letter
directly declared by the manufacturer according 6.7.3 of Part 1, if any, or the degree of
protection against access to hazardous parts indirectly declared by the manufacturer
according 6.7.1 of Part 1.
The assembly is opened to check that any internal cracks do not impair electrical safety.
NOTE Any cracks in internal dividers which are not likely to impair electrical safety or use are ignored. Electrical
safety can be impaired when the impact creates a sharp edge on a partition which can damage insulated
conductors or cables (see 9.1).
10.4 Linear deflection test
Replacement:
This test is only applicable to CTS/CDS declared according to 6.101.4.
Compliance is checked by the following test.
The test is carried out on a test sample made of one trunking length or ducting length or two
jointed trunking lengths or ducting lengths complying with the following conditions:
• the length of the assembly is the maximum distance between supports (D) according to
the manufacturer’s instructions increased by 200 mm + 100 mm / 0,
• unless otherwise specified in the manufacturer’s instructions, the joint is positioned at mid
span.
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The test sample is placed on two parallel supports which are horizontal and level, with a
distance D between the supports. If no supports are part of the CTS/CDS, supports with a
width of (45 ± 5) mm are used.
If no manufacturer's instructions for the orientation of the test sample are provided, the test is
carried out in the most unfavourable orientation.
If no manufacturer's instructions for the fixing to the supports are provided, the test sample is
not fixed to the support.
The test sample is subjected to an evenly distributed load of 1,0 g/mm per metre length of
the declared usable area for cables.
The load consists of copper cables complying with class 5 Table 3 of IEC 60228:2004 or
flexible insulated conductors or cables of similar mass per meter which are placed in the
sample in the following manner as shown in Figure 108.
Cables of 25 mm nominal cross section are placed in the samples so that approximately
50 % of the load is achieved.
Cables of 2,5 mm nominal cross section are placed on top of the larger cables to achieve the
total load within a tolerance of ± 100 g.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after approximately 5 min. The measurement apparatus is then calibrated to zero.
After 1 h (0/ + 5 min), with the load still applied, the deflection is measured at mid span at the
middle of the lower surface.
The deflection shall not exceed 1 % of the distance between supports.
Access covers of CTS and cable separators shall remain adequately fixed so as to fulfil their
intended function and safety shall not be impaired.
In case of doubt, the test of 14.1.3 of Part 1 is carried out on the test sample with the load still
applied, to check that the declared degree of protection against access to hazardous parts is
maintained. The declared degree of protection against access to hazardous parts is either the
additional letter directly declared by the manufacturer according 6.7.3 of Part 1, if any, or the
degree of protection against access to hazardous parts indirectly declared by the
manufacturer according 6.7.1 of Part 1.
10.4.1 Linear deflection test for single span applications
This test is applicable to CTS/CDS declared according to 6.101.4.1.
Compliance is checked by the following test.
The test arrangement is prepared with the following conditions:
• the test sample is made of one trunking length or ducting length,
• the length of the test sample is the maximum distance between supports (D) according to
the manufacturer's instructions increased by 200 mm (0 / +100),
• the test sample is placed on two parallel supports which are horizontal and level, with a
distance D between the supports,
• if no supports are part of the CTS/CDS, supports with a width of (45 ± 5) mm are used,

© IEC 2024
• if no manufacturer's instructions for the orientation of the test sample are provided, the
test is carried out in the most unfavourable orientation,
• if no manufacturer's instructions for the fixing to the supports are provided, the test sample
is not fixed to the support.
The test sample is subjected to an evenly distributed load of 1,0 g/mm per metre length of
the declared usable area for cables.
The load consists of copper cables complying with Table 3 – class 5 of IEC 60228:2004 or
flexible insulated conductors or cables of similar mass per meter which are placed in the
sample in the following manner as shown in Figure 108.
Cables of 25 mm nominal cross section are placed in the samples so that approximately
50 % of the load is achieved.
Cables of 2,5 mm nominal cross section are placed on top of the larger cables to achieve the
total load within a tolerance of ±100 g.
To allow for settlement of the sample, a pre-load of 10 % of the load is applied and removed
after approximately 5 min. The measurement apparatus is then calibrated to zero.
After 1 h (0 / +5 min), with the load still applied, the deflection is measured at mid-span at the
middle of the lower surface.
The deflection shall not exceed 1 % of the distance between supports.
Access covers of CTS and cable separators shall remain adequately fixed so as to fulfil their
intended function and safety shall not be impaired.
In case of doubt, the test of IEC 61084-1:2017, 14.1.3 is carried out on the test sample with
the load still applied, to check that the declared degree of protection against access to
hazardous parts is maintained. The declared degree of protection against access to
hazardous parts is either the additional letter directly declared by the manufacturer according
to IEC 61084-1:2017, 6.7.3, if any, or the degree of protection against access to hazardous
parts indirectly declared by the manufacturer according to IEC 61084-1:2017, 6.7.1.
10.4.2 Linear deflection test for multiple span applications
This test is applicable to CTS/CDS declared according to 6.101.4.2.
Compliance is checked by the following test.
The test arrangement is prepared with the following conditions:
• the test assembly is made of two jointed trunking lengths or ducting lengths,
• the total length of the assembly is 1,46 times the maximum distance between supports (D)
according to the manufacturer's instructions increased by 200 mm (0 / +100),
• the assembly is placed on two parallel supports which are horizontal and level, with a
distance D between the supports,
• if no supports are part of the CTS/CDS, supports with a width of (45 ± 5) mm are used,
• the exceeding length of 0,46 times D is placed as a cantilever outside one of the supports
as shown in Figure 110,
• unless otherwise specified in the manufacturer's instructions, the joint is positioned at
mid-span,
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• if no manufacturer's instructions for the orientation of the test sample are provided, the
test is carried out in the most unfavourable orientation,
• if no manufacturer's instructions for the fixing to the supports are provided, the test sample
is not fixed to the support.
The test sample is subjected to an evenly distributed load of 1,0 g/mm per metre length of
the declared usable area for cables.
The load consists of copper cables complying with Table 3 – class 5 of IEC 60228:2004 or
flexible insulated conductors or cables of similar mass pe
...