IEC 60884-2-7:2025
(Main)Plugs and socket-outlets for household and similar purposes - Part 2-7: Particular requirements for cord extension sets
Plugs and socket-outlets for household and similar purposes - Part 2-7: Particular requirements for cord extension sets
IEC 60884-2-7:2025 applies to cord extension sets, rewirable and non-rewirable, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 16 A, intended for household and similar purposes, either indoors or outdoors. This document does not apply to cord extension sets with means for reeling. Cord extension sets intended to be used as socket-outlets for furniture are additionally covered by IEC 60884‑2‑8. This document also applies to cord extension sets which are intended to be used in a cable reel, and which therefore become cable reels with a detachable flexible cable. For the combination of the cord extension set, the reel requirements and tests of IEC 61242 apply in addition.
Cord extension sets are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C.
This second edition cancels and replaces the first edition published in 2011, and Amendment 1:2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) alignment to IEC 60884-1, fourth edition.
Prises de courant pour usages domestiques et analogues - Partie 2-7: Exigences particulières pour les cordons prolongateurs
General Information
Relations
Overview
IEC 60884-2-7:2025 - "Plugs and socket-outlets for household and similar purposes - Part 2-7: Particular requirements for cord extension sets" specifies safety and construction requirements for cord extension sets (rewirable and non-rewirable), with or without earthing, rated >50 V up to 440 V and ≤16 A. It covers sets intended for household and similar use, indoors or outdoors, and includes cord extension sets intended to be used in a cable reel (in which case IEC 61242 requirements also apply). This second edition is a technical revision aligned to IEC 60884‑1 (fourth edition).
Key Topics
This standard supplements IEC 60884‑1 and addresses cord extension set–specific requirements, including:
- Scope and ratings: voltage and current limits, ambient temperature suitability (+40 °C normal; 24 h average ≤ +35 °C; lower limit −5 °C).
- Construction and materials: plugs, portable and fixed socket‑outlets, terminals and terminations, earthing provisions.
- Safety tests and performance: protection against electric shock, insulation resistance, electric strength, temperature rise, resistance to heat, mechanical strength, and resistance to humidity.
- Electrical characteristics: breaking capacity, normal operation, force to withdraw the plug, and connection of flexible cables.
- Marking and classification: required markings, product classification and ratings.
- Special requirements and annexes: EMC/EMF considerations, ageing, switches in portable socket‑outlets, crimped and insulation‑piercing terminals, and low‑temperature service (down to −45 °C) or high‑load applications where applicable.
- Interface with cable reels: cord sets intended for inclusion in a reel must meet IEC 61242 reel requirements in addition to this standard.
Applications
IEC 60884-2-7:2025 is essential for:
- Manufacturers designing and producing cord extension sets for household, garden, or similar domestic applications.
- Product designers and engineers specifying rewirable or non‑rewirable extension leads, with or without earthing.
- Test laboratories and conformity assessment bodies performing type and routine tests referenced in the standard.
- Purchasing, safety and compliance teams ensuring products meet international safety, marking and performance requirements.
- Regulatory authorities and market surveillance bodies evaluating safety for indoor/outdoor cord extension use.
Related Standards
- IEC 60884‑1:2022 - General requirements for plugs and socket‑outlets (reference and alignment).
- IEC 60884‑2‑8 - Socket‑outlets for furniture (when extension sets are used as furniture outlets).
- IEC 61242 - Cable reels for household and similar purposes (applies when cord extension sets form part of a reel).
Keywords: IEC 60884-2-7:2025, cord extension sets, plugs and socket-outlets, household, cable reel, earthing, rewirable, product safety, IEC standards.
Standards Content (Sample)
IEC 60884-2-7 ®
Edition 2.0 2025-02
REDLINE VERSION
INTERNATIONAL
STANDARD
Plugs and socket-outlets for household and similar purposes –
Part 2-7: Particular requirements for cord extension sets
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IEC 60884-2-7 ®
Edition 2.0 2025-02
REDLINE VERSION
INTERNATIONAL
STANDARD
Plugs and socket-outlets for household and similar purposes –
Part 2-7: Particular requirements for cord extension sets
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 29.120.30 ISBN 978-2-8327-0267-3
– 2 – IEC 60884-2-7:2025 RLV © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements . 8
5 General remarks on tests . 9
6 Ratings . 10
7 Classification . 10
8 Marking . 11
9 Checking of dimensions . 11
10 Protection against electric shock . 12
11 Provision for earthing . 12
12 Terminals and terminations . 12
13 Construction of fixed socket-outlets . 12
14 Construction of plugs and portable socket-outlets . 12
15 Interlocked socket-outlets . 15
16 Resistance to ageing, protection provided by the enclosures, and resistance to
humidity . 15
17 Insulation resistance and electric strength . 15
18 Operation of earthing contacts . 15
19 Temperature rise . 15
20 Breaking capacity . 15
21 Normal operation . 15
22 Force necessary to withdraw the plug . 15
23 Flexible cables and their connection . 16
24 Mechanical strength . 16
25 Resistance to heat . 16
26 Screws, current-carrying parts and connections . 16
27 Creepage distances, clearances and distances through sealing compound . 16
28 Resistance of insulating material to abnormal heat, to fire and to tracking . 16
29 Resistance to rusting . 16
30 Additional tests on pins provided with insulating sleeves . 16
31 EMC requirements . 16
32 Electromagnetic fields (EMF) requirements . 16
101 EMC requirements .
Annexes . 18
Annex A (normative) Safety-related routine tests for factory-wired portable
accessories (protection against electric shock and correct polarity) . 18
Annex B (informative) Alternative gripping tests . 19
Annex C (normative) Switches incorporated in portable socket-outlets . 19
Annex D (normative) Requirements for plugs and fixed or portable socket-outlets
intended to be used with AWG cables . 19
Annex E (informative) Tests to be applied during the production of crimped
connections in accessories . 19
Annex F (normative) Additional requirements for accessories provided with insulation-
piercing terminals . 19
Annex G (informative) Additional tests and requirements for accessories intended to
be used in ambient temperatures below −5 °C down to and including −45 °C . 20
Annex I (normative) Additional requirements and tests for plugs and socket-outlets for
high-load (HL) application . 20
Bibliography . 21
Figure 101 – Examples of cord extension sets . 8
Table 101 – Type and length of the flexible cable and nominal cross-sectional area of
the conductors of cord extension sets . 13
– 4 – IEC 60884-2-7:2025 RLV © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD
AND SIMILAR PURPOSES –
Part 2-7: Particular requirements for cord extension sets
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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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
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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.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 60884-2-7:2011+AMD1:2013 CSV. A vertical bar appears
in the margin wherever a change has been made. Additions are in green text, deletions
are in strikethrough red text.
IEC 60884-2-7 has been prepared by subcommittee 23B: Plugs, socket-outlets and switches,
of IEC technical committee 23: Electrical accessories. It is an International Standard.
This second edition cancels and replaces the first edition published in 2011, and
Amendment 1:2013. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment to IEC 60884-1, fourth edition.
The text of this International Standard is based on the following documents:
Draft Report on voting
23B/1548/FDIS 23B/1562/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.
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.
This document is to be used in conjunction with IEC 60884-1:2022.
This document supplements or modifies the corresponding clauses in IEC 60884-1:2022, so as
to convert that publication into the IEC Standard: Particular requirements for cord extension
sets.
Where this document states "addition", "modification" or "replacement", the relevant
requirement, test specifications or explanatory matter in IEC 60884-1:2022 shall be adapted
accordingly.
Subclauses, figures, tables or notes which are additional to those in IEC 60884-1:2022 are
numbered starting from 101.
A list of all the parts in the IEC 60884 series, under the general title Plugs and socket-outlets
for household and similar purposes, 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 webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn, or
• revised.
– 6 – IEC 60884-2-7:2025 RLV © IEC 2025
PLUGS AND SOCKET-OUTLETS FOR HOUSEHOLD
AND SIMILAR PURPOSES –
Part 2-7: Particular requirements for cord extension sets
1 Scope
Replacement:
This part of IEC 60884 applies to cord extension sets, rewirable and non-rewirable, with or
without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a
rated current not exceeding 16 A, intended for household and similar purposes, either indoors
or outdoors.
NOTE 1 In the following countries, cord extension sets only for equipment of class II are not allowed: DE, DK and
UK and CZ.
NOTE 2 In the following country, rewirable cord extension sets are not allowed: ZA.
This document does not apply to cord extension sets with means for reeling.
Cord extension sets intended to be used as socket-outlets for furniture are additionally covered
by IEC 60884-2-8.
This document also applies to cord extension sets which are intended to be used in a cable
reel, and which therefore become cable reels with a detachable flexible cable. For the
combination of the cord extension set, the reel requirements and tests of IEC 61242 have to be
fulfilled apply in addition.
Cord extension sets are suitable for use at ambient temperatures not normally exceeding
+40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a
lower limit of the ambient air temperature of −5 °C.
NOTE 2 In the following country, cord extension sets comprising a socket-outlet for class II equipment are not
permitted; socket-outlets in cord extension sets shall always be Class I as defined in IEC 61140: UK.
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 60884-1:2022, Clause 2 is applicable with the following exceptions:
Addition:
Plugs and socket-outlets for household and similar purposes − Part 1:
IEC 60884-1:20022022,
General requirements
Amendment 1 (2006)
IEC 60884-2-1, Plugs and socket-outlets for household and similar purposes − Part 2-1:
Particular requirements for fused plugs
IEC 60884-2-8:—, Socket-outlets for furniture
IEC 61242, Electrical accessories − Cable reels for household and similar purposes
3 Terms and definitions
For the purposes of this document, the following terms and definitions 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
IEC 60884-1:2022, Clause 3 is applicable except as follows.
Replacement of NOTE 3:
NOTE 3 The term "portable accessory" covers plugs, portable socket-outlets and cord extension sets. Examples of
the use of accessories cord extension sets are shown in Figure 1a) of IEC 60884-1 Figure 101.
Addition of the following figure after Figure 1:
___________
Under preparation. Stage at the time of publication: IEC CDV 60884-2-8:2024.
– 8 – IEC 60884-2-7:2025 RLV © IEC 2025
a) Example of cord extension set
b) Example of cord extension set with multiple socket-outlets
Figure 101 – Examples of cord extension sets
3.12
cord extension set
Addition:
NOTE 101 The term “plug” covers plugs and fused plugs. The term “socket-outlet” covers also socket-outlet with
incorporated components such as switches and fuses etc. (see also 14.22).
Addition:
3.12.101
rewirable cord extension set
cord extension set so constructed that any of the accessories or the flexible cable can be
replaced with the aid of a general purpose tool
3.12.102
non-rewirable cord extension set
cord extension set so constructed that it forms a complete unit with the flexible cable, the plug
and the socket-outlet after connection and assembly by the manufacturer, the disassembly of
which makes it permanently unfit for any further use
4 General requirements
IEC 60884-1:2022, Clause 4 is applicable except as follows:
Addition of the following paragraph at the end of the clause:
Components such as plugs, socket-outlets (including multiple socket-outlets) and flexible
cables of the cord extension sets shall be fully compliant with, and have been verified against,
the relevant product standards for those components.
Cord extension sets intended to be used as socket-outlets for furniture shall in addition comply
with IEC 60884-2-8.
5 General remarks on tests
Replacement:
5.1 General
Tests shall be carried out to prove compliance with the requirements laid down in this document.
No extra requirements for components (plugs, socket outlets and flexible cables) have to be
applied and the relevant tests shall not be repeated.
Tests are carried out as follows:
– type tests shall be carried out on representative specimens of each assembly;
– routine tests shall be carried out on each assembly manufactured according to this
document.
Subclauses 5.2 to 5.5 are applicable to type tests and 5.6 to routine tests.
NOTE In the following country, the following tests are carried out on samples of the cord extension set in accordance
with the sampling requirements specified in Clauses 5, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 28, 29 and 30: ZA.
5.2 Products arrangement during test
The specimens are tested as delivered and under normal conditions of use.
5.3 Ambient test condition
Unless otherwise specified, the tests are carried out in the order of the clauses, at an ambient
temperature between 15 °C and 35 °C.
In case of doubt, the tests are carried out at an ambient temperature of (20 ± 5) °C.
5.4 Additional samples
Three specimens are subjected to all the relevant tests.
5.5 Compliance general requirement
The specimens are submitted to all the relevant tests and the requirements are satisfied if all
the tests are met.
If one specimen does not satisfy a test due to a process fault in the manufacturing of cord
extension sets, that test and any preceding one which may have influenced the results of the
test shall be repeated, and also the tests which follow shall be made in the required sequence
on another full set of specimens, all of which shall comply with the requirements.
NOTE The applicant may can submit, together with a number of specimens specified in 5.4, the additional set of
specimens which may can be required, should one specimen fail. The testing station will then, without further request,
– 10 – IEC 60884-2-7:2025 RLV © IEC 2025
test the additional specimens and will only reject them if a further failure occurs. If the additional set of specimens is
not submitted at the same time, the failure of one specimen will entail rejection.
5.6 Routine tests
Routine tests are specified in Annex A.
6 Ratings
IEC 60884-1:2022, Clause 6 is applicable except as follows.
Replacement:
6.2 The rated current of the cord extension set shall be the lowest value from
a) the rated current of the plug; or
b) the arithmetic sum of the highest rated currents of all plugs which can be inserted into
the cord extension set; or
c) the rated current of the overcurrent protective device having the smallest rated current.
The rated voltage of the cord extension set is that of the plug.
Compliance is checked by inspection of the marking.
Addition:
6.101 Rated voltage
The rated voltage of the cord extension set is that of the plug.
Compliance is checked by inspection of the marking. In addition, the requirements of 14.103
shall be fulfilled.
6.102 Rated current
The rated current shall be the lowest value of the following:
– the rated current of the plug; or
– the arithmetic sum of the highest rated currents of all plugs which can be simultaneously
inserted into the cord extension set; or
– the rated current of the incorporated overcurrent protective device having the smallest rated
current, if any.
Compliance is checked by inspection of the marking. In addition, the requirements of 14.104
shall be fulfilled.
6.103 Power
The power of cord extension sets, when applicable, shall be calculated by multiplying the rated
current (as determined in 6.102) and the nominal voltage of the supply system to which it can
be connected, with a power factor equal to 1.
NOTE 101 Nominal voltages are defined in IEC 60038.
Compliance is checked by inspection of the marking.
7 Classification
IEC 60884-1:2022, Clause 7 is not applicable except for 7.1.1, 7.1.2, and 7.1.3 and 7.1.4.
Replace 7.1.4 of IEC 60884-1:2022 with the following:
7.1.4 Classification according to the method of connecting the cable:
7.1.4.1 rewirable cord extension set;
7.1.4.2 non-rewirable cord extension set.
8 Marking
IEC 60884-1:2022, Clause 8 is applicable except as follows.
8.1 General
Delete the first three dashed texts list items.
Add the following paragraphs after the seventh dashed text list item:
For cord extension sets, the marking of the manufacturer's or responsible vendor's name,
trademark or identification mark shall be applied only if the manufacturer of the cord extension
set is different from the manufacturer of the socket-outlet.
NOTE 101 The marking of the name, trade mark or identification mark of the manufacturer or responsible vendor
may can for example be applied on a sleeve or label provided around the cord.
For a cord extension set, the type reference, which may be a catalogue number, shall be placed
on the smallest packaging unit or on the product.
Addition at the end of Subclause 8.1:
– in the case of multiple portable socket-outlets or when there is an overcurrent protective
device, the power in watts.
Addition at the end:
The marking for power shall be completed by the word MAX. This marking shall be durable and
easily legible with normal or corrected vision, without additional magnification.
The power is calculated using the nominal supply voltage of the fixed electrical installation to
which it can be connected, the rated current in volts amperes and a power factor cos φ = 1.
NOTE 102 These markings may be shown as in the following examples:
NOTE 102 As an example, a 250 V / 16 A cord extension set has nominal supply voltage of 230 V and the
corresponding marking would be:
MAX 2000 3680 W or 2000 3680 W MAX
The maximum admissible power marking shall not be hidden by any inserted plug.
9 Checking of dimensions
IEC 60884-1:2022, Clause 9 is not applicable, see Clause 4.
– 12 – IEC 60884-2-7:2025 RLV © IEC 2025
10 Protection against electric shock
IEC 60884-1:2022, Clause 10 is not applicable, see Clause 4.
Replacement of the text of Clause 10:
10.1 Cord extension sets shall be so designed and constructed that after they are wired and
assembled as for normal use, live parts are not accessible, even after removal of parts which
can be removed without the use of a tool.
Compliance is checked by inspection and, if necessary, by the following test.
The standard test finger, test probe B of IEC 61032, is applied in every possible position, an
electrical indicator with a voltage between 40 V and 50 V being used to show contact with the
relevant parts.
Replacement:
10.210.101 Accessibility of live parts during normal use
Cord extension sets shall be so designed and constructed that after they are wired and
assembled as for normal use, live parts are not accessible, even after removal of parts which
can be removed without the use of a tool.
Compliance is checked by inspection and by applying with a test wire of 1,0 mm diameter (see
Figure 10 8 of IEC 60884-1:2022) a force of 1 N where the cable enters the plug and the
portable socket-outlet in every possible position.
During this test, it shall not be possible to touch live parts with the gauge.
An electrical indicator with a voltage between 40 V and 50 V shall be used to ensure that there
is no electrical contact with the relevant parts.
11 Provision for earthing
IEC 60884-1:2022, Clause 11 is not applicable, see Clause 4.
12 Terminals and terminations
IEC 60884-1:2022, Clause 12 is not applicable, see Clause 4.
13 Construction of fixed socket-outlets
IEC 60884-1:2022, Clause 13 is not applicable.
14 Construction of plugs and portable socket-outlets
Replacement of the title of Clause 14:
14 Construction of cord extension sets
IEC 60884-1:2022, Clause 14 is applicable except as follows:
Addition:
14.1101 Additional requirements for cord extension sets:
Socket-outlets to be used in cord extension sets shall have shutters.
NOTE 1 In the following countries, socket-outlets to be used in cord extension sets are not required to have
shutters: AU, AT, CA, CH, SG, JP, US, DE.
NOTE 2 In the following country, the standards sheets for the portable socket-outlets specify the requirements for
shutters: DK.
Plugs and socket-outlets shall comply with the relevant part of the IEC 60884-1 series.
Fused plugs shall comply with IEC 60884-2-1.
NOTE 3 In the following country, BS 1363 applies to plugs and socket-outlets: UK.
Supply flexible cables shall comply with the IEC 60227 series (for polyvinyl chloride insulated
cables) or the IEC 60245 series (for rubber insulated cables).
NOTE 4 In the following country BS 1363 applies to fused plugs: UK.
The flexible cable shall have the same number of conductors as the poles in the socket-
outlet(s). Earthing contacts, if any, are considered as one pole.
Each pole in the socket-outlet shall be connected to the corresponding pole of the plug.
NOTE 5 4 In the following country, flexible cords to BS6500 or BS7919 are also permitted: UK.
Where an earthing contact is provided in the socket-outlet it shall be connected to the
corresponding earthing contact of the plug.
Compliance is checked by inspection.
14.2102 Flexible cable
The type and length of the flexible cable and nominal cross-sectional area of the conductors of
cord extension sets shall comply with Table 101.
Table 101 – Type and length of the flexible cable and nominal
cross-sectional area of the conductors of cord extension sets
Minimum nominal cross-
Maximum length of the
Rated current Lightest type of flexible cable sectional area of the
flexible cable
conductors
A m
mm
2,5 60227 IEC 52 0,50 3
60227 IEC 52 0,75
6 5
60227 IEC 53 1,00
0,75 5
c
60227 IEC 53 or 60245 IEC 53
1,00 30
1,00 5
13 60227 IEC 53 or 60245 IEC 53
a
1,50
b
1,00
c
16 60227 IEC 53 or 60245 IEC 53
1,50 30
– 14 – IEC 60884-2-7:2025 RLV © IEC 2025
a 2
In the following countries the minimum nominal cross-sectional area is 1,25 mm : UK and SG.
b
In the following countries, for cord extension sets with socket-outlet of class I, the minimum nominal cross-
sectional area is 1,5 mm : DE, FI.
c 2
In the following country, the minimum nominal cross-sectional area for rated current 10 A is 1.0 mm , and for
rated current 16 A is 1,5 mm : CN.
NOTE 1 In the following countries, cord extension sets having a rated current of 6 A and 13 A are not allowed: CH,
DE, FI, IT and NO.
NOTE 2 In the following countries, cord extension sets intended for outdoor use should be provided with cable type
60245 IEC 53 or equivalent: FI, NO, SA and SE.
2 2
NOTE 3 In the following country, the nominal cross-sectional area is 1,5 mm for 5 m maximum length and 2,5 mm
for 30 m maximum length: SA.
2 2
NOTE 4 In the following country, the minimum cross-sectional area is 1 mm for 5 m maximum length and 1,5 mm
for 30 m maximum length: CH.
NOTE 5 In the following country, cord extension sets rated 10 A shall have an incorporated protection: NO.
The length of the cable is measured between the operating faces of the plug and the socket-
outlet. In the case of multiple socket-outlets the measurement is taken to the socket-outlet
closest to the plug.
Compliance is checked by inspection and measurement.
14.3103 Rated voltage of cord extension set components
The rated voltage of the plug and the socket-outlet shall be the same. The rated voltage of the
cable shall not be less than the rated voltage of the plug and socket-outlet.
Compliance is checked by inspection.
14.104 Plug rating in a cord extension set
The rated current of the plug shall not be lower than the rated current of the socket-outlet.
In a cord extension set protected against overload (e.g. having a fused plug or a protective
overcurrent device), the rated current of the plug shall not be lower than the rated current of
the protective overcurrent device.
For a cord extension set with a multiple portable socket-outlet and not incorporating a protective
overcurrent device, the rated current of the plug shall be at least the arithmetic sum of the
highest rated currents of all plugs which can be inserted into the cord extension set or the same
as the rated current of the relevant socket-outlet of the fixed wiring the plug is intended to be
connected to, whichever is the lower.
NOTE 1 In the following country the following part of the last paragraph “rated current of the relevant socket-outlet
of the fixed wiring” is shall not applicable be considered as it is possible to insert a 10 A, 13 A or 16 A plug into a
10 A, 13 A or 16 A socket-outlet: DK.
NOTE 2 In the following country, cord extension sets comprising 3 or more socket-outlets shall be fitted with an
overcurrent protective device: ZA.
Compliance is checked by inspection.
14.4 The rated voltage of the plug and the socket-outlet shall be the same. The rated voltage
of the cable shall not be less than the rated voltage of the plug and socket-outlet.
Compliance is checked by inspection.
14.105 Appearance of cord extension sets
Cord extension sets shall not have an enclosure that is shaped or decorated like a toy.
NOTE Examples of such enclosures are those representing animals, characters, persons or scale models.
Compliance is checked by inspection.
15 Interlocked socket-outlets
IEC 60884-1:2022, Clause 15 is not applicable.
16 Resistance to ageing, protection provided by the enclosures, and resistance
to humidity
Replacement:
The protection degree of the cord extension set is the same as the lowest protection degree of
the plug and the portable socket-outlet.
Compliance is checked by inspection.
17 Insulation resistance and electric strength
IEC 60884-1:2022, Clause 17 is not applicable, see Clause 4.
18 Operation of earthing contacts
IEC 60884-1:2022, Clause 18 is not applicable, see Clause 4.
19 Temperature rise
IEC 60884-1:2022, Clause 19 is not applicable, see Clause 4.
NOTE In the following country overcurrent protection is electrically shorted out with a link of negligible resistance
for the execution of the temperature rise test: ZA.
20 Breaking capacity
IEC 60884-1:2022, Clause 20 is not applicable, see Clause 4.
21 Normal operation
IEC 60884-1:2022, Clause 21 is not applicable, see Clause 4.
22 Force necessary to withdraw the plug
IEC 60884-1:2022, Clause 22 is not applicable, see Clause 4.
– 16 – IEC 60884-2-7:2025 RLV © IEC 2025
23 Flexible cables and their connection
IEC 60884-1:2022, Clause 23 is not applicable, see Clause 4.
24 Mechanical strength
IEC 60884-1:2022, Clause 24 is not applicable, see Clause 4.
25 Resistance to heat
IEC 60884-1:2022, Clause 25 is not applicable, see Clause 4.
26 Screws, current-carrying parts and connections
IEC 60884-1:2022, Clause 26 is not applicable, see Clause 4.
27 Creepage distances, clearances and distances through sealing compound
IEC 60884-1:2022, Clause 27 is not applicable, see Clause 4.
28 Resistance of insulating material to abnormal heat, to fire and to tracking
IEC 60884-1:2022, Clause 28 is not applicable, see Clause 4.
29 Resistance to rusting
IEC 60884-1:2022, Clause 29 is not applicable, see Clause 4.
30 Additional tests on pins provided with insulating sleeves
IEC 60884-1:2022, Clause 30 is not applicable, see Clause 4.
31 EMC requirements
IEC 60884-1:2022, Clause 31 is applicable.
32 Electromagnetic fields (EMF) requirements
IEC 60884-1:2022, Clause 32 is applicable.
Addition:
101 EMC requirements
101.1 Immunity
The operation of cord extension sets within the scope of this standard, in normal use, is not
affected by electromagnetic disturbances.
101.2 Emission
Cord extension sets within the scope of this standard are intended for continuous use; in normal
use they do not generate electromagnetic disturbances.
– 18 – IEC 60884-2-7:2025 RLV © IEC 2025
Annexes
The annexes of IEC 60884-1:2022 are applicable except as follows:
Annex A
(normative)
Safety-related routine tests for factory-wired portable accessories
(protection against electric shock and correct polarity)
IEC 60884-1:2022, Annex A is applicable with the following modifications:
A.1 General remarks
Replacement of the first paragraph:
All factory-wired cord extension sets shall be subjected to the following tests, as appropriate. A
diagrammatic representation is shown in Table A.1.
A.2 Polarized systems, phase (L) and neutral (N) – Correct connection
Modification of the second dashed text in NOTE 1 list item:
– for cord extension sets, between the L and N pin of plug at one end of the cable and the last
corresponding L and N contact of the portable socket-outlet at the other end of the cable. In
case of doubt all the connections shall be verified.
A.3 Earth continuity
Modification of the second dashed text in NOTE 1 list item:
– for cord extension sets, between the corresponding earth pin or earthing contact of the plug
and the last earthing contact or pin of the portable socket-outlet at the other end of the
cable. In case of doubt all the connections shall be verified.
A.4 Short-circuit/wrong connection and reduction of creepage distance and
clearances between phase (L) or neutral (N) to earth ( )
Delete Table A.1.
Annex B
(informative)
Alternative gripping tests
IEC 60884-1:2022, Annex B is not applicable.
Annex C
(normative)
Switches incorporated in portable socket-outlets
IEC 60884-1:2022, Annex C is not applicable.
Annex D
(normative)
Requirements for plugs and fixed or portable socket-outlets
intended to be used with AWG cables
IEC 60884-1:2022, Annex D is not applicable.
Annex E
(informative)
Tests to be applied during the production of crimped
connections in accessories
IEC 60884-1:2022, Annex E is not applicable.
Annex F
(normative)
Additional requirements for accessories provided
with insulation-piercing terminals
IEC 60884-1:2022, Annex F is not applicable.
– 20 – IEC 60884-2-7:2025 RLV © IEC 2025
Annex G
(informative)
Additional tests and requirements for accessories intended to be used in
ambient temperatures below −5 °C down to and including −45 °C
IEC 60884-1:2022, Annex G is applicable with the following addition:
G.4.101 Requirements for flexible cables
Flexible cables used in cord extension sets intended to be used in ambient temperatures below
−5 °C down to and including −45 °C shall be suitable for use at the declared cold temperatures.
Compliance is checked by inspection.
Annex I
(normative)
Additional requirements and tests for plugs and socket-outlets
for high-load (HL) application
IEC 60884-1:2022, Annex I is not applicable.
Bibliography
IEC 60884-2-1, Plugs and socket-outlets for household and similar purposes – Part 2-1:
Particular requirements for fused plugs
IEC 61242, Electrical accessories – Cable reels for household and similar purposes
___________
IEC 60884-2-7 ®
Edition 2.0 2025-02
INTERNATIONAL
STANDARD
Plugs and socket-outlets for household and similar purposes –
Part 2-7: Particular requirements for cord extension sets
– 2 – IEC 60884-2-7:2025 © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements . 8
5 General remarks on tests . 8
6 Ratings . 9
7 Classification . 10
8 Marking . 10
9 Checking of dimensions . 10
10 Protection against electric shock . 11
11 Provision for earthing . 11
12 Terminals and terminations . 11
13 Construction of fixed socket-outlets . 11
14 Construction of plugs and portable socket-outlets . 11
15 Interlocked socket-outlets . 13
16 Resistance to ageing, protection provided by the enclosures, and resistance to
humidity . 13
17 Insulation resistance and electric strength . 14
18 Operation of earthing contacts . 14
19 Temperature rise . 14
20 Breaking capacity . 14
21 Normal operation . 14
22 Force necessary to withdraw the plug . 14
23 Flexible cables and their connection . 14
24 Mechanical strength .
...
Frequently Asked Questions
IEC 60884-2-7:2025 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Plugs and socket-outlets for household and similar purposes - Part 2-7: Particular requirements for cord extension sets". This standard covers: IEC 60884-2-7:2025 applies to cord extension sets, rewirable and non-rewirable, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 16 A, intended for household and similar purposes, either indoors or outdoors. This document does not apply to cord extension sets with means for reeling. Cord extension sets intended to be used as socket-outlets for furniture are additionally covered by IEC 60884‑2‑8. This document also applies to cord extension sets which are intended to be used in a cable reel, and which therefore become cable reels with a detachable flexible cable. For the combination of the cord extension set, the reel requirements and tests of IEC 61242 apply in addition. Cord extension sets are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C. This second edition cancels and replaces the first edition published in 2011, and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment to IEC 60884-1, fourth edition.
IEC 60884-2-7:2025 applies to cord extension sets, rewirable and non-rewirable, with or without earthing contact, with a rated voltage greater than 50 V but not exceeding 440 V and a rated current not exceeding 16 A, intended for household and similar purposes, either indoors or outdoors. This document does not apply to cord extension sets with means for reeling. Cord extension sets intended to be used as socket-outlets for furniture are additionally covered by IEC 60884‑2‑8. This document also applies to cord extension sets which are intended to be used in a cable reel, and which therefore become cable reels with a detachable flexible cable. For the combination of the cord extension set, the reel requirements and tests of IEC 61242 apply in addition. Cord extension sets are suitable for use at ambient temperatures not normally exceeding +40 °C, but their average temperature over a period of 24 h does not exceed +35 °C, with a lower limit of the ambient air temperature of −5 °C. This second edition cancels and replaces the first edition published in 2011, and Amendment 1:2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) alignment to IEC 60884-1, fourth edition.
IEC 60884-2-7:2025 is classified under the following ICS (International Classification for Standards) categories: 29.120.30 - Plugs, socket-outlets, couplers. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60884-2-7:2025 has the following relationships with other standards: It is inter standard links to IEC 60884-2-7:2011, IEC 60884-2-7:2011/AMD1:2013, IEC 60884-2-7:2011/AMD1:2013/COR1:2014. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 60884-2-7:2025 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
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