IEC 60884-2-7:2025

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
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
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Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
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 .
...

IEC 60884-2-7 ®
Edition 2.0 2025-02
EXTENDED VERSION
INTERNATIONAL
STANDARD
This full version of IEC 60884-2-7:2025 includes the content of the references made to
IEC 60884-1:2022
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
EXTENDED VERSION
INTERNATIONAL
STANDARD
This full version of IEC 60884-2-7:2025 includes the content of the references made to
IEC 60884-1:2022
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 978-2-8327-0268-0

– 2 – IEC 60884-2-7:2025 EXV © IEC 2025
CONTENTS
FOREWORD . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 7
4 General requirements . 16
5 General remarks on tests . 16
6 Ratings . 17
7 Classification . 18
8 Marking . 19
9 Checking of dimensions . 23
10 Protection against electric shock . 23
11 Provision for earthing . 23
12 Terminals and terminations . 23
13 Construction of fixed socket-outlets . 23
14 Construction of cord extension sets.-. . 23
15 Interlocked socket-outlets . 34
16 Resistance to ageing, protection provided by enclosures, and resistance to
humidity . 34
17 Insulation resistance and electric strength . 34
18 Operation of earthing contacts . 34
19 Temperature rise . 34
20 Breaking capacity . 34
21 Normal operation . 34
22 Force necessary to withdraw the plug . 34
23 Flexible cables and their connection . 34
24 Mechanical strength . 34
25 Resistance to heat . 34
26 Screws, current-carrying parts and connections . 35
27 Creepage distances, clearances and distances through sealing compound . 35
28 Resistance of insulating material to abnormal heat, to fire and to tracking . 35
29 Resistance to rusting . 35
30 Additional tests on pins provided with insulating sleeves . 35
31 EMC requirements . 35
32 Electromagnetic fields (EMF) requirements . 35
Annex A (normative) Safety-related routine tests for factory-wired portable
accessories (protection against electric shock and correct polarity) . 36
Annex B (informative) Alternative gripping tests . 38
Annex C (normative) Switches incorporated in portable socket-outlets . 39
Annex D (normative) Requirements for plugs and fixed or portable socket-outlets
intended to be used with AWG cables . 40
Annex E (informative) Tests to be applied during the production of crimped
connections in accessories . 41

Annex F (normative) Additional requirements for accessories provided with insulation-
piercing terminals . 42
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 . 43
Annex H (informative) Additional tests and requirements for accessories intended to
be used in ambient temperatures above +40 °C up to and including +70 °C . 48
Annex I (normative) Additional requirements and tests for plugs and socket-outlets for
high-load (HL) application . 51
Bibliography . 52

Figure 1 – Examples of accessories . 8
Figure 101 – Examples of cord extension sets . 9
Figure 2 – Example of thread-forming screw . 12
Figure 3 – Example of thread-cutting screw . 12
Figure 4 – Examples of membranes and grommets . 14
Figure 5 – Test piston dimensions. 22
Figure 17 – Device for testing pins which are not solid . 24
Figure H.1 – Schematic drawing of a de-rating curve with an example of a de-rated
current I at the operating ambient temperature t . 49
d d
Table 2 – Preferred combinations of types and ratings . 17
Table 101 – Type and length of the flexible cable and nominal cross-sectional area of
the conductors of cord extension sets . 32
Table A.1 – Deleted . 37
Table G.1 – Energy for impact tests . 46

– 4 – IEC 60884-2-7:2025 EXV © IEC 2025

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Part 2-7: Particular requirements for cord extension sets

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
This extended version (EXV) of the official IEC Standard provides the user with the full
content of the Standard.
to IEC 60884-1:2022.
The specific content of IEC 60884-2-7:2025 is displayed on a blue background.

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 EXV © IEC 2025

PLUGS AND SOCKET-OUTLETS FOR
HOUSEHOLD AND SIMILAR PURPOSES –

Part 2-7: Particular requirements for cord extension sets

1 Scope
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.
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.
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 60068-2-30, Environmental testing – Part 2-30: Tests – Test Db: Damp heat, cyclic
(12 + 12 h cycle)
IEC 60068-2-31, Environmental testing – Part 2-31: Tests – Test Ec: Rough handling shocks,
primarily for equipment-type specimens
IEC 60068-2-75, Environmental testing – Part 2-75: Tests – Test Eh: Hammer tests
IEC 60112, Method for the determination of the proof and the comparative tracking indices of
solid insulating materials
IEC 60227 (all parts), Polyvinyl chloride insulated cables of rated voltages up to and including
450/750 V
IEC 60245 (all parts), Rubber insulated cables – Rated voltages up to and including 450/750 V

IEC 60417, Graphical symbols for use on equipment (available at http://www.graphical-
symbols.info/equipment)
IEC 60423:2007, Conduit systems for cable management – Outside diameters of conduits for
electrical installations and threads for conduits and fittings
IEC 60529:1989, Degrees of protection provided by enclosures (IP Code)
IEC 60529:1989/AMD1:1999
IEC 60529:1989/AMD2:2013
IEC 60669 (all parts), Switches for household and similar fixed-electrical installations
IEC 60669-2-1:2021, Switches for household and similar fixed electrical installations – Part 2-1:
Particular requirements – Electronic control devices
IEC 60695-2-10:2021, Fire hazard testing – Part 2-10: Glowing/hot-wire based test methods –
Glow-wire apparatus and common test procedure
IEC 60695-2-11:2021, Fire hazard testing – Part 2-11: Glowing/hot-wire based test methods –
Glow-wire flammability test method for end products (GWEPT)
IEC 60884-1:2022, Plugs and socket-outlets for household and similar purposes − Part 1:
General requirements
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 61032:1997, Protection of persons and equipment by enclosures – Probes for verification
IEC 61058 (all parts), Switches for appliances
IEC 61545, Connecting devices – Devices for the connection of aluminium conductors in
clamping units of any material and copper conductors in aluminium bodied clamping units
ISO/IEC Guide 51, Safety aspects – Guidelines for their inclusion in standards
ISO 1456:2009, Metallic and other inorganic coatings – Electrodeposited coatings of nickel,
nickel plus chromium, copper plus nickel and of copper plus nickel plus chromium
ISO 2081:2018, Metallic and other inorganic coatings – Electroplated coatings of zinc with
supplementary treatments on iron or steel
ISO 2093:1986, Electroplated coatings of tin – Specification and test methods
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

Under preparation. Stage at the time of publication: IEC CDV 60884-2-8:2024.

– 8 – IEC 60884-2-7:2025 EXV © IEC 2025

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
NOTE 1 Where the terms "voltage" and "current" are used, they imply RMS values, unless otherwise specified.
NOTE 2 Throughout this document the word "earthing" is used for "protective earthing" unless otherwise stated.
NOTE 3 The term "portable accessory" covers plugs, portable socket-outlets and cord extension sets. Examples of
cord extension sets are shown in Figure 101.
NOTE 4 Throughout this document the term "socket-outlet" covers both fixed and portable socket-outlets, except
where the reference is specific to one type or the other.

a) Diagram showing various accessories and their use
NOTE Appliance, appliance inlet and appliance coupler are used in this figure only for illustration purposes and
they are not covered by this document.

b) Example of a multiple socket-outlet
Figure 1 – Examples of accessories

a) Example of cord extension set

b) Example of cord extension set with multiple socket-outlets

Figure 101 – Examples of cord extension sets
3.1
plug
accessory having pins designed to engage with the contacts of a socket-outlet
Note 1 to entry: A plug allows the manual connection and disconnection of an electrical load to an electrical supply
by an ordinary person.
Note 2 to entry: The plug can be connected to a cable or integrated into an accessory.
Note 3 to entry: In adaptors, the plug can be integral or detachable, see IEC 60884-2-5.
Note 4 to entry: For special purposes such as lighting chains (see also IEC 60598-2-20), two or three single-core
cables can be connected within the plug.
3.2
socket-outlet
accessory having socket-contacts designed to engage with the pins of a plug
Note 1 to entry: The socket-outlet can be connected to a cable or integrated into an accessory.
Note 2 to entry: In adaptors, the socket-outlet can be integral or detachable, see IEC 60884-2-5.
3.3
fixed socket-outlet
socket-outlet intended to be installed at a fixed location and be connected to fixed wiring

– 10 – IEC 60884-2-7:2025 EXV © IEC 2025

3.4
portable socket-outlet
socket-outlet intended to be connected to or integral with one flexible cable and which can
easily be moved from one place to another while connected to the supply
3.5
multiple socket-outlets
combination of two or more socket-outlets
Note 1 to entry: An example is shown in Figure 1 b).
3.6
rewirable plug
plug so constructed that the flexible cable can be replaced
3.7
non-rewirable plug
assembly of the plug and the flexible cable so constructed that the flexible cable cannot be
replaced
3.8
rewirable portable socket-outlet
socket-outlet so constructed that the flexible cable can be replaced
3.9
non-rewirable portable socket-outlet
assembly of the socket-outlet and the flexible cable so constructed that the flexible cable cannot
be replaced
3.10
moulded-on accessory
non-rewirable portable accessory the manufacture of which is completed by insulating material
moulded around pre-assembled component parts and the terminations for the flexible cable
[SOURCE: IEC 60050-442:1998, 442-01-14, modified – "portable" has been added to the
definition and "or cord" has been omitted.]
3.11
mounting box
box intended for mounting in or on a wall, floor or ceiling, etc., for flush or surface application,
intended for use with fixed socket-outlet(s)
3.12
cord set
assembly consisting of a flexible cable or cord fitted with a non-rewirable plug and a non-
rewirable connector, intended for the connection of an electrical appliance to the electrical
supply
[SOURCE: IEC 60050-442:1998, 442-07-04, and IEC 60050-442:2008, 461-06-16]
3.13
cord extension set
assembly consisting of one flexible cable fitted with one plug and one single or multiple portable
socket-outlets
3.14
terminal
insulated or non-insulated connecting device intended for reusable electrical connection of the
external conductors
3.15
termination
insulated or non-insulated connecting device intended for non-reusable electrical connection of
the external conductors
3.16
clamping unit
part(s) of the terminal necessary for the mechanical clamping and the electrical connection of
the conductor(s), including the parts which are necessary to ensure correct contact pressure
[SOURCE: IEC 60050-442:1998, 442-06-12]
3.17
screw-type terminal
terminal for the connection and subsequent disconnection of one conductor or the
interconnection and subsequent disconnection of two or more conductors, the connection being
made, directly or indirectly, by means of screws or nuts of any kind
Note 1 to entry: Term entries 3.18 to 3.23 are examples of screw-type terminals.
3.18
pillar terminal
screw-type terminal in which the conductor is inserted into a hole or cavity, where it is clamped
under the end of the screw or screws
Note 1 to entry: The clamping pressure may be applied directly by the end of the screw or through an intermediate
clamping member to which pressure is applied by the end of the screw.
Note 2 to entry: Examples of pillar terminals are shown in Figure 9.
3.19
stirrup terminal
pillar terminal where the clamping pressure may be applied indirectly by an intermediate
clamping member when the screw is tightened
Note 1 to entry: Examples of stirrup terminals are shown in Figure 9.
3.20
screw head terminal
screw-type terminal in which the conductor is clamped under the head of the screw
Note 1 to entry: The clamping pressure may be applied directly to the head of a screw or through an intermediate
part, such as a washer, clamping plate or anti-spread device.
Note 2 to entry: Examples of screw head terminals are shown in Figure 10.
3.21
stud terminal
screw-type terminal in which the conductor is clamped under a nut
Note 1 to entry: The clamping pressure may be applied directly by a suitably shaped nut or through an intermediate
part, such as a washer, clamping plate or anti-spread device.
Note 2 to entry: Examples of stud terminals are shown in Figure 10.

– 12 – IEC 60884-2-7:2025 EXV © IEC 2025

3.22
saddle terminal
screw-type terminal in which the conductor is clamped under a saddle by means of two or more
screws or nuts
Note 1 to entry: Examples of saddle terminals are shown in Figure 11.
3.23
mantle terminal
screw-type terminal in which the conductor is clamped against the base of a slot in a threaded
stud by means of a nut
Note 1 to entry: The conductor is clamped against the base of the slot by a suitably shaped washer under the nut,
by a central peg if the nut is a cap nut, or by equally effective means for transmitting the pressure from the nut to the
conductor within the slot.
Note 2 to entry: Examples of mantle terminals are shown in Figure 12.
3.24
screwless-type terminal
connecting device for the connection and subsequent disconnection of a rigid (solid or stranded)
or flexible conductor or the interconnection of two or more conductors, capable of being
dismantled, the connection being made, directly or indirectly, by means of springs, parts of
angled, eccentric or conical form, etc., without special preparation of the conductor concerned,
other than removal of insulation
3.25
thread-forming screw
screw having an uninterrupted thread, which by screwing in, forms a thread by displacing
material
Note 1 to entry: An example of a thread-forming screw is shown in Figure 2.

Figure 2 – Example of thread-forming screw
3.26
thread-cutting screw
screw having an interrupted thread, which by screwing in, forms a thread by removing material
Note 1 to entry: An example of a thread-cutting screw is shown in Figure 3.

Figure 3 – Example of thread-cutting screw
3.27
rated voltage
voltage assigned by the manufacturer for a specified operating condition of an accessory
[SOURCE: IEC 60050-442:1998, 442-01-03, modified – The domain "(for accessories)" has
been omitted.]
3.28
rated current
current assigned by the manufacturer for specified operating condition of an accessory
Note 1 to entry: Examples of the operating conditions are ambient condition, characteristics of the power supply,
duty cycle or duty type.
[SOURCE: IEC 60050-442:1998, 442-01-02, modified – The domain "(for accessories)" has
been omitted and the note to entry added.]
3.29
shutter
movable part incorporated into a socket-outlet arranged to shield at least the live
socket-contacts automatically when the plug is withdrawn
3.30
type test
test of one or more devices made to a certain design to show that the design meets certain
specifications
3.31
routine test
test to which each individual device is subjected during and/or after manufacture to ascertain
whether it complies with certain criteria
3.32
base
part of the socket-outlet supporting the socket-contacts
3.33
live part
conductor or conductive part intended to be energized in normal use, including a neutral
conductor, but by convention not a PEN conductor
Note 1 to entry: Live parts according to this document are always considered as hazardous with the exception of
SELV circuits.
[SOURCE: IEC 60050-826:2004, 826-12-08, modified – "operation" has been replaced with
"use"; "or PEM conductor or PEL conductor" and the note to entry omitted.]
3.34
cable anchorage
part of an accessory which has the ability to limit the displacement of a fitted flexible cable
against pull, push and turning forces
3.35
main part
assembly consisting of the base and other parts
Note 1 to entry: This assembly is not intended to be dismantled at any time after manufacture.
3.36
grommet
component used to support and protect the cable or conduit at the point of entry
Note 1 to entry: A grommet may also prevent the ingress of moisture or contaminants.
Note 2 to entry: Examples of membranes and grommets are shown in Figure 4.

– 14 – IEC 60884-2-7:2025 EXV © IEC 2025

Key
1 Box
2 Entry membrane
3 Envelope
4 Protective membrane
5 Grommet
6 Switch
Figure 4 – Examples of membranes and grommets
3.37
entry membrane
component or integral part of the accessory used to protect the cable which may be used to
support the cable or conduit at the point of entry
Note 1 to entry: An entry membrane may also prevent the ingress of moisture or contaminants and may be part of
a grommet.
Note 2 to entry: Examples of membranes and grommets are shown in Figure 4.
3.38
protective membrane
component or integral part of the accessory that is not intended to be penetrated in normal use
and is intended to provide protection against ingress of water or solid objects and/or to allow
the operation of an accessory
Note 1 to entry: Examples of membranes and grommets are shown in Figure 4.

3.39
normal load
load typically associated with household appliances
Note 1 to entry: Examples of normal loads:
– washing machines,
– refrigerators,
– clothes irons,
– vacuum cleaners,
– multimedia equipment.
3.40
high load
HL
load that applies long and repetitive cycles up to the rated current to the accessories exceeding
normal load conditions
Note 1 to entry: Examples of applications having HLs are electric vehicle chargers and large terrace heaters.
3.41
crimped connection
permanent connection made by the application of pressure inducing the deformation or
reshaping of the barrel around the conductor of a cable
Note 1 to entry: In some cases the deformation or reshaping of the barrel may affect the form of the conductor.
Note 2 to entry: Examples of crimped connections are shown in IEC 60352-2.
[SOURCE: IEC 60050-461:2008, 461-19-01, modified – Note 2 to entry has been added.]
3.42
pilot light
device incorporating a light source either integral or designed to be installed with the accessory
and intended to give for example an indication of the accessory state or to indicate the
accessory location
3.43
protective earthing
protective grounding, (US)
earthing for purposes of electrical safety
[SOURCE: IEC 60050-195:2021, 195-01-11]
3.44
functional earthing
earthing for purposes other than electrical safety
[SOURCE: IEC 60050-195:2021, 195-01-13, modified – The term "functional grounding" has
been omitted.]
3.45
stroke
insertion or withdrawal of the plug
3.101
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

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3.102
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
Accessories and boxes of surface mounting accessories shall be so designed and constructed
that, in normal use, their performance is reliable and safety is achieved by reducing risk to a
tolerable level, as defined in ISO/IEC Guide 51.
NOTE In the following country, a load connected by plugs and socket-outlets for household and similar purposes
shall not exceed an energy quantity of Emax = 7 360 VAh in 3 h: AT, DE.
Compliance is checked by meeting all the relevant requirements and tests specified.
Components such as plugs, socket-outlets (including multiple socket-outlets) and flexible
cables of the cord extension sets shall be 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
5.1 General
Tests shall be carried out to prove compliance with the requirements laid down in this document.
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 can submit, together with a number of specimens specified in 5.4, the additional set of
specimens which can be required, should one specimen fail. The testing station will then, without further request,
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
Accessories should preferably be of a type and preferably have a voltage and current rating as
shown in Table 2.
Table 2 – Preferred combinations of types and ratings
Type Rated voltage Rated current
General, with P = pole Implementation V A
2P (non-rewirable portable
L1 + L2 or L1 + N 130 or 250 2,5
accessories)
2P L1 + L2 or L1 + N 130 or 250 6
130 or 250 6
2P + L1 + L2 + or L1 + N +
2P L1 + L2 or L1 + N
130 or 250
2P +  L1 + L2 + or L1 + N +
2P +  L1 + L2 +
400 or 440
3P +  L1 + L2 + L3 +
3P + N +  L1 + L2 + L3 + N +
NOTE 1 Standardized values and configurations of existing systems are reported in IEC/TR 60083.
NOTE 2 L1 + L2 and L1 + N are examples, any combination of the 3 phases are possible.
The phase contacts L1, L2, L3 and the neutral contact N, if any, are treated as pole and considered to be live.
In some tables or tests, is treated as a pole.

NOTE 1 In the following countries fixed 2P socket-outlets are not allowed: AT, BR, DE, IT, GB, TR.

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NOTE 2 In the following country, fixed 2P socket-outlets are allowed only under certain conditions as specified in
the wiring code: BE, ZA (SANS 10142-1).
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, 7.1.3 and 7.1.4.
7.1 Accessories classification
7.1.1 Accessories are classified according to the degree of protection against access to
hazardous parts and against harmful effects due to the ingress of solid foreign objects as
described in IEC 60529.
7.1.2 Accessories are classified according to the degree of protection against harmful effects
due to the ingress of water as described in IEC 60529.
7.1.3 Classification according to the provision for earthing:
7.1.3.1 Accessories without earthing contact;
7.1.3.2 Accessories with earthing contact.
7.1.4 Classification according to the method of connecting the cable:
7.1.4.1 Rewirable accessories;
7.1.4.2 Non-rewirable accessories.

8 Marking
8.1 General
Accessories shall be marked as follows:
– deleted;
– deleted;
– deleted;
– the name, trademark or identification mark of the manufacturer or responsible vendor;
– type reference which may be a catalogue number;
NOTE 1 The type reference can be the series reference only.
– first characteristic numeral for the degree of protection against access to hazardous parts
and against harmful effects due to ingress of solid foreign objects, if declared to be higher
than 2, and for fixed socket-outlets higher than 4, in which case the second characteristic
numeral shall also be marked;
– second characteristic numeral for the degree of protection against harmful effects due to
ingress of water, if declared to be higher than 0, and for fixed socket-outlets higher than 2,
in which case the first characteristic numeral shall also be marked.
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
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.
NOTE 2 The degrees of protection are based on IEC 60529.
In addition, socket-outlets with screwless-type terminals shall be marked with the following:
– an appropriate marking indicating the length of insulation to be removed before the insertion
of the conductor into the screwless-type terminal;
– an indication of the suitability to accept rigid conductors only, for those socket-outlets having
this restriction.
– in the case of multiple portable socket-outlets or when there is an overcurrent protective
device, the power in watts.
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 calculate
...