SIST EN 62094-1:2004

SLOVENSKI SIST EN 62094-1:2004

STANDARD
januar 2004
(istoveten EN 62094-1:2003)
Indicator light units for household and similar fixed-electrical installations - Part 1:
General requirements (IEC 62094-1:2002)
ICS 29.120.99; 29.140.99 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 62094-1
NORME EUROPÉENNE
EUROPÄISCHE NORM January 2003

ICS 29.120.99; 29.140.99
English version
Indicator light units for household
and similar fixed-electrical installations
Part 1: General requirements
(IEC 62094-1:2002)
Voyants lumineux pour installations Anzeigeleuchten für Haushalt
électriques fixes domestiques und ähnliche ortsfeste elektrische
et analogues Installationen
Partie 1: Prescriptions générales Teil 1: Allgemeine Anforderungen
(CEI 62094-1:2002) (IEC 62094-1:2002)

This European Standard was approved by CENELEC on 2002-12-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.

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

CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,
Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2003 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 62094-1:2003 E
Foreword
The text of document 23B/679/FDIS, future edition 1 of IEC 62094-1, prepared by SC 23B, Plugs,
socket-outlets and switches, of IEC TC 23, Electrical accessories, was submitted to the IEC-CENELEC
parallel vote and was approved by CENELEC as EN 62094-1 on 2002-12-01.

The following dates were fixed:

– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2003-09-01

– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-12-01

Annexes designated "normative" are part of the body of the standard.
In this standard, annex ZA is normative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62094-1:2002 was approved by CENELEC as a European
Standard without any modification.

In the official version, for Bibliography, the following notes have to be added for the standards indicated:

IEC 60417-1 NOTE Harmonized as EN 60417-1:1999 (not modified).
IEC 60598 NOTE Harmonized in EN 60598 series (modified).
IEC 60999-1 NOTE Harmonized as EN 60999-1:2000 (not modified).
__________
- 3 - EN 62094-1:2003
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
IEC 60061 (mod) Series Lamp caps and holders together with EN 60061 Series
gauges for the control of
interchangeability and safety
1) 2)
IEC 60112 - Method for determining the comparative HD 214 S2 1980
and the proof tracking indices of solid
insulating materials under moist
conditions
1) 2)
IEC 60212 - Standard conditions for use prior to and HD 437 S1 1984
during the testing of solid electrical
insulating materials
1) 2)
IEC 60529 - Degrees of protection provided by EN 60529 1991
enclosures (IP Code) + corr. May 1993

IEC 60695-2-10 2000 Fire hazard testing EN 60695-2-10 2001
Part 2-10: Glowing/hot-wire based test
methods - Glow-wire apparatus and
common test procedure
IEC 60695-2-11 2000 Part 2-11: Glowing/hot-wire based test EN 60695-2-11 2001
methods - Glow-wire flammability test
method for end-products
IEC 60998 (mod) Series Connecting devices for low-voltage EN 60998 Series
circuits for household and similar
purposes
IEC 61032 1997 Protection of persons and equipment by EN 61032 1998
enclosures - Probes for verification

1)
Undated reference.
2)
Valid edition at date of issue.

NORME CEI
INTERNATIONALE IEC
62094-1
INTERNATIONAL
Première édition
STANDARD
First edition
2002-10
Voyants lumineux pour installations électriques
fixes domestiques et analogues –
Partie 1:
Prescriptions générales
Indicator light units for household
and similar fixed-electrical installations –
Part 1:
General requirements
© IEC 2002 Droits de reproduction réservés ⎯ Copyright - all rights reserved
Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any
utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including
électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from
microfilms, sans l'accord écrit de l'éditeur. the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch  Web: www.iec.ch
CODE PRIX
XB
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

62094-1 © IEC:2002 – 3 –
CONTENTS
FOREWORD . 7
1 Scope . 9
2 Normative references. 9
3 Definitions .11
4 General requirements .13
5 General notes on tests.13
6 Ratings .15
7 Classification .15
8 Marking .17
9 Checking of dimensions .23
10 Protection against electric shock.23
11 Provision for earthing.27
12 Terminals.27
13 Constructional requirements .49
14 Resistance to ageing, protection provided by enclosures of indicator units and
resistance to humidity .59
15 Insulation resistance and electric strength .65
16 Temperature rise .67
17 Mechanical strength.69
18 Resistance to heat .81
19 Screws, current-carrying parts and connections .83
20 Creepage distances, clearances and distances through sealing compound.87
21 Resistance of insulating material to abnormal heat, to fire and to tracking .91
22 Resistance to rusting .93
Bibliography.121
Figure 1 – Pillar terminal .97
Figure 2 – Screw terminals and stud terminals .99
Figure 3 – Mantle terminals.101
Figure 4 – Thread-forming screw.101
Figure 5 – Thread-cutting screw .101
Figure 6 – Test apparatus for checking damage to conductors .103
Figure 7 – Information for deflection test .105
Figure 8 – Impact test apparatus .107
Figure 9 – Details of the striking element for impact test apparatus.107
Figure 10 – Details of the mounting support for specimen for impact test apparatus.109
Figure 11 – Details of the mounting block for flush type equipment for use with the
impact test apparatus.109

62094-1 © IEC:2002 – 5 –
Figure 12 – Arrangement for test on covers and cover plates .111
Figure 13 – Gauge (thickness about 2 mm) for the verification of the outline of covers
and cover plate .111
Figure 14 – Examples of application of the gauge of Figure 13 on covers fixed without
screws on mounting surface or supporting surface .113
Figure 15 – Examples of application of the gauge of Figure 13 in accordance with the
requirements of 17.8 .115
Figure 16 – Gauge for verification of grooves, holes and reverse tapers.117
Figure 17 – Sketch showing the direction of application of the gauge of Figure 16 .117
Figure 18 – Ball pressure test apparatus .117
Figure 19 – Test wall in accordance with the requirements of 14.2.2 .119
Table 1 – Composition of conductors .31
Table 2 – Tightening torque for the verification of the mechanical strength of screw-
type terminal .31
Table 3 – Test values for flexing and pull tests for copper conductors .31
Table 4 – Test values for pull test .33
Table 5 – Dimensions of copper conductors for screwless terminals .39
Table 6 – Test current for the verification of electrical and thermal stresses of
screwless terminals.43
Table 7 – Deflection test forces.47
Table 8 – Forces to be applied to covers, cover-plates or other accessible parts
whose fixing is not dependent on screws.51
Table 9 – External cable diameter limits for surface type indicator light units .57
Table 10 – Test voltage, points of application and minimum values of insulation
resistance for the verification of electric strength.67
Table 11 – Height of fall for impact test .73
Table 12 – Torque for verification of the mechanical strength of glands.77
Table 13 – Creepage distances, clearances and distances through sealing compound.89

62094-1 © IEC:2002 – 7 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDICATOR LIGHT UNITS FOR HOUSEHOLD AND SIMILAR
FIXED-ELECTRICAL INSTALLATIONS –
Part 1: General requirements
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 62094 has been prepared by subcommittee 23B: Plugs, socket-
outlets and switches, of IEC technical committee 23: Electrical accessories.
The text of this standard is based on the following documents:
FDIS Report on voting
23B/679/FDIS 23B/685/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
The committee has decided that the contents of this publication will remain unchanged until
2005-12. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
62094-1 © IEC:2002 – 9 –
INDICATOR LIGHT UNITS FOR HOUSEHOLD AND SIMILAR
FIXED-ELECTRICAL INSTALLATIONS –
Part 1: General requirements
1 Scope
This International Standard applies to stand-alone indicator light units intended to give a
visible signal. They are designed for a.c. only with a rated voltage not exceeding 440 V and
a rated power not exceeding 10 W, for household and similar fixed-electrical installations,
either indoors or outdoors.
NOTE 1 Indicator light units are not intended for lighting as a luminaire (see IEC 60598).
This standard does not apply to pilot lights incorporated in products complying with their own
standards which are tested as part of that product.
The standard also applies to boxes for indicator light units, with the exception of flush-
mounting boxes (according to IEC 60670) for flush-type indicator light units.
Indicator light units complying with this standard are suitable for use at ambient temperatures
not normally exceeding 25 °C, but occasionally reaching 35 °C.
In locations where special conditions prevail, as in ships, vehicles and the like and in
hazardous locations, for example where explosions are liable to occur, special constructions
may be required.
NOTE 2 LEDs and lamps are not considered as indicator light units, but as components.
2 Normative references
The following referenced documents are indispensable for the application of this document.
For dated references, only the edition cited applies. For undated references, the latest edition
of the referenced document (including any amendments) applies.
IEC 60061 (all parts), Lamp caps and holders together with gauges for the control of
interchangeability and safety
IEC 60112, Method for determining the comparative and the proof tracking indices of solid
insulating materials under moist conditions
IEC 60212, Standard conditions for use prior to and during the testing of solid electrical
insulating materials
IEC 60529, Degrees of protection provided by enclosures (IP Code)
IEC 60695-2-10:2000, Fire hazard testing – Part 2-10: Glowing/hot wire based test methods –
Glow wire apparatus and common test procedure
IEC 60695-2-11:2000, Fire hazard testing – Part 2-11: Glowing/hot wire based test methods –
Glow wire flammability test method for end-products

62094-1 © IEC:2002 – 11 –
IEC 60998 (all parts), Connecting devices for low-voltage circuits for household and similar
purposes
IEC 61032:1997, Protection of persons and equipment by enclosures – Probes for verification
3 Definitions
For the purposes of this standard the following definitions apply.
NOTE Where the terms “voltage” and “current” are used, they imply r.m.s. values unless otherwise specified.
3.1
indicator light unit
device equipped with terminals or terminations (such as connecting leads), designed to give a
visible signal by light emission, not designed for lighting as a luminaire
3.2
terminal with screw clamping
terminal intended for the connection, by clamping only, of external rigid or flexible conductors
3.3
pillar terminal
terminal with screw clamping in which the conductor is inserted into the hole or cavity, where
it is clamped under the end of the screw or screws. 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 Examples of pillar terminals are shown in Figure 1.
3.4
screw terminal
terminal with screw clamping in which the conductor is clamped under the head of the screw.
The clamping pressure may be applied directly to the head of the screw or through an
intermediate part, such as a washer, clamping plate or anti-spread device
NOTE Examples of screw terminals are shown in Figure 2.
3.5
stud terminal
terminal with screw clamping in which the conductor is clamped under a nut. 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 Examples of stud terminals are shown in Figure 2.
3.6
mantle terminal
terminal with screw clamping in which the conductor is clamped against the base of a slot in a
threaded stud by means of a nut. 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 Examples of mantle terminals are shown in Figure 3.

62094-1 © IEC:2002 – 13 –
3.7
screwless terminal
connecting device for the connection and subsequent disconnection of a rigid (solid or
stranded) or flexible conductor or the interconnection of two 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
3.8
thread-forming screw
tapping screw having an uninterrupted thread which, by screwing in, forms a thread by
displacing material
NOTE An example of a thread-forming screw is shown in Figure 4.
3.9
thread-cutting screw
tapping screw having an interrupted thread which, by screwing in, forms a thread by removing
material
NOTE An example of a thread-cutting screw is shown in Figure 5.
3.10
base
part of the indicator light unit retaining current-carrying parts and the mechanism if any,
in position
3.11
rated voltage
voltage assigned to the indicator light unit by the manufacturer
3.12
rated power
power of the indicator light unit equipped with the lamp(s) assigned by the manufacturer
4 General requirements
Indicator light units and boxes shall be so designed and constructed that, in normal use, their
performance is reliable and without danger to the user or the surroundings.
Compliance is checked by meeting all the relevant requirements and tests specified.
5 General notes on tests
5.1 Tests according to this standard are type tests.
5.2 Unless otherwise specified, the specimens are tested as delivered and under normal
conditions of use.
Indicator light units intended to be installed in dedicated boxes are tested with their
corresponding boxes.
5.3 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 made at an ambient temperature of (20 ± 5) °C.

62094-1 © IEC:2002 – 15 –
5.4 For indicator light units which are marked with one rated voltage and one rated power,
nine specimens are necessary. Three specimens are subjected to all the relevant tests except
the tests of Clause 21, where another three specimens are used. For the test of 21.2, three
additional specimens may be required.
For the tests of 12.3.2, three additional specimens are necessary.
For the tests of 12.3.11, additional specimens having in total at least five screwless terminals
are required.
For the tests of 12.3.12, three additional specimens are necessary; in each specimen, one
clamping unit is tested.
5.5 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 an assembly or a manufacturing fault, 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 submit, together with the number of specimens specified in 5.4 an additional set of
specimens which may be required, should one specimen fail. The testing station will then, without further request,
test additional specimens and will reject only 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.
6 Ratings
6.1 Indicator light units shall preferably have rated voltages of 6 V, 12 V, 24 V, 48 V, 130 V,
230 V, 250 V, 277 V, 380 V, 400 V, 415 V and 440 V.
6.2 Indicator light units shall have rated power not exceeding 10 W.
Compliance with the requirements of 6.1 and 6.2 is checked by inspection of the marking.
6.3 Indicator light units shall preferably have a degree of protection IP20, IP40, IP44, IP54
or IP55.
7 Classification
Indicator light units are classified as follows.
7.1 According to the degree of protection against access to hazardous parts and against
harmful effects due to the ingress of solid foreign objects:
– IP2X: indicator light units protected against access to hazardous parts with a finger and
against harmful effects due to ingress of solid foreign objects of 12,5 mm diameter
and greater;
– IP4X: indicator light units protected against access to hazardous parts with a wire and
against harmful effects due to ingress of solid foreign objects of 1,0 mm diameter
and greater;
– IP5X: indicator light units protected against access to hazardous parts with a wire and
protected against dust.
62094-1 © IEC:2002 – 17 –
7.2 According to the degree of protection against harmful effects due to the ingress of water:
– IPX0: indicator light units not protected against ingress of water;
– IPX4: indicator light units protected against splashing water;
– IPX5: indicator light units protected against water jets.
NOTE For an explanation of IP codes see IEC 60529.
7.3 According to the method of mounting the indicator light units:
– surface-type;
– flush-type;
– semi flush-type;
– panel-type;
– architrave-type.
7.4 According to the method of installation, as a consequence of the design of the indicator
light units:
– indicator light units where the cover or cover plate can be removed without displacement
of the conductors (design A);
– indicator light units where the cover or cover plate cannot be removed without
displacement of the conductors (design B).
NOTE If an indicator light unit has a base (main part) which cannot be separated from the cover or cover plate,
and requires a supplementary plate to meet the standard, which can be removed for redecorating the mounting
surface (e.g. wall, ceiling, etc.) without displacement of the conductors, it is considered to be of design A, provided
the supplementary plate meets the requirements specified for covers and cover plates.
7.5 According to the type of terminals or terminations:
– indicator light units with screw-type terminals;
– indicator light units with screwless terminals for rigid conductors only;
– indicator light units with screwless terminals for rigid and flexible conductors;
– indicator light units without terminals equipped with connecting leads.
7.6 According to the possibility of changing the light source:
– with a tool;
– without a tool;
– not possible.
8 Marking
8.1 Indicator light units shall be marked with:
– rated voltages in volts;
– symbol for nature of supply;
– manufacturer's or responsible vendor's name, trade mark or identification mark;
– type reference, which may be a catalogue number;
– 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 higher than
2, in which case the second characteristic numeral shall also be marked;

62094-1 © IEC:2002 – 19 –
– second characteristic numeral for the degree of protection against harmful effects due to
the ingress of water, if declared higher than 0, in which case the first characteristic
numeral shall also be marked;
– the rated power of each lamp in watts (or the rated current in amperes) for replaceable
lamp(s) only. For indicator light units with more than one lamp holder, this marking shall
be placed near each individual lamp holder unless the lamp holders are identical, in which
case the marking may only appear once.
In addition, indicator light units with screwless terminals shall be marked with:
– an indication of the suitability to accept rigid conductors only, for those indicator light units
having this restriction;
– the minimum and maximum cross-section area of connectable conductors;
– the length of conductor insulation to be removed (12.3.8).
This additional information may be put on the indicator light unit or the smallest packaging unit.
8.2 When symbols or abbreviations are used, they shall be as follows:
Watts . W
Amperes. A
Volts. V
Alternating current. ~
Neutral .N
Line. L
Protective earth.
Degree of protection, when relevant .IPXX
Screwless terminals which are able to accept rigid conductors only. r
NOTE 1 Details of construction of symbols are given in IEC 60417-1.
NOTE 2 In the IP code the letter “X” is replaced by the relevant number.
NOTE 3 Lines formed by the construction of the tool are not considered as part of the marking.
The marking for the nature of supply shall be placed next to the marking of the rated voltage.
8.3 The following markings shall be placed on the main part of the indicator light unit:
– the rated power, rated voltage, nature of supply,
– either the name, trade mark, or identification mark of the manufacturer or of the
responsible vendor,
– type reference.
NOTE 1 The type reference may be the series reference only.
Parts such as cover plates, which are necessary for safety purposes and are intended to be
sold separately, shall be marked with the manufacturer's or responsible vendor's name, trade
mark or identification mark and type reference.
The IP code, when applicable, shall be marked so as to be easily discernible when the
indicator light unit is mounted and wired as in normal use.

62094-1 © IEC:2002 – 21 –
The marking shall be clearly visible with normal or corrected vision, without additional
magnification, marked either on the front of the indicator light unit or on the inner part of its
associated enclosure, or on the main part of the indicator light unit so that it is easily legible
on removal of any cover or cover plate which may be present when the indicator light unit is
mounted and wired as in normal use. These markings shall not be placed on parts which can
be removed without the use of a tool.
The marking of the maximum power shall be clearly visible when changing the lamp(s).
NOTE 2 Additional type references may be marked on the main part, or on the outside or the inside of the
associated enclosure.
NOTE 3 The term ‘main part’ means that part carrying the contacts and any part integral with it; it does not
include knobs, handles and the like or parts intended to be sold separately.
8.4 Terminals intended for the connection of phase conductors shall be identified unless this
is of no importance, is self-evident or is indicated on a wiring diagram.
NOTE 1 Such identification may take the form of a letter L.
When placed on the product these markings shall not be on screws or any other easily
removable parts.
NOTE 2 The wiring diagram may be an instruction sheet which accompanies the indicator light units.
NOTE 3 “Easily removable parts” are those parts which can be removed during the normal installation of the
indicator light units.
8.5 Terminals intended exclusively for the neutral conductor shall be indicated by the letter N.
Earthing terminals shall be indicated by the symbol .
These markings shall not be placed on screws or any other easily removable part.
8.6 If it is necessary to take special precautions when installing the indicator light units,
details of these shall be given in an instruction sheet which accompanies the indicator light
unit.
If it is necessary to take precaution against touching live parts when changing a lamp, details
shall be given in an instruction sheet which accompanies the indicator unit.
Instruction sheets shall be written in the official language(s) of the country in which the
indicator light units are intended to be sold.
Compliance with the requirements of 8.1 to 8.6 is checked by inspection.
NOTE 1 Special precautions may, for example, be necessary for unenclosed indicator light units and for indicator
light units for panel mounting.
NOTE 2 In order to ensure that, after installation, the conditions necessary to meet the requirements of this
standard are achieved, the instruction sheet should where necessary include clear information with regard to the
following:
− dimensions of the space to be provided for each indicator light unit;
− dimensions and position of the means for supporting and fixing the indicator light unit within this space;
− minimum clearance between the various parts of the indicator light unit and the surrounding parts where fitted;
− minimum dimensions of ventilating openings, if needed, and their correct arrangement;
− instructions for the correct connection of the connecting leads to other accessories.

62094-1 © IEC:2002 – 23 –
8.7 Marking shall be durable and easily legible.
Compliance is checked by inspection and by the following test.
The marking is rubbed by hand for 15 s with a piece of cloth soaked with water and again for
15 s with a piece of cloth soaked with petroleum spirit.
Marking made by impression, moulding, pressing or engraving is not subjected to this test.
NOTE It is recommended that the petroleum spirit used consist of a solvent hexane with an aromatic content of
maximum 0,1 % in volume percentage, a kauributanol value of approximately 29, an initial boiling point of
approximately 65 °C, a dry point of approximately 69 °C and a density of approximately 0,68 g/cm .
9 Checking of dimensions
Indicator light units and boxes shall comply with the appropriate standard sheets (if any).
Compliance is checked by measurement.
If lampholders are used, they shall comply with IEC 60061.
10 Protection against electric shock
10.1 Indicator light units shall be so designed that when they are mounted and wired as in
normal use and equipped with lamp(s), 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 specimen is mounted as in normal use and fitted with conductors of the smallest cross-
sectional area specified in Clause 12; the test is repeated using conductors of the largest
cross-sectional area specified in Clause 12.
The standard test finger (test probe B of IEC 61032) is applied in every possible position, an
electrical indicator, with a voltage not less than 40 V and not more than 50 V, being used to
show contact with the relevant part.
Indicator light units, having enclosures or covers in thermoplastic or elastomeric material, are
subjected to the following additional test, which is carried out at an ambient temperature of
(35 ± 2)°C, the indicator light units being at this temperature.
During the additional test, the indicator light units are subjected for 1 min to a force of 75 N
applied through the tip of a straight unjointed test finger (test probe 11 of IEC 61032).
This finger, with an electrical indicator as described above, is applied to all places where
yielding of insulating material could impair the safety of the indicator light units, but is not
applied to membranes or the like and is applied to thin-walled knock-outs with a force of only
10 N. During this test, indicator light units with their associated mounting means shall not
deform to such an extent that live parts can be touched with the unjointed test finger.
NOTE Membranes or the like are tested according to 13.13.1 only.

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10.2 Accessible parts of indicator light units classified IXP0 shall be made of insulating
material with the exception of the following:
a) small screws and the like which are insulated from live parts and which are used for fixing
bases and covers or cover plates;
b) covers and cover plates of metal which comply with the requirements of 10.2.1 or 10.2.2.
10.2.1 Covers or cover plates of metal shall be protected by additional insulation made by
insulating linings or insulating barriers. The insulating linings or insulating barriers shall:
– either be fixed to covers or cover plates or the body of the indicator light units in such a
way that they cannot be removed without being permanently damaged,
– or be so designed that
• they cannot be replaced in an incorrect position;
• if they are omitted, the indicator light units are rendered inoperable or manifestly
incomplete;
• there is no risk of accidental contact between live parts and metal covers or cover
plates, for example through their fixing screws, even if a conductor should come away
from its terminal;
• precautions are taken in order to prevent creepage distances or clearances becoming
less than the values specified in Clause 20.
Compliance is checked by inspection.
The above linings or barriers shall comply with the tests of Clauses 15 and 20.
NOTE Insulating coating sprayed on the inside or on the outside of the metal cover or cover plate is not deemed
to be an insulating lining or barrier for the purpose of this subclause.
10.2.2 The earthing of metal covers or cover plates is made while fixing the covers or cover
plates and may be made without requiring the use of means other than the fixing means; the
resulting connection shall be of low resistance.
NOTE Fixing screws or other means are allowed.
Compliance is checked by inspection and by the tests of 11.4.
10.3 Replacement of a lamp
When equipped with lamp(s), indicator light units shall be so constructed that their live parts
are not accessible when they are opened for replacing lamp(s), unless for the replacement of
the lamp a tool is necessary (see 8.6).
Compliance is checked by inspection.

62094-1 © IEC:2002 – 27 –
11 Provision for earthing
11.1 Accessible metal parts which can become live in the event of an insulation fault shall be
provided with, or permanently and reliably connected to, an earthing terminal.
NOTE 1 This requirement does not apply to the metal cover plates mentioned in 10.2.1.
NOTE 2 For the purpose of this requirement, small screws and the like, isolated from live parts, for fixing bases,
covers or cover plates, are not considered as accessible parts which can become live in the event of an insulation
fault.
11.2 Earthing terminals shall be terminals with screw clamping or screwless terminals and
shall comply with the appropriate requirements of Clause 12.
They shall be of the same size as the corresponding terminals of the supply conductors
except that any additional external earthing terminal shall be of a size suitable for conductors
of at least 6 mm .
11.3 Surface-type indicator units with an enclosure of insulating material, having an IP code
higher than IPX0 and more than one cable inlet, shall be provided with either an internal fixed
earthing terminal or adequate space for a floating terminal allowing the connection of an
incoming and outgoing conductor for the continuity of the earthing circuit.
Clause 12 does not apply to floating terminals.
Compliance with 11.1 to 11.3 is checked by inspection and by tests of Clause 12.
Compliance for adequate space for floating terminals is checked by performing a test
connection using the type of terminal specified by the manufacturer.
11.4 The connection between the earthing terminal and accessible metal parts to be
connected thereto shall be of low resistance.
Compliance is checked by the following test.
A current of 25 A derived from an a.c. source having a no-load voltage not exceeding 12 V, is
passed between the earthing terminal and each of the accessible metal parts in turn.
The voltage drop between the earthing terminal and the accessible metal part is measured,
and the resistance calculated from the current and this voltage drop.
In no case shall the resistance exceed 0,05 Ω.
NOTE Care should be taken that the contact resistance between the tip of the measuring probe and the metal
part under test does not influence the test results.
12 Terminals
12.1 General
Terminals of indicator light units shall be provided with screw clamping or with screwless
clamping.
62094-1 © IEC:2002 – 29 –
The means for clamping the conductors in the terminals shall not serve to fix any other
component, although they may hold the terminals in place or prevent them from turning.
All the tests on terminals, with the exception of 12.3.11, shall be carried out after the test of
Clause 16.
Compliance is checked by inspection and by the tests of 12.2 or 12.3, as applicable.
12.2 Terminals with screw clamping for external copper conductors
12.2.1 Indicator light units provided with terminals with screw clamping shall allow the proper
connection of rigid (solid or stranded) or flexible copper conductors having nominal cross-
2 2
sectional areas from 1 mm up to 2,5 mm inclusive (the largest conductor having a diameter
of 2,21 mm).
Each supply terminal shall allow the connection of two 2,5 mm conductors.
The conductor space shall be at least that specified in Figures 1, 2 or 3.
Compliance is checked by inspection and by fitting conductors of the smallest and largest
cross-sectional areas specified.
12.2.2 Terminals with screw clamping shall allow conductors to be connected without special
preparation.
Compliance is checked by inspection.
NOTE The term “special preparation” covers soldering of the wires of the conductor, use of cable lugs, formation
of eyelets, etc., but no
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