Household and similar electrical appliances - Safety - Part 2-91: Particular requirements for walk-behind and hand-held lawn trimmers and lawn edge trimmers

This clause of Part 1 is replaced by the following. This European Standard specifies safety requirements and their verification for the design and construction of electric powered walk-behind and hand-held lawn trimmers and lawn edge trimmers, with cutting element(s) of non metallic filament line or freely pivoting non-metallic cutter(s), with a kinetic energy of not more than 10 J each, used by a standing operator for cutting grass, their rated voltage being not more than 250 V for a.c. or 75 V d.c.. NOTE 101 The method of calculating the kinetic energy for the purposes of this standard is given in 22.103. In this European Standard, hand-held and walk-behind lawn trimmers and lawn edge trimmers are referred to collectively as machine(s). This European Standard does not apply to - scissor type or lawn trimmers and lawn edge trimmers with cutting means other than those described above; - lawn trimmers and lawn edge trimmers with collecting devices; - self-propelled lawn trimmers or lawn edge trimmers; EMC and environmental aspects, except noise, have not been considered in this European Standard. This European Standard does not apply to chargers as covered by EN 60335-2-29. This European Standard does not apply to batteries as covered by EN 62133. This European Standard deals with all the significant hazards presented by hand-held and walk-behind lawn trimmers and lawn edge trimmers when they are used as intended and under conditions of misuse which are reasonably foreseeable.

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke - Teil 2-91: Besondere Anforderungen für handgeführte Rasentrimmer und Rasenkantenschneider

Appareils électrodomestiques et analogues - Sécurité - Partie 2-91: Règles particulières pour les coupe-gazon et les coupe-bordures portatifs et à conducteur à pied

S'applique aux coupe-gazon et coupe-bordures électriques, portatifs et à conducteur à pied, comportant un ou plusieurs organes de coupe constitués d'un filament non-métallique ou d'une lame non métallique à pivotement libre, chacun étant caractérisé par une énergie cinétique infériure ou égale à 10 J, utilisés par un opérateur à pied pour couper l'herbe.

Gospodinjski in podobni električni aparati - Varnost - 2-91. del: Posebne zahteve za ročno vodljive in prenosne motorne kose za trate in robove trat

To točko 1. dela nadomešča naslednje besedilo.
Ta evropski standard določa varnostne zahteve in njihovo preverjanje za načrtovanje ter konstrukcijo električno gnanih, ročno vodljivih in prenosnih motornih kos za trate in robove trat, z rezalnimi deli iz nekovinskih niti ali prosto vrtečih se nekovinskih rezil, pri čemer nobeno nima več kot 10 J kinetične energije, ki jih uporablja stoječ upravljavec za košnjo trave, njihova nazivna napetost pa ne sme presegati 250 V izmeničnega toka ali 75 V enosmernega toka.
OPOMBA 101: Metoda za izračun kinetične energije za namene tega standarda je navedena v 22.103.
V tem evropskem standardu so prenosne in ročno vodljive motorne kose za trate in robove trat
označene s skupnim imenom stroji.
Ta evropski standard se ne uporablja za
– škarje ali motorne kose za trate in robove trat s sredstvi rezanja, ki niso
navedena v zgornjem besedilu;
– motorne kose za trate in robove trat z zbiralnimi napravami;
– samognane motorne kose za trate ali robove trat;
Elektromagnetna združljivost in okoljski vidiki z izjemo hrupa niso obravnavani v tem evropskem standardu.
Ta evropski standard se ne uporablja za polnilnike iz standarda EN 60335-2-29.
Ta evropski standard se ne uporablja za baterije iz standarda EN 62133.
Ta evropski standard obravnava vsa večja tveganja, ki jih predstavljajo prenosne in ročno vodljive
motorne kose za trate in robove trat, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji razumno predvidene nepravilne uporabe.

General Information

Status
Published
Publication Date
19-Jun-2014
Current Stage
6060 - Document made available
Due Date
20-Jun-2014
Completion Date
20-Jun-2014

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SLOVENSKI STANDARD
SIST EN 50636-2-91:2015
01-april-2015
1DGRPHãþD
SIST EN 60335-2-91:2004

*RVSRGLQMVNLLQSRGREQLHOHNWULþQLDSDUDWL9DUQRVWGHO3RVHEQH]DKWHYH

]DURþQRYRGOMLYHLQSUHQRVQHPRWRUQHNRVH]DWUDWHLQURERYHWUDW

Household and similar electrical appliances - Safety -- Part 2-91: Particular requirements

for walk-behind and hand-held lawn trimmers and lawn edge trimmers

Sicherheit elektrischer Geräte für den Hausgebrauch und ähnliche Zwecke -- Teil 2-91:

Besondere Anforderungen für handgeführte Rasentrimmer und Rasenkantenschneider

Appareils électrodomestiques et analogues - Sécurité -- Partie 2-91: Règles particulières

pour les coupe-gazon et les coupe-bordures portatifs et à conducteur à pied
Ta slovenski standard je istoveten z: EN 50636-2-91:2014
ICS:
13.120 Varnost na domu Domestic safety
65.060.70 Vrtnarska oprema Horticultural equipment
SIST EN 50636-2-91:2015 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50636-2-91:2015
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SIST EN 50636-2-91:2015
EUROPEAN STANDARD EN 50636-2-91
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2014
ICS 65.060.70 Supersedes EN 60335-2-91:2003
English Version
Household and similar electrical appliances - Safety - Part 2-91:
Particular requirements for walk-behind and hand-held lawn
trimmers and lawn edge trimmers

Appareils électrodomestiques et analogues - Sécurité - Sicherheit elektrischer Geräte für den Hausgebrauch und

Partie 2-91: Règles particulières pour les coupe-gazon et ähnliche Zwecke - Teil 2-91: Besondere Anforderungen für

les coupe-bordures portatifs et à conducteur à pied handgeführte Rasentrimmer und Rasenkantenschneider

This European Standard was approved by CENELEC on 2013-09-02. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 50636-2-91:2014 E
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EN 50636-2-91:2014 - 2 -
Contents Page

Foreword ................................................................................................................................................. 4

Introduction ............................................................................................................................................. 6

1 Scope ................................................................................................................................................. 7

2 Normative references ....................................................................................................................... 7

3 Terms and definitions ...................................................................................................................... 8

4 General requirement ........................................................................................................................ 9

5 General conditions for the tests ..................................................................................................... 9

6 Classification .................................................................................................................................... 9

7 Marking and instructions ...............................................................................................................10

8 Protection against access to live parts ........................................................................................13

9 Starting of motor-operated appliances ........................................................................................13

10 Power input and current ..............................................................................................................13

11 Heating ...........................................................................................................................................13

12 Void ................................................................................................................................................13

13 Leakage current and electric strength at operating temperature ............................................13

14 Transient overvoltages ................................................................................................................13

15 Moisture resistance ......................................................................................................................14

16 Leakage current and electric strength .......................................................................................14

17 Overload protection of transformers and associated circuits .................................................14

18 Endurance .....................................................................................................................................14

19 Abnormal operation ......................................................................................................................14

20 Stability and mechanical hazards ...............................................................................................14

21 Mechanical strength .....................................................................................................................17

22 Construction..................................................................................................................................18

23 Internal wiring ...............................................................................................................................20

24 Components ..................................................................................................................................20

25 Supply connection and external flexible cords .........................................................................20

26 Terminals for external conductors .............................................................................................21

27 Provision for earthing ..................................................................................................................21

28 Screws and connections ..............................................................................................................21

29 Clearances, creepage distances and solid insulation ..............................................................21

30 Resistance to heat and fire ..........................................................................................................21

31 Resistance to rusting ...................................................................................................................21

32 Radiation, toxicity and similar hazards ......................................................................................22

Annexes .................................................................................................................................................27

Annex B (normative) Appliances powered by rechargeable batteries ............................................27

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Annex AA (normative) Safety signs and symbols which may be used on lawn trimmers and

lawn edge trimmers ..............................................................................................................................29

Annex BB (normative) Vibration .........................................................................................................32

Annex CC (normative) Noise test code – Engineering method (grade 2) .......................................37

Annex DD (informative) Example of a material and construction fulfilling the requirements for

an artificial surface ...............................................................................................................................43

Annex EE (informative) Safety instructions .......................................................................................45

Annex FF (normative) Test enclosure - Base.....................................................................................47

Annex ZZ (informative) Coverage of Essential Requirements of EU Directives ............................49

Bibliography ..........................................................................................................................................50

Figures

Figure 101  Guard, lawn trimmer (see Clause 20.101.1) .............................................................. 23

Figure 103  Guard strength test (hand-held trimmers) ................................................................ 25

Figure 104  Cutting head strength test (see Clause 21.102)........................................................ 25

Figure 105  Cutting means measurement (see Clause 22.103) ................................................... 26

Figure AA.1  “Read operator’s manual” ........................................................................................ 29

Figure AA.2  “Keep bystanders away” .......................................................................................... 29

Figure AA.3  “Wear eye protection” ............................................................................................... 30

Figure AA.4  “Do not expose to rain” ............................................................................................ 30

Figure AA.5  “Disconnect the mains plug if the cord becomes damaged or entangled” ........ 30

Figure AA.6  “Wear hearing protection”........................................................................................ 31

Figure BB.1  Examples of transducer location/orientation (hand-held trimmers) .................... 35

Figure BB.2  Examples of transducer location/orientation (walk-behind machines) ............... 36

Figure CC.1  Microphone positions on the hemisphere (see Table CC.1) ................................. 38

Figure DD.1  Sketch of the measurement surface covered with an artificial surface (not to

scale) ..................................................................................................................................................... 44

Figure FF.1  Nail plan of base ......................................................................................................... 47

Figure FF.2  Base detail................................................................................................................... 48

Tables

Table CC.1  Co-ordinates of microphone positions ..................................................................... 39

Table CC.2  Absorption coefficients .............................................................................................. 40

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SIST EN 50636-2-91:2015
EN 50636-2-91:2014 - 4 -
Foreword

This document (EN 50636-2-91:2014) has been prepared by CLC/TC 116 "Safety of motor-operated

electric tools".
The following dates are fixed:
• latest date by which this document has to be
(dop) 2014-12-20
implemented
at national level by publication of an identical
national standard or by endorsement
• latest date by which the national standards conflicting
(dow) 2016-09-02
with this document have to be withdrawn
This document supersedes EN 60335-2-91:2003.
EN 60335-2-91:2013 includes the following significant technical changes:
– rewording of some clauses;
– alignment to EN 60335-1:2012;
– improvement of Clause 20.102.

This document is to be used in conjunction with EN 60335-1:2012, “Household and similar electrical

appliances  Safety  Part 1: General requirements”.
When “Part 1” is mentioned in this standard, it refers to EN 60335-1:2012.

This document supplements or modifies the corresponding clauses in Part 1, so as to convert that

publication into the European Standard “Safety requirements for walk-behind and hand-held lawn

trimmers and lawn edge trimmers”.

Where a particular subclause of Part 1 is not mentioned in document, that subclause applies as far as

is relevant. Where this standard states “addition”, “modification” or “replacement”, the relevant text in

Part 1 is to be adapted accordingly.

Compliance with the relevant clauses of Part 1 together with this document provides one means of

conforming to the specified essential health and safety requirements of the Directive.

This European Standard follows the overall requirements of EN ISO 12100.

Warning: Other requirements arising from other EU Directives can be applicable to the products

falling within the scope of this European Standard.
The following numbering system is used:

– subclauses that are numbered starting from 101 are additional to those in Part 1;

– additional annexes are lettered AA, BB, etc.;
NOTE In this European Standard the following print types are used:
- requirements proper: in roman type;
- test specifications: in italic type;
- explanatory matter: in smaller roman type.

Words in bold in the text are defined in clause 3. When a definition concerns an adjective, the adjective and the associated

noun are also in bold.
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Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such

patent rights.

This document has been prepared under a mandate given to CENELEC by the European Commission

and the European Free Trade Association, and supports essential requirements of EU Directive(s).

For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this

document.
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EN 50636-2-91:2014 - 6 -
Introduction
This document is a type C standard as stated in EN ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and events are

covered is as indicated in the scope of this document.

When provisions of this type C standard are different from those which are stated in type A or B

standards, the provisions of this type C standard take precedence over the other standards, for

machines which have been built and designed to the provisions of this type C standard.

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SIST EN 50636-2-91:2015
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1 Scope
This clause of Part 1 is replaced by the following.

This European Standard specifies safety requirements and their verification for the design and

construction of electric powered walk-behind and hand-held lawn trimmers and lawn edge

trimmers, with cutting element(s) of non-metallic filament line or freely pivoting non-metallic

cutter(s), with a kinetic energy of not more than 10 J each, used by a standing operator for cutting

grass, their rated voltage being not more than 250 V for a.c. or 75 V d.c..

NOTE 101 The method of calculating the kinetic energy for the purposes of this standard is given in 22.103.

In this European Standard, hand-held and walk-behind lawn trimmers and lawn edge trimmers are

referred to collectively as machine(s).
This European Standard does not apply to

− scissor type or lawn trimmers and lawn edge trimmers with cutting means other than those

described above;
− lawn trimmers and lawn edge trimmers with collecting devices;
− self-propelled lawn trimmers or lawn edge trimmers;

EMC and environmental aspects, except noise, have not been considered in this European Standard.

This European Standard does not apply to chargers as covered by EN 60335-2-29.
This European Standard does not apply to batteries as covered by EN 62133.

This European Standard deals with all the significant hazards presented by hand-held and walk-

behind lawn trimmers and lawn edge trimmers when they are used as intended and under

conditions of misuse which are reasonably foreseeable.
2 Normative references
This clause of Part 1 is applicable except as follows.
Addition:

EN 28662-1:1992, Hand-held portable power tools  Measurement of vibrations at the handle 

Part 1: General (ISO 8662-1:1988)

EN 60068-2-75, Environmental testing  Part 2-75: Tests  Test Eh: Hammer tests (IEC 60068-2-

75)

EN 60320 (all parts), Appliance couplers for household and similar general purposes (IEC 60320)

EN 60335-1:2012, Household and similar electrical appliances  Safety  Part 1: General

requirements (IEC 60335-1:2010, modified)

EN 62233:2008, Measurement methods for electromagnetic fields of household appliances and similar

apparatus with regard to human exposure (IEC 62233:2005, modified)

EN ISO 354:2003, Acoustics  Measurement of sound absorption in a reverberation room

(ISO 354:2003)
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EN 50636-2-91:2014 - 8 -

EN ISO 3744:2010, Acoustics  Determination of sound power levels and sound energy levels of

noise sources using sound pressure  Engineering methods for an essentially free field over a

reflecting plane (ISO 3744:2010)

EN ISO 3767-1:2000, Tractors, machinery for agriculture and forestry, powered lawn and garden

equipment  Symbols for operator controls and other displays  Part 1: Common symbols

(ISO 3767-1:1998)

EN ISO 3767-3, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment

 Symbols for operator controls and other displays  Part 3: Symbols for powered lawn and garden

equipment (ISO 3767-3)

EN ISO 4871:2009, Acoustics  Declaration and verification of noise emission values of machinery

and equipment (ISO 4871:1996)

EN ISO 11201:2010, Acoustics  Noise emitted by machinery and equipment  Determination of

emission sound pressure levels at a work station and at other specified positions in an essentially free

field over a reflecting plane with negligible environmental corrections (ISO 11201:2010)

EN ISO 11688-1:2009, Acoustics  Recommended practice for the design of low-noise machinery

and equipment  Part 1: Planning (ISO/TR 11688-1:1995)

EN ISO 12100:2010, Safety of machinery  General principles for design  Risk assessment and

risk reduction (ISO 12100:2010)

ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden

equipment  Safety signs and hazard pictorials  General principles
3 Terms and definitions
This clause of Part 1 is applicable except as follows.
3.1.9
Replacement:
3.1.9
normal operation

operation of the machine at rated voltage with the load necessary to attain rated power input

3.5.2
Replacement:
3.5.2
hand-held trimmer

machine which is supported by hand, possibly assisted by wheel(s), skids or harness etc. and

constructed such that it cannot maintain its operating position without being held by an operator

Addition:
3.101
walk-behind trimmer

machine which is ground supported, controlled by an operator walking behind and constructed such

that it maintains its operating position without being held by an operator
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3.102
lawn trimmer

grass trimming machine where the cutting means operates in a plane approximately parallel to the

ground
3.103
lawn edge trimmer

grass trimming machine where the cutting means operates in a plane approximately perpendicular to

the ground
3.104
cutting means

mechanism used to provide the cutting action in which one or more cutting elements, cutting by

impact, rotate about an axis normal to the cutting plane
3.105
cutting element
single non-metallic filament line or freely pivoting non-metallic cutter
3.106
cutting head
support system for the cutting element
3.107
cutting means control

device activated by the operator’s hand or finger, for controlling the cutting mean’s movement

3.108
power switch
switch that controls the primary operating means of the machine
3.109
no-load

operation of the machine at rated voltage with new cutting means, extendable non-metallic filament

line being trimmed to the maximum cutting length less 5 mm
4 General requirement
This clause of Part 1 is applicable.
5 General conditions for the tests
This clause of Part 1 is applicable except as follows:
5.2 Addition
The machine used for the tests of Clause 18 shall not be used for other tests.
6 Classification
This clause of Part 1 is applicable except as follows.
6.1 Replacement:
Machines shall be of class ll or class lll.
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EN 50636-2-91:2014 - 10 -
Compliance is checked by inspection and by the relevant tests.
6.2 Addition:

Walk-behind trimmers of class II or with class II equipment shall be classified at least as IPX4.

7 Marking and instructions
This clause of Part 1 is applicable except as follows.
7.1 Addition:
Add the following new indents:

− business name and full address of the manufacturer and, where applicable his authorized

representative;
− year of construction;
− designation of the machine,

designation of machine may be achieved by a combination of letters and/or numbers. The

designation may be provided in the form of a code, providing that this code is explained by giving

the explicit designation such as “lawn trimmer”, “lawn edge trimmer” etc. in the instructions

supplied with the machine;
NOTE 1 An example of such code is “A123B”.
− designation of series or type,

allowing the technical identification of the product. This may be achieved by a combination of

letters and/or numbers and may be combined with the designation of machine;
NOTE 2 The term “designation of series or type” is also known as model number.
− mandatory markings;

NOTE 3 For machines and their related products intended to be put on the market in the EEA, CE-marking as defined in

the applicable European Directive(s), e.g. the Machinery Directive.
Add the following new paragraphs:
The following warnings shall be located in easily visible positions, indicating:
WARNING:
- Read instruction manual.
- Keep bystanders away.
- Wear ear protection.

Controls which may give rise to a hazard (e.g. cutting means control in accordance with 22.40) when

operated shall be marked or so placed as to indicate clearly which part of the machine they control.

If the guarding is less than a total of 360°, the direction of rotation of the cutting element(s) shall be

marked on the machine.

Except for walk-behind lawn trimmers with 360 degree guarding, the machine shall also be marked

with the following:
− Wear eye protection.

Mains operated machines shall also be marked with the substance of the following:

− Disconnect the mains plug if the cord becomes damaged or entangled.
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Additionally, hand-held lawn trimmers and hand-held lawn edge trimmers shall be marked with the

following:
− Do not expose to rain.

Marking giving cautionary information shall be located as close as practicable to the relevant hazard.

Such marking shall either be in one of the official languages of the country in which the machine is to

be sold or the safety signs and symbols according to Annex AA shall be used. Symbols according to

EN ISO 3767-1, EN ISO 3767-3 and/or ISO 11684 may also be used, as appropriate. Colours shall be

in accordance with EN ISO 3767-1 and EN ISO 3767-3 and/or ISO 11684 as appropriate unless the

symbols are cast, embossed or stamped when colours are not required. If symbols and/or safety signs

are used, their significance shall be described in the instruction manual.
7.9 This clause of Part 1 is not applicable.
7.12 Replacement:

An instruction manual shall be supplied with the machine, giving operating, servicing, maintenance

and safety instructions that comply as appropriate with EN ISO 12100:2010, 6.4. The words ‘Original

instructions’ shall appear on the language version(s) verified by the manufacturer or his authorised

representative. Where no ‘Original instructions’ exist in the official language(s) of the country where

the machine is to be used, a translation into that/those language(s) shall be provided by the

manufacturer or his authorised representative or by the person bringing the machine into the language

area in question. The translations shall bear the words ‘Translation of the original instructions’, and

they shall be accompanied by a copy of the ‘Original instructions’.
This instruction manual shall include:

a) a repeat of those warnings required to be marked on the machine together with further

explanation, where appropriate. Where safety signs are used in the marking on the machine, their

function shall be explained;

b) a warning to never allow children, persons with reduced physical, sensory or mental capabilities

or lack of experience and knowledge or people unfamiliar with these instructions to use the

machine, local regulations may restrict the age of the operator;

c) a warning to never operate the machine while people, especially children, or pets are nearby;

d) a general description of the machine, the intended use, instructions for the proper use of the

machine including advice on what the machine should be used for, how to use it for the intended

purpose(s) and any reasonably foreseeable misuse thereof;

e) warnings concerning ways - that experience has shown might occur - in which the machinery shall

not be used;

f) instructions for the proper assembly and disassembly of the machine for use, if the machine is not

supplied in a completely assembled form;

g) instructions for proper adjustment and any necessary user maintenance of the machine, including

timescales and a warning of the danger of moving hazardous parts;

h) instructions for the recommended replacement or repair of, or service attention to, critical

components. Where parts are consumable, the part number of the spare part shall be specified;

i) an instruction never to replace the non-metallic cutting means with metallic cutting means;

j) instructions on the operation of all controls;
k) information how to start the machine safely;

l) instructions for the operating position and the correct and safe operation of the machine such as

moving, safe positioning, handling, clearing blockages for use, preparation, maintenance and

storage of the machine;

m) an advice to not overreach and to keep the balance at all times, to always be sure of the footing

on slopes and to walk, never run;

n) a warning not to touch moving hazardous parts before the machine is disconnected from the

mains and the moving hazardous parts have come to a complete stop;
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EN 50636-2-91:2014 - 12 -

o) an advice on the use, length and type of extension cords to be used (not lighter than required by

25.7);

p) information about the residual risks that remain despite the inherent safe design measures,

safeguarding and complementary protective measures adopted;

q) instructions to always wear substantial footwear and long trousers while operating the machine;

r) instructions to disconnect the supply (e.g. remove the plug from the mains or remove the disabling

device)
1) whenever the machine is left by the user;
2) before clearing a blockage;
3) before checking, cleaning or working on the machine;
4) after striking a foreign object to inspect the machine for damage;
5) if the machine starts to vibrate abnormally, for immediately check;

s) instructions when, where and how to inspect the machine, the supply and extension cord for signs

of damage or ageing and, if permitted, how to make repairs;

t) a warning never to operate the machine with defective guards or shields, or without safety

devices, or if the cord is damaged or worn;

u) an advice not to connect a damaged cord to the supply or touch a damaged cord before it is

disconnected from the supply for the reason that damaged cords can lead to contact with live

parts;

v) an advice to keep extension cords away from moving hazardous parts to avoid damages to the

cords which can lead to co
...

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