Saudi Standards, Metrology and Quality Org (SASO)  
 
 
 
FINAL DRAFT  
 
 
 
SASO/FDS/IEC 60 227-1:2020  
 IEC 60227 -1:20 07  
Polyvinyl chloride insulated cables of rated voltages up to and 
including 450/750 V - Part 1: General requirements  
 
ICS:  29.060.20   
THIS DOCUMENT IS A DRAFT SAUDI STANDARD  CIRCULATED FOR 
COMMENT. IT IS, THEREFORE SUBJECT TO CHANGE AND MAY NOT 
BE REFERRED  TO AS A SAUDI STANDARD  UNTIL APPROVED BY 
THE BOARD OF DIRECTORS.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
1 
  Foreword   
Saudi Standards, Metrology and Quality Organization (SASO) has adopted  Standard 
No. (IEC 60227 -1:2007 ) “Polyvinyl chloride insulated cables of rated voltages up to 
and including 450/750 V - Part 1: General requirements" issued by (IEC) in English. 
This standard has been approved as a Saudi Standard with national modifications.  
This SASO IEC 60227 -1:2020 standard is a modified adoption of International 
Standard IEC 60227 -1:20 07, (Polyvinyl chloride insulated cables of rated voltages up 
to and including 450/750 V - Part 1: General requirements). Standard has been varied 
as indicated to take account of Kingdom of Saudi Arabia conditions. The modifications 
are specified in Annex AA and  Annex AB.  
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
2 
 CONTENTS  
FOREWORD  ................................ ................................ ................................ ...........................  4 
 
1 General  ................................ ................................ ................................ ............................  6 
1.1 Scope  ................................ ................................ ................................ ......................  6 
1.2 Normative ref erences  ................................ ................................ ..............................  6 
2 Definitions  ................................ ................................ ................................ ........................  7 
2.1 Definitions relating to insulating and sheathing materials  ................................ ..........  7 
2.1.1  Polyvinyl chloride compound (PVC)  ................................ ..............................  7 
2.1.2 Type of compound  ................................ ................................ .......................  7 
2.2 Definitions relating to the tests  ................................ ................................ .................  7 
2.2.1  Type tests (symbol T) ................................ ................................ ..................  7 
2.2.2  Sample tests (symbol S) ................................ ................................ ..............  7 
2.3 Rated vo ltage  ................................ ................................ ................................ ..........  8 
3 Marking  ................................ ................................ ................................ ............................  8 
3.1 Indication of origin and cable identification  ................................ ...............................  8 
3.1.1  Continuity of marks  ................................ ................................ ......................  8 
3.2 Durability  ................................ ................................ ................................ .................  8 
3.3 Legibility  ................................ ................................ ................................ ..................  8 
4 Core identification  ................................ ................................ ................................ .............  9 
4.1 Core identification by colours  ................................ ................................ ...................  9 
4.1.1  General requirements  ................................ ................................ ..................  9 
4.1.2  Colour schem e ................................ ................................ ............................  9 
4.1.3  Colour combination green -and-yellow  ................................ ...........................  9 
4.2 Core identification by numbers  ................................ ................................ ...............  10 
4.2.1  General requirements  ................................ ................................ ................  10 
4.2.2  Preferred arrang ement of marking ................................ ..............................  10 
4.2.3  Durability  ................................ ................................ ................................ ... 10 
5 General requirements for the construction of cables  ................................ ........................  10 
5.1 Conductors  ................................ ................................ ................................ ............  10 
5.1.1  Material  ................................ ................................ ................................ ..... 10 
5.1.2  Construction  ................................ ................................ ..............................  10 
5.1.3  Check on construction  ................................ ................................ ...............  11 
5.1.4  Electrical resistance  ................................ ................................ ...................  11 
5.2 Insulation  ................................ ................................ ................................ ...............  11 
5.2.1  Material  ................................ ................................ ................................ ..... 11 
5.2.2  Application to the conductor  ................................ ................................ .......  11 
5.2.3  Thickness  ................................ ................................ ................................ .. 11 
5.2.4  Mechanical properties before and after ageing  ................................ ...........  12 
5.3 Filler  ................................ ................................ ................................ ......................  13 
5.3.1  Material  ................................ ................................ ................................ ..... 13 
5.3.2  Application  ................................ ................................ ................................ . 14 
5.4 Extruded inner covering  ................................ ................................ .........................  14 
5.4.1  Material  ................................ ................................ ................................ ..... 14 
5.4.2  Application  ................................ ................................ ................................ . 14 
5.4.3  Thickness  ................................ ................................ ................................ .. 14 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
3 
 5.5 Sheath  ................................ ................................ ................................ ...................  14 
5.5.1  Material  ................................ ................................ ................................ ..... 14 
5.5.2  Application  ................................ ................................ ................................ . 15 
5.5.3  Thickness  ................................ ................................ ................................ .. 15 
5.5.4  Mechanical properties before and after ageing  ................................ ...........  15 
5.6 Tests on completed cables  ................................ ................................ ....................  17 
5.6.1  Electrical properties  ................................ ................................ ...................  17 
5.6.2  Overall dimensions  ................................ ................................ ....................  18 
5.6.3  Mechanical strength of flexible cables  ................................ ........................  19 
5.6.4  Flame retardance  ................................ ................................ .......................  19 
6 Guide to use of the cables  ................................ ................................ ..............................  19 
 
Annex  A (normative)  Code des ignation  ................................ ................................ ................  20 
 
Table 1 – Requirements for the non -electrical tests for polyvinyl chloride (PVC) 
insulation  ................................ ................................ ................................ ..............................  12 
Table 2 – Requirements for the non -electrical test for polyv inyl chloride (PVC) sheaths  ..........  16 
Table 3 – Requirements for electrical tests for PVC insulated cables  ................................ ..... 18 
 
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
4 
 INTERNATIONAL ELECTROTECHNICAL COMMISSION  
–––––––––––  
 
POLYVINYL CHLORIDE INSULATED CABLE S 
OF RATED VOLTAGES UP TO AND  
INCLUDING 450/750  V – 
 
Part 1: General requirements  
 
 
FOREWORD  
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising 
all national electrotechnical committees (IEC Nat ional 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, Techn ical 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 w ith 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 mad e 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 provides no marking procedure to indicate its approval and cannot be rendered responsible for any 
equipment declared to be in conformity with an IEC Publication.  
6) All users should ensure that they have the latest edition of this publica tion.  
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 natur e 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 cite d in this publication. Use of the referenced publications is 
indispensable for the correct application of this publication.  
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of 
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.  
International Standard IEC 60227 -1 has been prepared by IEC technical committee 20: Electric 
cables.  
This third edition  of IEC 60227 -1 cancels and replaces the second edition , published in 1993, 
amendment 1 (1995) and amendment 2 (199 7) The document 20/903 /FDIS, circulated to the  
National Committees as amendment 3, led to the publication of this new edition.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
5 
 The text of this standard is based on the second edition, its amendments 1 and 2, and the 
following documents:  
FDIS  Report on voting  
20/903 /FDIS  20/910 /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 a ccordance with the ISO/IEC Directives, Part 2.  
The committee has decided that the contents of this publication will remain unchanged until the 
maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in the data 
related to the s pecific publication. At this date, the publication will be  
• reconfirmed,  
• withdrawn,  
• replaced by a revised edition, or  
• amended.  
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
6 
 POLYVINYL CHLORIDE INSULATED CABLES  
OF RATED VOLTAGES UP TO AND  
INCLUDING 450/750 V – 
 
Part 1: General requirements  
 
 
 
1 General  
1.1 Scope  
This part of International Standard IEC 60227 applies to rigid and flexible cables with 
insulation, and sheath if any, based on polyvinyl chloride, of rated voltages Uo/U up to and 
including 450/750  V used in power installations of nominal  voltage not exceeding 
450/750  V a.c. 
NOTE  For some types of flexible cables the term cord is used.  
The particular types of cables are specified in IEC 60227 -3, IEC 60227 -4, etc. The code 
designations of these types of cables are given in Annex A. 
The test methods specified in Parts 1, 3, 4, etc. are given in IEC 60227 -2, IEC 60332 -1-2 and 
in the relevant parts of IEC 60811.  
1.2 Normative references  
The following referenced documents are indispensable for the application of this document. For 
dated references, only the edition cited applies. For undate d references, the latest edition of 
the referenced document (including any amendments) applies.  
IEC 60173, Colours of the cores of flexible cables and cords  
IEC 60227 -2, Polyvinyl chloride insulated cables of rated volt age up to and including 
450/750  V – Part 2: Test methods  
IEC 60227 -3, Polyvinyl chloride insulated cables of rated volt age up to and including 
450/750  V – Part 3: Non -sheathed cables for fixed wiring  
IEC 60227 -4, Polyvinyl chloride insulated cables of rated volt age up to and including 
450/750  V – Part 4: Sheathed cables for fixed wiring  
IEC 60227 -5, Polyvinyl chloride insulated cables of rated voltages up to and including 
450/750  V – Part 5: Flexible cables (cords)  
IEC 60228, Conductors of insulated cables  
IEC 60332 -1-2, Tests on electric and optical fibre cables under fire conditions – Part 1 -2: Test 
for vertical flame propagation for a single insulated wire or cable – Procedure for 1 kW pre -
mixed flame   SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
7 
 IEC 60811 -1-1, Common test methods for insulating and sheathing materials of electric 
cables and optical cables  – Part 1: Methods for general application –Measuring of thickness 
and overall dimensions – Tests for determining the mechanical properties  
IEC 60811 -1-2, Common test methods for insulating and sheathing materials of electric 
cables – Part 1: Methods for general application – Section Two: Thermal ageing methods  
IEC 60811 -1-4, Common test methods for insulating and sheathing materials of electric 
cables – Part 1: Methods for general application – Section Four: Tests at low temperature  
IEC 60811 -3-1, Common test methods for insulating and sheathing materials of electric 
cables – Part 3: Methods specific to PVC compounds – Section One: Pressure test at high 
temperature – Tests for resistance to cracking  
IEC 60811 -3-2, Common test methods fo r insulating and sheathing materials of electric 
cables – Part 3: Methods specific to PVC compounds – Section Two: Loss of mass test – 
Thermal stability tests  
IEC 62440, Electric cables – Guide to use for cables with a rated voltage not exceeding 
450/750V 1 
2 Definitions  
For the purpose of this standard the following definitions shall apply.  
2.1 Definitions relating to insulating and sheathing materials  
2.1.1  Polyvinyl chloride compound (PVC)  
Combination of materials suitably selected, proportioned and treated, of which  the 
characteristic constituent is the plastomer polyvinyl chloride or one of its copolymers. The 
same term also designates compounds containing both polyvinyl chloride and certain of its 
polymers.  
2.1.2  Type of compound  
The category in which a compound is place d according to its properties, as determined by 
specific tests. The type designation is not directly related to the composition of the compound.  
2.2 Definitions relating to the tests  
2.2.1  Type tests (symbol T) 
Tests required to be made before supplying a type of ca ble covered by this standard on a 
general commercial basis in order to demonstrate satisfactory performance characteristics to 
meet the intended application. These tests are of such a nature that, after they have been 
made, they need not be repeated unless  changes are made in the cable materials or design 
which might change the performance characteristics.  
2.2.2  Sample tests (symbol S) 
Tests made on samples of completed cable or components taken from a completed cable, 
adequate to verify that the finished product  meets the design specifications.  
___________  
1 In preparation.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
8 
 2.3 Rated voltage  
The rated voltage of a cable is the reference voltage for which the cable is designed and which 
serves to define the electrical tests.  
The rated voltage is expressed by the combination of two values Uo/U, exp ressed in volts:  
Uo being the r.m.s. value between any insulated conductor and "earth" (metal covering of the 
cable or the surrounding medium);  
U being the r.m.s. value between any two -phase conductors of a multicore cable or of a 
system of single -core cab les. 
In an alternating current system, the rated voltage of a cable shall be at least equal to the 
nominal voltage of the system for which it is intended.  
This condition applies both to the value Uo and to the value U. 
In a direct current system, the nomin al voltage of the system shall be not higher than 1,5  times 
the rated voltage of the cable.  
NOTE  The operating voltage of a system may permanently exceed the nominal voltage of such a system by 10 %. 
A cable can be used at a 10 % higher operating voltage than its rated voltage if the latter is at least equal to the 
nominal voltage of the system.  
3 Mark ing 
3.1 Indication of origin and cable identification  
Cables shall be provided with an indication of the manufacturer, which shall be either an 
identification thread or a repetitive marking of the manufacturer's name or trade -mark.  
Cables for use at a con ducto r temperature exceeding 70  °C shall also be marked either with 
the code designation or with the maximum conductor temperature.  
Marking may be by printing or by reproduction in relief on or in the insulation or sheath.  
3.1.1  Continuity of marks  
Each specified mar k shall be regarded as continuous if the distance between the end of the 
mark and the beginning of the next identical mark does not exceed  
– 550 mm if the marking is on the outer sheath of the cable;  
– 275 mm if the marking is  
a) on the insulation of an un sheathed cable;  
b) on the insulation of a sheathed cable;  
c) on a tape within a sheathed cable.  
3.2 Durability  
Printed markings shall be durable. Compliance with this requirement shall be checked by the 
test given in 1.8 of IEC 60227 -2. 
3.3 Legibility  
All markings  shall be legible.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
9 
 The colours of the identification threads shall be easy to recognize or easily made 
recognizable, if necessary, by cleaning with petrol or other suitable solvent.  
4 Core identification  
Each core shall be identified as follows:  
– in cables having up to and including five cores by colour, see 4.1;  
– in cables having more than five cores by number, see 4.2.  
NOTE  The colour scheme, and in particular the scheme for rigid multicore cables, is under consideration.  
4.1 Core identification by colours  
4.1.1  General requirements  
Identification of the cores of a cable shall be achieved by the use of coloured insulation or 
other sui table method.  
Each core of a cable shall have only one colour, except the core identified by a combination of 
the colours green -and-yellow.  
The colours green and yellow, when not in combination , shall not be used for any multicore 
cable.  
NOTE  The colours re d and  white should preferably be avoided.  
4.1.2  Colour scheme  
The preferred colour scheme for flexible cables and single -core cables is:  
– single -core cable:  no preferred colour scheme;  
– two-core cable:  no preferred colour scheme;  
– three -core cable:  either gre en-and-yellow , blue, brown , 
 or, brown , black , grey 
– four-core cable:  either green -and-yellow , brown, black , grey, 
 or blue , brown,  black , grey 
– five-core cable:  either green -and-yellow , blue, brown, black , grey, 
 or blue, brown, black , grey, black . 
The colours shall be clearly identifiable and durable. Durability shall be checked by the test 
given in 1.8 of IEC 60227 -2. 
4.1.3  Colour combination green -and-yellow  
The distribution of the colours for the core coloured green -and-yellow shall comply with the 
followi ng condition (which is in accordance with IEC 60173): for every 15 mm length of core, 
one of thes e colours shall cover at least 30 % and not more than 70 % of the surface of the 
core, the other colour covering the remainder.  
NOTE  Information on the use of the colours green -and-yellow and  blue.   
It is understood that the colours green and yellow, when they are combined as specified above, are recognized 
exclusively as a means of identification of the core intended for use as earth  connection or similar protection, and 
that the colour  blue is intended for the identification of the core intended to be connected to neutral. If, however , 
there is no neutral , blue can be used to identify any core except the earthing or protective condu ctor.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
10 
 4.2 Core identification by n umbers  
4.2.1  General requirements  
The insulation of the cores shall be of the same colour and numbered sequentially, except for 
the core coloured green -and-yellow, if one is included.  
The green -and-yellow core, if any, shall comply with the requirement of 4.1.3 and shall be in 
the outer layer.  
The numbering shall start by number 1 in the inner layer.  
The numbers shall be printed in arabic numerals on the outer surfaces of the cores. All the 
numbers shall be of the same colour, which shall contrast with the colour of the insulation. The 
numerals shall be legible.  
4.2.2  Preferred arrangement of marking  
The numbers shall be repeated, at regular intervals along the core, consecutive numbers being 
inverted in relation to each other.  
When the num ber is a single numeral, a dash shall be placed underneath it. If the number 
consists of two numerals, these shall be disposed one below the other and a dash placed 
below the lower numeral. The spacing d between consecutive numbers shall not exceed  
50 mm.  
The arrangement of the marks is shown in the figure below.  
 d d 
2 1 2 1 1 
2 
IEC   2008 /07 
 
4.2.3  Durability  
Printed numerals shall be durable. Compliance with this requirement shall be checked by the 
test given in 1.8 of IEC 60227 -2. 
5 General requirements for the con struction of cables  
5.1 Conductors  
5.1.1  Material  
The conductors shall consist of annealed copper, except for the wires of tinsel cords, for which 
a copper alloy may be used. The wires may be plain or tinned.  
5.1.2  Construction  
The maximum diameters of the wires of flexib le conductors – other than the conductors of 
tinsel cords – and the minimum number of the wires of rigid conductors shall be in accordance 
with IEC 60228.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
11 
 The classes of the conductors relevant to the various types of cables are given in the particular 
specifications (see IEC 60227 -3, IEC 60227 -4, etc.).  
Conductors of cables for fixed installations shall be circular solid, circular stranded or 
compacted circular stranded conductors.  
For tinsel cords each conductor shall comprise a number of strands or group s of strands, 
twisted together, each strand being composed of one or more flattened wires of copper or 
copper alloy, helically wound on a thread of cotton, polyamide or similar material.  
5.1.3  Check on construction  
Compliance with the requirements of 5.1.1 and 5 .1.2, including the requirements of IEC 60228, 
shall be checked by inspection and by measurement.  
5.1.4  Electrical resistance  
For cables – other than tinsel cords – the res istance of each conductor at 20  °C shall be in 
accordance with the requirements of IEC 60228 for the given class of the conductor.  
Compliance shall be checked by the test given in 2.1 of IEC 60227 -2. 
5.2 Insulation  
5.2.1  Material  
The insulation shall be polyvinyl chloride compound of the type specified for each type of cable 
in the particular specificati ons (see IEC 60227 -3, IEC 60227 -4, etc.).  
Type PVC/C in the case of cables for fixed installation.  
Type PVC/D in the case of flexible cables.  
Type PVC/E in the case of heat -resistant cables for internal wiring.  
The test requirements for these compounds are  specified in Table 1. 
The maximum operating temperatures for cables insulated with any of the above types of 
compound and covered by the particular specifications (see IEC 60227 -3, IEC 60227 -4, etc.) 
are given in those publications.  
5.2.2  Application to the con ductor  
The insulation shall be so applied that it fits closely on the conductor, but for cables other than 
tinsel cords, it shall be possible to remove it without damage to the insulation itself, to the 
conductor or to the tin coating if any. Compliance sh all be checked by inspection and by 
manual test.  
5.2.3  Thickness  
The mean value of the thickness of insulation shall be not less than the specified value for 
each type and size of cable shown in the tables of the particular specifications ( IEC 60227 -3, 
IEC 60227 -4, etc.).  
However, the thickness at any place may be less than the specified value provided that the 
difference does not exceed 0,1 mm + 10 % of the specified value.  
Compliance shall be checked by the test given in 1.9 of IEC 60227 -2. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
12 
 5.2.4  Mechanical propertie s before and after ageing  
The insulation shall have adequate mechanical strength and elasticity within the temperature 
limits to which it may be exposed in normal use.  
Compliance shall be checked by carrying out the tests specified in Table 1. 
The applicab le test methods and the results to be obtained are specified in Table 1. 
Table 1 – Requirements for the non -electrical tests for polyvinyl chloride (PVC) 
insulation  
1 2 3 4 5 6 7 
Reference  
No. Test  Unit  Type of component  Test method  
described in  
   PVC/C  PVC/D  PVC/E  IEC subclause  
1 Tensile st rength and 
elongation at break      60811 -1-1 9.1 
1.1 Properties in the state as 
delivered        
1.1.1  Values to be obtained for the 
tensile strength:  
– median, min.   
 
N/mm2  
 
12,5   
 
10,0   
 
15,0    
1.1.2  Values to b e obtained for the 
elongation at break:  
– median, min.   
 
%  
 
125  
 
150  
 
150   
1.2 Properties after ageing in air 
oven      60811 -1-2 
and 8.1.3.1  
and 
1.2.1  Ageing conditions:  
– temperature  
– duration of treatment   
°C 
h  
80 ± 2  
7  24  
80 ± 2  
7  24  
135 ±  2 
10  24 60811 -1-1 9.1 
1.2.2  Values to be obtained for the 
tensile strength:  
– median, min.  
– variation 1), max.   
 
N/mm2 
%  
 
12,5  
±20  
 
10,0  
±20  
 
15,0  
±25   
1.2.3  Values to be obtained for the 
elongation at break:  
– median, min.  
– variation 1), max.   
 
% 
%  
 
125 
±20  
 
150 
±20  
 
150 
±25   
2 Loss of mass test      60811 -3-2 8.1 
2.1 Ageing conditions:  
– temperature  
– duration of treatment   
°C 
h  
80 ± 2  
7  24  
80 ± 2  
7  24  
115 ± 2  
10  24   
2.2 Values to be obtained for the 
loss of mass, max.   
mg/cm2  
2,0  
2,0  
2,0   
3 Compatibility test  2)       
3.1 Ageing conditions  °C 
h 80 ± 2  
7  24 80 ± 2  
7  24 100 ± 2  
10  24 60811 -1-2 8.1.4  
3.2 Mechanical properties after 
ageing  
Values to be obtained   As in references  
Nos. 1.2.2 and 1.2.3    
4 Heat shock tes t     60811 -3-1 9.1 
4.1 Test conditions:  
– temperature  
– duration of treatment   
°C 
h  
150 ± 2  
1  
150 ± 2  
1  
150 ± 2  
1   
4.2 Results to be obtained   Absence of cracks    
1) Variation: difference between the median value after ageing and the median value w ithout ageing, expressed as 
a percentage of the latter.  
2) If applicable, see 5.3.1.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
13 
 Table 1  (continued ) 
1 2 3 4 5 6 7 
Reference  
No. Test  Unit  Type of component  Test method  
described in  
   PVC/C  PVC/D  PVC/E  IEC subclause  
5 Pressure test at high 
tempera ture     60811 -3-1 8.1 
5.1 Test conditions:  
– force exercised by the blade  
– duration of heating under 
load  
See 8.1.4 of IEC 60811 -3-1 
See 8.1.5 of IEC 60811 -3-1   
 – temperature  °C 80 ± 2  70 ± 2  90 ± 2    
5.2 Results to be obtained:  
– median of the dep th of 
penetration, max.   
 
%  
 
50  
 
50  
 
50   
6 Bending test at low 
temperature      60811 -1-4 8.1 
6.1 Test conditions:  
– temperature 1)  
°C  
–15 ± 2   
–15 ± 2   
–15 ± 2    
 – period of application of low 
temperature  See 8.1.4 and 8.1.5 of IEC 60811 -1-4   
6.2 Results to be obtained   Absence of cracks    
7 Elongation test at low 
temperature      60811 -1-4 8.3 
7.1 Test conditions:  
– temperature 1)  
°C  
–15 ± 2   
–15 ± 2   
–   
 – period of application of low 
temperature  See 8.3.4 and 8.3.5 of IEC 60811 -1-4   
7.2 Result to be obtained:  
– elongation without break, 
min.   
%  
20  
20  
–   
8 Impact test at low  
temperature  2)     60811 -1-4 8.5 
8.1 Test conditions:  
– temperature 1)  
°C  
–15 ± 2   
–15 ± 2   
–   
 – period of application of low 
temperature  See 8.5.5 of IEC 60811 -1-4   
 – mass of hammer  See 8.5.4 of IEC 60811 -1-4   
8.2 Results to be obtained  See 8.5.6 of IEC 60811 -1-4   
9 Thermal stability test    60811 -3-2 9 
9.1 Test conditions:  
– temperature   
°C  
–  
–  
200 ± 0,5    
9.2 Result to be obtained:  
– mean valu e of the thermal 
stability time, min.   
 
min  
 
–  
 
–  
 
180   
1) Due to climatic conditions, national standards may require a lower test temperature to be used.  
2) If specified in the particular specifications ( IEC 60227 -3, IEC 60227 -4, etc.).  
 
5.3 Filler  
5.3.1  Mate rial 
Unless otherwise specified in the particular specifications ( IEC 60227 -3, IEC 60227 -4, etc.), the 
fillers shall be composed of one of the following or of any combination of the following:  
– a compound based on unvulcanized rubber of plastics; or  
– natural or synthetic textiles; or  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
14 
 – paper.  
When the filler is composed of unvulcanized rubber, there shall be no harmful interactions 
between its constituents and the insulation and/or the sheath. Compliance with this 
requirement shall be checked by the test given in 8.1.4 of IEC 60811 -1-2. 
5.3.2  Application  
For each type of cable, the particular specifications ( IEC 60227 -3, IEC 60227 -4, etc.) specify 
whether that cable includes fillers or whether the sheath or inner covering may penetrate 
between the cores, thus fo rming a filling.  
The fillers shall fill the spaces between the cores giving the assembly a practically circular 
shape. The fillers shall not adhere to the cores. The assembly of cores and fillers may be held 
together by a film or tape.  
5.4 Extruded inner cover ing 
5.4.1  Material  
Unless otherwise specified in the particular specifications ( IEC 60227 -4, etc.), the extruded 
inner covering shall be composed of a compound based on unvulcanized rubber or plastics.  
Where the inner covering is composed of unvulcanized rubber,  there shall be no harmful 
interactions between its constituents and the insulation and/or the sheath.  
Compliance with this requirement shall be checked by the test given in 8.1.4 of IEC 60811 -1-2. 
5.4.2  Application  
The extruded inner covering shall surround the  cores and may penetrate the spaces between 
them giving the assembly a practical circular shape. The extruded inner covering shall not 
adhere to the cores.  
For each type of cable, the particular specifications ( IEC 60227 -4, etc.) indicate whether that 
cable includes an extruded inner covering or not, or whether the outer sheath may penetrate 
between the cores, thus forming a filling.  
5.4.3  Thickness  
Unless otherwise specified in the particular specifications ( IEC 60227 -4, etc.), no measurement 
is required for the  extruded inner covering.  
5.5 Sheath  
5.5.1  Material  
The sheath shall be polyvinyl chloride compound of the type specified for each type of cable in 
the particular specifications (see IEC 60227 -4, etc.):  
– type PVC/ST4 in the case of cables for fixed installations;  
– type PVC/ST5 in the case of flexible cables;  
 type PVC/ST9 in case o f oil-resistant flexible cables;  
– type PVC/ST10 in the case of cables sheathed with a 90° polyvinyl chloride compound.  
The test requirements for these compounds are specified in Table 2. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
15 
 5.5.2  Application  
The sheath shall be extruded in a single layer:  
a) on the core, in the case of single -core cables;  
b) on the assembly of cores and fillers or inner covering, if any, in the case of other cables.  
The sheath shall not adhere to the cores. A sep arator, consisting of a film or tape, may be 
placed under the sheath.  
In certain cases, indicated in the particular specifications ( IEC 60227 -4, etc.), the sheath may 
penetrate into the spaces between the cores, thus forming a filling (see 5.4.2).  
5.5.3  Thicknes s 
The mean value of the thickness shall not be less than the specified value for each type and 
size of cable shown in the tables of the particular specifications ( IEC 60227 -4, etc.).  
However, the thickness at any place may be less than the specified value provided that the 
difference does not exceed 0,1 mm + 15 % of the specified value, unless otherwise specified.  
Compliance shall be checked by the test given in 1.10 of IEC 60227 -2. 
5.5.4  Mechanical properties before and after ageing  
The sheath shall have adequat e mechanical strength and elasticity within the temperature 
limits to which it may be exposed in normal use.  
Compliance shall be checked by carrying out the tests specified in Table 2. 
The applicable test values and the results to be obtained are specified  in Table 2. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
16 
 Table 2 – Requirements for the non -electrical test for polyvinyl chloride (PVC) sheaths  
1 2 3 4 5 6 7 8 
Reference  
No. Test  Unit  Type of compound  Test method 
described in  
   PVC/  
ST4 PVC/  
ST5 PVC/  
ST9 PVC/  
ST10  IEC clause/  
subclause  
1 
 
1.1 
1.1.1  
 
 
1.1.2  
 
 
1.2 
 
1.2.1  
 
 
1.2.2  
 
 
 
1.2.3  
 
 
 
2 Tensile strength and elongation  
at break  
Properties in the state as delivered  
Values to be obtained for the tensile 
strength:  
– median, min.  
Values to be obtained for the 
elongation at break  
– median, min.  
Properties after ageing in the air oven  
 
Ageing conditions:  
– temperature  
– duration of treatment  
Values to be obtained for the tensile 
strength:  
– median, min.  
– variation1), max.  
Values to be obtained for the  
elongation at break:  
– median, min.  
– variatio n1), max.  
Loss of mass test   
 
 
 
 
N/mm2 
 
 
% 
 
 
 
°C 
h 
 
 
N/mm2 
% 
 
 
% 
% 
  
 
 
 
 
12,5  
 
 
125 
 
 
 
80 ± 2  
7  24 
 
 
12,5  
±20 
 
 
125 
±20 
  
 
 
 
 
10,0  
 
 
150 
 
 
 
80 ± 2  
7  24 
 
 
10,0  
±20 
 
 
150 
±20 
  
 
 
 
 
10,0  
 
 
150 
 
 
 
80 ± 2  
7  24 
 
 
10,0  
±20 
 
 
150 
±20 
  
 
 
 
 
10, 0  
 
 
150 
 
 
 
135 ± 2  
10  24 
 
 
10,0  
±25 
 
 
150 
±25 
 60811 -1-1 
 
 
 
 
 
 
 
 
60811 -1-2 
 
60811 -1-1 
 
 
 
 
 
 
 
 
 
 
60811 -3-2 9.2 
 
 
 
 
 
 
 
 
8.1 
 
9.2 
 
 
 
 
 
 
 
 
 
 
8.2 
2.1 Ageing conditions:  
– temperature  
– duration of treatment   
°C 
h  
As in reference No. 1.2.1   
115 ± 2  
10  24   
2.2 
 
3 Values to be obtained for the loss of 
mass, max.  
Compatibility test  2) mg/cm2 2,0 2,0 2,0 2,0  
 
60811 -1-2  
 
8.1.4  
3.1 Ageing conditions:  
– temperature  
– duration of treatment   
°C 
h  
As in reference No. 1.2.1   
100 ± 2  
10  24   
3.2 Mechanical properties af ter ageing  
Values to be obtained   As in references Nos. 1.2.2  
and 1.2.3    
4 
4.1 Heat shock test  
Test conditions:  
– temperature  
– duration of treatment   
 
°C 
h  
 
150 ± 2  
1  
 
150 ± 2  
1  
 
150 ± 2  
1  
 
150 ± 2  
1 60811 -3-1 9.2 
4.2 Result to be obtained   Absence  of cracks    
1) Variation: difference between the median value after ageing and the median value without ageing, expressed as a 
percentage of the latter.  
2) Only applicable when called up by the particular cable standard, see also 5.3.1. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
17 
 Table 2  (contin ued)  
1 2 3 4 5 6 7 8 
Reference  
No. Test  Unit  
Type of compound  Test method described 
in 
   PVC/  
ST4 PVC/  
ST5 PVC/  
ST9 PVC/  
ST10  IEC clause/  
subclause  
5 
5.1 
 
 
 
5.2 
 
 
6 
6.1 Pressure test at high temperature  
Test conditions:  
– force exercised by the blade  
– duration of heating under load  
– temperature  
Results to be obtained:  
– median of the depth of penetration, 
max.  
Bending test at low temperature  
Test conditions:  
– temperature1) 
– period of application of  
low temperature   
 
 
h 
°C 
 
% 
 
 
 
°C 
h  
 
 
 
80  2 
 
50 
 
 
 
–15  2  
 
 
 
70  2 
 
50 
 
 
 
–15  2 
  
 
 
 
70  2 
 
50 
 
 
 
–15  2 
  
 
 
 
90  2 
 
50 
 
 
 
–15  2 
 60811 -3-1 
 
60811 -3-1 
60811 -3-1 
 
 
 
 
60811 -1-4 
 
 
60811 -1-4 8.2 
 
8.2.4  
8.2.5  
 
 
 
8.2 
 
 
8.2.3  
6.2 Results to be obtained   Absence of cracks    
7 
7.1 
 
 
 
7.2 
 
8 
8.1 
 
 
 
 
8.2 
9 
 
9.1 
 
 
9.1.1  
 
 
9.1.2  
 
 
10 Elongation test at low temperature  
Test conditions:  
– temperature1) 
– period of application of  
low temperature  
Result to be obtained:  
– elongation without break, min.  
Impact test at low temperature  
Test conditions:  
– temperat ure1) 
– period of application of  
low temperature  
– mass of hammer  
Result to be obtained  
Mechanical properties after 
immersion in mineral oil  
Test conditions:  
– temperature of oil  
– duration of immersion in oil  
Value to be obtained for the tensile  
strength:  
– variation max.2) 
Value to be obtained for the 
elongation at break:2) 
– variation max.  
Minimum thermal stability at 200 °C   
 
°C 
h 
 
 
% 
 
 
°C 
h 
 
 
 
 
 
 
°C 
h 
 
 
% 
 
 
% 
min  
 
–15  2 
 
 
 
20 
 
 
–15  2 
 
 
 
 
 
 
 
– 
– 
 
 
– 
 
 
– 
 
–  
 
–15  2 
 
 
 
20 
 
 
–15  2 
 
 
 
 
 
 
 
– 
– 
 
 
– 
 
 
– 
 
–  
 
–15  2 
 
 
 
20 
 
 
–15  2 
 
 
 
 
 
 
 
90  2 
24 
 
 
30 
 
 
30 
 
–  
 
–15  2 
 
 
 
20 
 
 
–15  2 
 
 
 
 
 
 
 
– 
– 
 
 
– 
 
 
– 
 
180 60811 -1-4 
 
 
60811 -1-4 
 
 
 
60811 -1-4 
 
 
60811 -1-4 
 
60811 -1-4 
60811 -1-4 
60811 -2-1 
 
 
 
 
 
 
 
 
 
 
 
60811 -3-2 8.4 
 
 
    8.4.4 
and 
    8.4.5  
 
8.5 
 
 
8.5.5  
 
8.5.4  
8.5.6  
    10 
 
 
 
 
 
 
 
 
 
 
    9 
1) Due to climatic conditions, national standards may require the use of a lower test temperature.  
2) Variation is the difference between the median value after ageing and the median value without ageing, expressed as a  
percentage of the latter. 
5.6 Tests on completed cables  
5.6.1  Electrical properties  
The cables shall have adequate dielectric strength and insulation resistance.  
Compliance shall be checked by carrying out the tests specified in Table 3. 
The test methods and the r esults to be obtained are specified in Table 3. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
18 
 Tabl e 3 – Requirements for electrical tests for PVC insulated cables  
1 2 3 4 5 6 7 
Reference  
No. Test  Unit  Rated voltage of cables  Test method  
described in  
   300/  
300 V  300/  
500 V  450/  
750 V  IEC subclause  
1 Measurement of the resistance 
of conductors      60227 -2 2.1 
1.1 Values to be obtained, max.   See IEC 60228 and particular 
specifications  
(IEC 60227 -3, IEC 60227 -4, 
etc.)    
2 Voltage test on completed 
cables      60227 -2 2.2 
2.1 Test conditions:  
– minimum length of the 
sample  
– minimum period of 
immersion in water  
– temperature of the water   
m 
 
 
h 
°C  
10 
 
 
1 
20 ± 5   
10 
 
 
1 
20 ± 5   
10 
 
 
1 
20 ± 5    
2.2 Voltage applied (a.c.)  V 2 000  2 000  2 500    
2.3 Duration of each application of 
voltage, min.   
min  
5  
5  
5   
2.4 Results to be obtained   No breakdown    
3 Voltage test on cores      60227 -2 2.3 
3.1 Test conditions:  
– length of sample  
– minimum period of 
immersion in water  
– temperature of the water   
m 
h 
 
°C  
5 
1 
 
20 ± 5   
5 
1 
 
20 ± 5   
5 
1 
 
20 ± 5    
3.2 Applied voltage (a.c.) 
according to specified 
thickness of insulation:  
– up to and incl uding 0,6 mm  
– exceeding 0,6 mm   
 
 
V 
V  
 
 
1 500  
2 000   
 
 
1 500  
2 000   
 
 
– 
2 500    
3.3 Duration of each application of 
voltage, min.  min 5 5 5   
3.4 Results to be obta ined  No breakdown    
4 Measurement of insulation 
resistance      60227 -2 2.4 
4.1 Test conditions:  
– length of sample  
– previous voltage test as in 
Ref. Nos. 2 or 3  
– minimum period of 
immersion in hot water   
m 
 
 
h  
5 
 
 
2  
5 
 
 
2  
5 
 
 
2   
 – temperature of  water   See tables in the particular 
specifications    
4.2 Results to be obtained   (IEC 60227 -3, IEC 60227 -4, 
etc.)    
 
5.6.2  Overall dimensions  
The mean overall dimensions of the cables shall be within the limits specified in the tables in 
the particular specif ications (see IEC 60227 -3, IEC 60227 -4, etc.).  
The difference between any two values of the overall diameter of sheathed circular cables of 
the same cross -section (ovality) shall not exceed 15 % of the upper limit specified for the mean 
overall diameter.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
19 
 Compliance shall be checked by the tests given in 1.11 of IEC 60227 -2. 
5.6.3  Mechanical strength of flexible cables  
The flexible cables shall be capable of withstanding bending and other mechanical stresses 
occurring in normal use.  
When specified in the particula r specifications (see IEC 60227 -5, etc.), compliance shall be  
checked by the test given in Clause 3 of IEC 60227 -2. 
5.6.3.1  Flexing test for flexible cables  
See 3.1 of IEC 60227 -2. 
During the test with 15 000 backward and forward movements, i.e. 30 000 single stro kes, 
neither interruption of the current nor short circuit between the conductors shall occur.  
After the test, the sample shall withstand the voltage test carried out in accordance with 2.2 of 
IEC 60227 -2. 
5.6.3.2  Bending test for tinsel cord  
See 3.2 of IEC 60227 -2. 
During the test with 60 000 bending cycles, i.e. 120 000 single strokes, interruption of the 
current shall not occur.  
After the test, the sample shall withstand the voltage test carried out in accordance with 2.2 of 
IEC 60227 -2, the voltage, however, be ing 1  500 V and applied only between the conductors 
connected together and the water.  
5.6.3.3  Snatch test for tinsel cord  
See 3.3 of IEC 60227 -2. 
During the test, interruption of the current shall not occur.  
5.6.3.4  Test for separation of cores  
See 3.4 of IEC 60227 -2. 
The force shall be between 3 N and 30 N.  
5.6.4  Flame retardance  
All the cables shall comply with the test specified in IEC 60332 -1-2. 
6 Guide to use of the cables  
See the future IEC 62440.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
20 
 Annex  A  
(normative)  
 
Code designation  
 
Cables of the types covered by this standard a re designated by two numerals, preceded by the 
reference number of this standard.  
The first numeral indicates the basic class of cable; the second numeral indicates the particular  
type within the basic class.  
The classes and types are as follows:  
0. Non-sheathed cables for fixed wiring.  
01.  Single -core non -sheathed cable with rigid conductor for general purposes 
(60227  IEC 01).  
02. Single -core non -sheathed cable with flexible conductor for general purposes 
(60227 IEC 02).  
05. Single -core non -sheathed cable  with solid conductor for internal wiring for a 
conductor temperature of 70  °C (60227 IEC 05).  
06. Single -core non -sheathed cable with flexible conductor for internal wiring for a 
conductor temperature of 70 °C (60227 IEC 06).  
07. Single -core non -sheathed cable with solid conductor for internal wiring for a 
conductor temperature of 90 °C (60227 IEC 07).  
08. Single -core non -sheathed cable with flexible conductor for internal wiring for a 
conductor temperature of 90 °C (60227 IEC 08).  
1. Sheathed cables for f ixed wiring.  
10. Light polyvinyl chloride sheathed cable (60227 IEC 10).  
4. Non-sheathed flexible cables for light duty.  
41. Flat tinsel cord (60227 IEC 41).  
43. Cord for decorative chains (60227 IEC 43).  
5. Sheathed flexible cables for normal duty.  
52. Light polyvinyl chloride sheathed cord (60227 IEC 52).  
53. Ordinary polyvinyl chloride sheathed cord (60227 IEC 53).  
7. Sheathed flexible cables for special duty.  
71c Circular polyvinyl chloride sheathed lift cable and cable for flexible connections 
(60227 I EC 71c).  
71f Flat polyvinyl chloride sheathed lift cables and cables for flexible connections 
(60227 IEC 71f).  
 
___________  
 
 
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
21 
 Annex AA  
(normative)  
 
National Modifications  
 
This annex is National modifications which replaces the requirements of IEC 60227 -1 clause 2 
(Definitions) and clause 3 (Marking) by the following:  
 
2  Definitions  
 
For the purpose of this standard the following definitions shall apply.  
 
2.1  Definitions relating to insulating sheathing materials  
 
2.1.1  Polyvinyl chloride compound (PVC)  
 
Combination of materials suitably selected, proportioned and treated, of which the 
characteristic constituent is the plastomer polyvinyl chloride or one of its copolymers. The 
same term also designates compounds containing both polyvinyl chloride and cer tain of its 
polymers.  
 
2.1.2  Type of compound  
 
The category in which a compound is placed according to its properties, as determined by 
specific tests. The type designation is not directly related to the composition of the compound.  
 
2.2  Definitions rela ting to the tests  
 
2.2.1  Type tests (symbol T)  
 
Tests required to be made before supplying a type of cable covered by this standard on a 
general commercial basis in order to demonstrate satisfactory performance characteristics to 
meet the intended applica tion. These tests are of such a nature that, after they have been 
made, they need not be repeated unless changes are made in the cable materials or design 
which might change the performance characteristics.  
 
2.2.2  Sample tests (symbol S)  
 
Tests made on sa mples of completed cable or components taken from a completed cable, 
adequate to verify that the finished product meets the design specifications.  
 
2.3  Rated voltage  
 
The rated voltage of a cable is the reference voltage for which the cable is designed an d which 
serves to define the electrical tests.  
 
The rated voltage is expressed by the combination of two values Uo/U , expressed in volts:  
 
Uo    being the r.m.s. value between any insulated conductor and "earth" (metal covering of the 
cable or the surround ing medium);  
 
U    being the r.m.s. value between any two -phase conductors of a multicore cable or of a 
system of single -core cables.  
 
In an alternating current system, the rated voltage of a cable shall be at least equal to the 
nominal voltage of the syst em for which it is intended.  
This condition applies both to the value Uo and to the value U. SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
22 
 In a direct current system, the nominal voltage of the system shall be not higher than 1,5 times 
the rated voltage of the cable.  
NOTE The operating voltage of a sy stem may permanently exceed the nominal voltage of such a system by 10 %. A 
cable can be used at a 10 % higher operating voltage than its rated voltage if the latter is at least equal to the 
nominal voltage of the system.  
When only one voltage is mentioned , it is considered as the value of U 
 
2.4 Additional wires types definitions:  
 
2.4.1  THHN  
 
THHN  stands for: Thermoplastic  High  Heat -resistant  Nylon -jacketed wire.  
 
2.4.2  THWN    
 
THWN  stands for: Thermoplastic  Heat and water -resistant  Nylon -jacketed wire.  
 
2.4.3  TFFN    
 
TFFN  stands for: Thermoplastic Flexible Fixture Nylon -jacketed wire.  
 
3 Marking  
 
3.1  Indication of origin and cable identification  
 
Cables shall be provided with an indication of the manufacturer, which shall be either an 
identification thr ead or a repetitive marking of the manufacturer's name or trade -mark.  
Wires and cables to be marked either with the code designation or with the maximum 
conductor temperature.  
Marking may be by printing or by reproduction in relief on or in the insulation or sheath.  
 
 
3.1.1 Product surface marking  
 
The following details should be marked on cables and wires surface:  
 
- Identification of the manufacturer  
- Code designation or the maximum conductor temperature  
- Voltage rating  
- Conductor material  
- Conductor size  
- Numbe r of cores (in multicores products)  
- Country of origin  
 
3.1.1.1  Continuity of marks  
 
Each specified mark shall be regarded as continuous if the distance between the end of the 
mark and the beginning of the next identical mark does not exceed:  
 
- 550 mm if th e marking is on the outer sheath of the cable;  
- 275 mm if the marking is  
a) on the insulation of an unsheathed cable;  
b) on the insulation of a sheathed cable;  
c) on a tape within a sheathed cable.  
 
 
 
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
23 
  
 
3.1.2  Product packaging marking  
 
The following details should  be marked on the product packaging:  
 
- Identification of the manufacturer  
- Code designation or the maximum conductor temperature  
- Voltage rating  
- Conductor material  
- Conductor size  
- Number of cores (in multicores products)  
- Country of origin  
- Manufacturing year an d month  
- Length in meters.  
 
 
3.2  Durability  
 
Printed markings shall be durable. Compliance with this requirement shall be checked by the 
test given in 1 .8 of SASO IEC 60227 -2. 
 
3.3  Legibility  
 
All markings shall be legible.  
The colours of the identificati on threads shall be easy to recognize or easily made 
recognizable, if necessary, by cleaning with petrol or other suitable solvent.  SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
24 
  
Annex AB  
(normative )  
 
National Modifications  
This annex is N ational modifications which remove  Annex A from IEC 60227 -1:2007 and replace it by 
annex AB  to include additional code designations by the following:  
 
Code designation  
Cables of the types covered by this standard are designated by two numerals, preceded by the 
reference number of this standard.  
The first numeral in dicates the basic class of cable; the second numeral indicates the particular type 
within the basic class.  
The additional types are designated by  three numerals, the first number indicates the basic class of the 
cables; the second and third numerals indicate the particular type within the basic class.  
The classes and types are as follows:  
0. Non -sheathed cables for fixed wiring.  
01. Single -core non -sheathed cable with rigid conductor for general purposes (60227 IEC 01).  
02. Single -core non -sheathed cable with flexible conductor for general purposes (60227 IEC 
02). 
05. Single -core non -sheathed cable with solid conductor for internal wiring for a cond uctor 
temperature of 70 °C (60227 IEC 05).  
06. Single -core non -sheathed cable with flexible conductor for internal wiring for a conductor 
temperature of 70 °C (60227 IEC 06).  
07. Single -core non -sheathed cable with solid conductor for internal wiring for a  conductor 
temperature of 90 °C (60227 IEC 07).  
08. Single -core non -sheathed cable with flexible conductor for internal wiring for a conductor 
temperature of 90 °C (60227 IEC 08).  
083. Single -core nylon -jacketed cable with flexible conductor for internal w iring in dry and wet 
conditions for a conductor temperature of 90 °C dry and 75 °C wet (THHN/THWN UL 083).  
066. Single -core nylon -jacketed cable with flexible conductor for internal fixed wiring for a 
conductor temperature of 90 °C (TFFN UL 066).  
1. Sheath ed cables for fixed wiring.  
10. Light polyvinyl chloride sheathed cable (60227 IEC 10).  
4. Non -sheathed flexible cables for light duty.  
41. Flat tinsel cord (60227 IEC 41).  
43. Cord for decorative chains (60227 IEC 43).  
 SASO STANDARD                                        SASO/FDS/IEC 60227 -1:2020  
 
25 
 5. Sheathed flexible cables for nor mal duty.  
52. Light polyvinyl chloride sheathed cord (60227 IEC 52).  
53. Ordinary polyvinyl chloride sheathed cord (60227 IEC 53).  
7. Sheathed flexible cables for special duty.  
 71c Circular polyvinyl chloride sheathed lift cable and cable for flexible con nections (60227 IEC 
71c).  
           71f Flat polyvinyl chloride sheathed lift cables