Saudi Standards, Metrology and Quality Org (SASO)  
 
 
 
 
FINAL DRAFT  
 
SASO/FDS/IEC 60227 -3:2020  
IEC 60227 -3:19 97  
 
Polyvinyl chloride insulated cables of rated voltages up to a nd 
including 450/750 V - Part 3 : Non -sheathed cables for fixed wiring  
 
 
ICS:  29.060.20   
THIS DOCUMENT IS A DRAFT SAUDI STANDARD CIRCULATED FOR 
COMMENT. IT IS, THEREFORE SUB JECT 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 -3:2020  
1  Foreword   
Saudi Standards, Metrology and Quality Organization (SASO) has adopted Standard 
No. (IEC 60227 -3:1997 ) “Polyvinyl chloride insulated cables of rated voltages up to 
and including 450/750 V – Part 3: Non -sheathed cables for fixed wiring " issued by 
(IEC) in English. This standard has been approved as a Saudi Standard with national 
modifications.  
This SASO IEC 60227 -3:2020 standard is a modified adoption of Int ernational 
Standard IEC 60 227-3:1997, (Polyvinyl chloride insulated cables of rated voltages up 
to and including 450/750 V – Part 3: Non -sheathed cables for fixed wiring). Standard 
has been varied as indicated to take account of Kingdom of S audi Arabia conditions. 
The modifications are specified in Annex AA.  
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
2 CONTENTS  
 
  Page 
FOREWORD  ................................ ................................ ................................ ....................   5 
 
Clause  
1  General  ................................ ................................ ................................ .....................   4 
2  Single -core non -sheathed cable with rigid conductor for gen eral purposes  ..................   5 
3  Single -core non -sheathed cable with flexible conductor for general purposes  .............   7 
4  Single -core non -sheathed cable with solid conductor for internal wiring for  
a conductor temperature of 70 °C  ................................ ................................ ..............   19 
5  Single -core non -sheathed cable with flexible conductor for internal wiring for  
a conductor temperature of 70 °C  ................................ ................................ ..............   23 
6  Single -core non -sheathed cable with solid conductor for interna l wiring for  
a conductor temperature of 90 °C  ................................ ................................ ..............   27 
7  Single -core non -sheathed cable with flexible conductor for internal wiring  
for a conductor temperature of 90 °C  ................................ ................................ .........   31 
 
  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
3 INTERNATIONAL ELECTRO TECHNICAL COMMISSION  
__________  
POLYVINYL CHLORIDE INSULATED CABLES  
OF RATED VOLTAGES UP TO AND  
INCLUDING 450/750 V – 
Part 3: Non -sheathed cables for fixed wiring  
 
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 Int ernational 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 ag reements 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 hav e the form of recommendations for international use and are published in the form 
of standards, technical reports or guides and they are accepted by the National Committees in that sense.  
4) In order to promote international unification, IEC National Commi ttees 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 
indicat ed 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 eleme nts 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.  
This part of International Standard IEC  60227 has been prepared by sub -committee 20B: Low -
voltage c ables, of IEC technical committee 20: Electric cables.  
This consolidated version of IEC 60227 -3 consists of  the second edition (1993) [documents 
20B(CO)115 and 20B(CO)124] and its amendment 1 (1997) [documents 20B/226/FDIS 
and 20B/250/RVD].  
The technical c ontent is therefore identical to the base edition and its amendment and has 
been prepared for user convenience.  
It bears the edition number 2.1.  
A vertical line in the margin shows where the base publication has been modified by 
amendment 1.  
IEC 60227 cons ists of the  following parts, under the general title: Polyvinyl chloride insulated 
cables of rated voltages up to and including 450/750 V:  
Part 1:   General requirements  
Part 2:   Test methods  
Part 3:   Non-sheathed cables for fixed wiring  
Part 4:   Sheathed c ables for fixed wiring  
Part 5:   Flexible cables (cords)  
Part 6:   Lift cables and cables for flexible connections  
Part 7:   Flexible cables screened and unscreened with two or more conductors.  
This part, in conjunction with parts 1 and 2, forms the complete standard for non -sheathed 
cables for fixed wiring.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
4 POLYVINYL CHLORIDE INSULATED CABLES  
OF RATED VOLTAGES UP TO AND  
INCLUDING 450/750 V – 
Part 3: Non -sheahed cables for fixed wiring  
 
1 General  
1.1 Scope  
This part of IEC  60227 details the particular specification s for polyvinyl chloride insulated 
single -core non -sheathed cables for fixed wiring of rated voltages up to and including 450/750 V.  
All cables shall comply with the appropriate requirements given in IEC  60227 -1 and the 
individual types of cables shall eac h comply with the particular requirements of this part.   
 
1.2 Normative references  
The following normative documents contain provisions which, through reference in this text, 
constitute provisions of this part of IEC  60227. At the time of publication, the edit ions indicated 
were valid. All normative documents are subject to revision and parties to agreements based 
on this part of IEC  60227 are encouraged to investigate the possibility of  applying the most 
recent editions of the normative documents listed below.  Members of IEC  and ISO maintain 
registers of currently valid International Standards.  
IEC 60227 -1:1993, Polyvinyl chloride insulated cables of rated voltage up to and including 
450/750 V – Part 1: General requirements *  
IEC 60227 -2:1979, Polyvinyl chlorid e insulated cables of rated voltage up to and including 
450/750 V – Part 2: Test methods * 
IEC 60228:1978, Conductors of insulated cables   
First supplement 60228A (1982), amendment 1 (1993)  
IEC 60332 -1:1979, Tests on electric cables under fire conditions – Part 1: Test on a single 
vertical insulated wire or cable  
IEC 60811 -1-1:1993, Common test methods for insulating and sheathing materials of electric 
cables – Part 1: Methods for general application – Section One: Measurement of  thickness and 
overall dimens ions – Tests for determining the mechanical properties   
Amendement 1 (1988). Amendment 2 (1989)  
IEC 60811 -1-2:1985, Common test methods for insulating and sheathing materials of electric 
cables – Part 1: Methods for general application – Section Two: Therm al ageing methods  
Amendment 1 (1989)  
IEC 60811 -1-4:1985, Common test methods for insulating and sheathing materials of electric 
cables – Part 1: Methods for general application – Section Four: Tests at low temperature  
________  
*   Revised edition to be published.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
5 IEC 60811 -3-1:1985, Common test method s 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 -3-2:1985, Common test methods for insulating and sheathing  materials of electric 
cables – Part 3: Methods specific to PVC compounds – Section Two: Loss of mass test – 
Thermal stability tests  
2 Single -core non -sheathed cable with rigid conductor for general purposes  
2.1 Code designation  
60227 IEC 01.  
2.2 Rated voltage  
450/7 50 V.  
2.3 Construction  
2.3.1  Conductor  
Number of conductors: 1.  
The conductors shall comply with the requirements of IEC  60228:  
– class 1 for solid conductors;  
– class 2 for stranded conductors.  
2.3.2  Insulation  
The insulation shall be polyvinyl chloride compound of Type PVC/C applied around the 
conductor.  
The insulation thickness shall comply with the specified value given in column 3 of table 1.  
The insulation resistance shall be not less than the values given in colum 5 of table 1.  
2.3.3  Overall diameter  
The mean overall diam eter shall not exceed the upper limit given in column 4 of table 1.  
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
6 Table 1 – General data for type 60227 IEC 01  
1 2 3 4 5 6 
Nominal cross -
sectional area of 
conductor  Class of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum insulation  
resistance  
at 70 °C  
 
mm2 IEC 60228  Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
1,5 
1,5 
2,5 
2,5 
 
4 
4 
6 
6 
 
10 
10 
16 
 
25 
35 
50 
 
70 
95 
120 
 
150 
185 
240 
 
300 
400 
  
1 
2 
1 
2 
 
1 
2 
1 
2 
 
1 
2 
2 
 
2 
2 
2 
 
2 
2 
2 
 
2 
2 
2 
 
2 
2  
0,7 
0,7 
0,8 
0,8 
 
0,8 
0,8 
0,8 
0,8 
 
1,0 
1,0 
1,0 
 
1,2 
1,2 
1,4 
 
1,4 
1,6 
1,6 
 
1,8 
2,0 
2,2 
 
2,4 
2,6  
2,6 
2,7 
3,2 
3,3 
 
3,6 
3,8 
4,1 
4,3 
 
5,3 
5,6 
6,4 
 
8,1 
9,0 
10,6 
 
12,1 
14,1 
15,6 
 
17,3 
19,3 
22,0 
 
24,5 
27,5  
3,2 
3,3 
3,9 
4,0 
 
4,4 
4,6 
5,0 
5,2 
 
6,4 
6,7 
7,8 
 
9,7 
10,9 
12,8 
 
14,6 
17,1 
18,8 
 
20,9 
23,3 
26,6 
 
29,6 
33,2  
  0,011  
  0,010  
  0,010  
  0,009  
 
0,0085  
0,0077  
0,0070  
0,0065  
 
0,0070  
0,0065  
0,0050  
 
0,0050  
0,0043  
0,0043  
 
0,0035  
0,0035  
0,0032  
 
0,0032  
0,0032  
0,0032  
 
0,0030  
0,0028  
2.4 Tests  
Compliance with the requirements of 2.3 above shall be checked by i nspection and by the tests 
given in table 2.  
2.5 Guide to use  
Maximum conductor temperature in normal use: 70 °C.  
NOTE – Other guidelines are under consideration.  
 
 
 
 
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
7  
Table 2 – Tests for type 60227 IEC 01  
1 2 3 4 
Ref. No.  Test  Category  Test method describe d in 
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 
 5.1 
 5.2 
 5.3 
 
 6 
 
 7 Electric test  
Resistance of conductors  
Voltage test at 2 500 V  
Insulation resistance at 70 °C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compliance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties of insulation  
Tensile test before ageing  
Tensile test after ageing  
Loss of mass tes t 
 
Pressure test at high temperature  
 
Elasticity and impact strength  
at low temperature  
Bending test for insulation  
Elongation test for insulation1) 
Impact test for insulation  
 
Heat shock test  
 
Test of flame retardance   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
 
T 
T 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
 
60811 -1-4 
60811 -1-4 
60811 -1-4 
 
60811 -3-1 
 
60332 -1  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3. 1 
8.1 
 
8.1 
 
 
 
8.1 
8.3 
8.5 
 
9.1 
1)  Only applicable if the overall diameter of the cable exceeds the limits specified in the test method.  
3 Single -core non -sheathed cable with flexible conductor for general purposes  
3.1 Code designation  
60227 IEC 02.  
3.2 Rated volt age 
450/750 V.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
8 3.3 Construction  
3.3.1  Conductor  
Number of conductors: 1.  
 
The conductors shall comply with the requirements given in IEC  60228 for class 5 conductors.  
3.3.2  Insulation  
The insulation shall be polyvinyl chloride compounds of type PVC/C, applied around the 
conductor.  
The insulation thickness shall comply with the specified value given in column 2 of table 3.  
 
The insulation resistance shall be not less than the value given in column 4 of table 3.  
Table 3 – General data for type 60227 IEC 02  
1 2 3 4 5 
Nomina l cross -
sectional area of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum  
insulation resistance  
at 70 °C  
 
mm2 Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
1,5 
2,5 
4 
 
6 
10 
16 
 
25 
35 
50 
 
70 
95 
120 
 
150 
185 
240 
  
0,7 
0,8 
0,8 
 
0,8 
1,0 
1,0 
 
1,2 
1,2 
1,4 
 
1,4 
1,6 
1,6 
 
1,8 
2,0 
2,2  
2,8 
3,4 
3,9 
 
4,4 
5,7 
6,7 
 
8,4 
9,7 
11,5 
 
13,2 
15,1 
16,7 
 
18,6 
20,6 
23,5  
3,4 
4,1 
4,8 
 
5,3 
6,8 
8,1 
 
10,2 
11,7 
13,9 
 
16,0 
18,2 
20,2 
 
22,5 
24,9 
28,4  
0,010  
0,009  
0,007  
 
0,006  
0,0056  
0,0046  
   
0,0044  
0,0038  
0,0037  
 
0,0032  
0,0032  
0,0029  
 
0,0029  
0,0029  
0,0028  
3.3.3  Overall diameter  
The mean overall diameter shall not exceed the upper limit given in column 3 of table 3.  
3.4 Tests  
Compliance with the requirements of 3.3 shall be checked by inspection and by the tests given 
in table 4.  
3.5 Guide to use  
Maximum conductor temperature in normal use: 70 °C.  
NOTE – Other guidelines are under consideration.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
9 Table 4 – Tests for type 60227 IEC 02  
1 2 3 4 
Ref. No.  Test  Category  Test method described in  
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 5.1 
 5.2 
 
 6 
 
 7 Electric test  
Resistance of conductors  
Voltage test at 2 500 V  
Insulation resistance at 70 °C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compli ance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties of insulation  
Tensile test before ageing  
Tensile test after ageing  
Loss of mass test  
 
Pressure test at high temperature  
 
Elastici ty at low temperature  
Bending test for insulation  
Elongation test for insulation1) 
 
Heat shock test  
 
Test of flame retardance   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
T 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
60811 -1-4 
60811 -1-4 
 
60811 -3-1 
 
60332 -1  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3.1  
8.1 
 
8.1 
 
 
8.1 
8.3 
 
9.1 
1)  Only applicable if the overall diameter of the cable exceeds the limits spec ified in the test method.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
10 4 Single -core non -sheathed cable with solid conductor for internal wiring  
  for a conductor temperature of 70 °C  
4.1 Code designation  
60227 IEC 05.  
4.2 Rated voltage  
300/500 V.  
4.3 Construction  
4.3.1  Conductor  
Number of conductors: 1.  
The conducto rs shall comply with the requirements given in IEC  60228 for class 1 conductors.  
4.3.2  Insulation  
The insulation shall be polyvinyl chloride compound of type PVC/C, applied around the 
conductor.  
The insulation thickness shall comply with the specified value give n in column 2 of table 5.  
 
The insulation resistance shall be not less than the value given in column 4 of table 5.  
 
4.3.3  Overall diameter  
The mean overall diameter shall not exceed the upper limi t given in column 3 of table 5.  
Table 5 – General data for type 60227 IEC 05  
1 2 3 4 5 
Nominal cross -
sectional area of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum  
insulation resistance  
at 70 °C   
 
mm2 Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
0,5 
0,75 
1 
  
0,6 
0,6 
0,6  
1,9 
2,1 
2,2  
2,3 
2,5 
2,7  
0,015  
0,012  
0,011  
4.4 Tests  
Compliance with the requirements of 4.3 shall be checked by inspection and by the tests given 
in table 6.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
11 4.5 Guide to use  
Maximum conductor temperature in normal use: 70 °C.  
NOTE – Other guidelines are under considerat ion. 
Table 6 – Tests for type 60227 IEC 05  
1 2 3 4 
Ref. No.  Test  Category  Test method described in  
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 5.1 
 
 6 
 
 7 Electric test  
Resistance of conductors  
Voltage tes t at 2 000 V  
Insulation resistance at 70 °C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compliance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties  of insulation  
Tensile test before ageing  
Tensile test after ageing  
Loss of mass test  
 
Pressure test at high temperature  
 
Elasticity at low temperature  
Bending test for insulation 
 
Heat shock test  
 
Test of flame retardance   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
60811 -1-4 
 
60811 -3-1 
 
60332 -1  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3.1  
8.1 
 
8.1 
 
 
8.1 
 
9.1 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
12 5 Single -core non -sheathed cable with flexible conductor for internal wiring  
  for a conductor temperature of 70 °C  
5.1 Code designation  
60227 IEC 06.  
5.2 Rated voltage  
300/500 V.  
5.3 Construction  
5.3.1  Conductor  
Number of conductors: 1.  
The conductors shall comply with t he requirements given in IEC  60228 for class 5 conductors.  
5.3.2  Insulation  
The insulation shall be polyvinyl chloride compound of type PVC/C, applied around the 
conductor.  
The insulation thickness shall comply with the specified values given in column 2 of tabl e 7. 
The insulation resistance shall be not less than the value given in column 4 of table 7.  
5.3.3  Overall diameter  
The mean overall diameter shall not exceed the upper limit given in column 3 of table 7.  
 
Table 7 – General data for type 60227 IEC 06  
1 2 3 4 5 
Nominal cross -
sectional area of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum  
insulation resistance  
at 70 °C   
 
mm2 Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
0,5 
0,75 
1 
  
0,6 
0,6 
0,6  
2,1 
2,2 
2,4  
2,5 
2,7 
2,8  
0,013  
0,011 
0,010  
5.4 Tests  
Compliance with the requirements of 5.3 shall be checked by inspection and by the tests given 
in table 8.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
13 5.5 Guide to use  
Maximum conductor temperature in normal use: 70 °C.  
NOTE – Other guidelines are under consideration.  
Table 8 – Tests f or type 60227 IEC 06  
1 2 3 4 
Ref. No.  Test  Category  Test method described in  
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 5.1 
 
 6 
 
 7 Electric test  
Resistance of conductors  
Voltage test at 2 000 V  
Insulatio n resistance at 70 °C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compliance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties of insulation  
Tensile  test before ageing  
Tensile test after ageing  
Loss of mass test  
 
Pressure test at high temperature  
 
Elasticity at low temperature  
Bending test for insulation 
 
Heat shock test  
 
Test of flame retardance   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
60811 -1-4 
 
60811 -3-1 
 
60332 -1  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3.1  
8.1 
 
8.1 
 
 
8.1 
 
9.1 
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
14 6 Single -core non -sheathed cable with solid conductor for internal wiring  
  for a conductor temperature of 90 °C  
6.1 Code designation  
60227 IEC 07.  
6.2 Rated voltage  
300/500 V.  
6.3 Construction  
6.3.1  Conductor  
Number of conductors: 1.  
The conductors shall comply with the requirements given in  IEC 60228 for class 1 conductors.  
6.3.2  Insulation  
The insulation shall be polyvinyl chloride compound of type PVC/E, applied around the 
conductor.  
The insulation thickness shall comply with the specified value given in column 2 of table 9.  
The insulation resis tance shall be not less than the value given in column 4 of table 9.  
6.3.3  Overall diameter  
The mean overall diameter shall not exceed the upper limit given in column 3 of table 9.  
Table 9 – General data for type 60227 IEC 07  
1 2 3 4 5 
Nominal cross -
sectional area of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum  
insulation resistance  
at 90 °C   
 
mm2 Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
0,5 
0,75 
1 
1,5 
2,5 
  
0,6 
0,6 
0,6 
0,7 
0,8  
1,9 
2,1 
2,2 
2,6 
3,2  
2,3 
2,5 
2,7 
3,2 
3,9  
0,015 
0,013  
0,012  
0,011  
0,009  
6.4 Tests  
Compliance with the requirements of 6.3 shall be checked by inspection and by the tests given 
in table 10.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
15 6.5 Guide to use  
Maximum conductor temperature in normal use: 90 °C.  
In circumstances in which it is possible to gua rd against thermoplastic flow, and reduced 
insulation resistance can be tolerated, PVC compound suitable for continuous use at 90  °C can 
be operated at temperatures up to 105 °C for a reduced total working duration.  
NOTE – Other guidelines are under consid eration.   
 
Table 10 – Tests for type 60227 IEC 07  
1 2 3 4 
Ref. No.  Test  Category  Test method described in  
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 5.1 
 
 6 
 
 7 
 
 8 Electric test  
Resistance of conductors  
Voltage test at 2 000 V  
Insulation resistance at 90°C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compliance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties of insulation  
Tensile test before ageing  
Tensile test after ageing  
Loss of mass test  
 
Pressure test at high temperature  
 
Elasticity at low temperature  
Bending test for insulation 
 
Heat shock test  
 
Test of flame retardance  
 
Thermal stability   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
T 
 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
60811 -1-4 
 
60811 -3-1 
 
60332 -1 
 
60811 -3-2  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3.1  
8.1 
 
8.1 
 
 
8.1 
 
9.1 
 
 
 
9 
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
16 7 Single -core non -sheathed cable with flexible conductor for internal wiring  
  for a conductor temperature of 90 °C  
7.1 Code designation  
60227 IEC 08.  
7.2 Rated voltage  
300/500 V.  
7.3 Construction  
7.3.1  Conductor  
Number of c onductors: 1.  
The conductors shall comply with the requirements given in IEC  60228 for class 5 conductors.  
7.3.2  Insulation  
The insulation shall be polyvinyl chloride compound of type PVC/E, applied around the 
conductor.  
The insulation thickness shall comply wit h the specified value given in column 2 of table  11. 
The insulation resistance shall be not less than the value given in column 4 of table 11.  
7.3.3  Overall diameter  
The mean overall diameter shall not exceed the upper limit given in column 3 of table 11.   
 
Table 11 – General data for type 60227 IEC 08  
1 2 3 4 5 
Nominal cross -
sectional area of 
conductor  Thickness of 
insulation  
  
Mean overall diameter  Minimum  
insulation resistance  
at 90 °C   
 
mm2 Specified value  
mm Lower limit  
mm Upper limit  
mm  
M·km 
 
0,5 
0,75 
1 
1,5 
2,5 
  
0,6 
0,6 
0,6 
0,7 
0,8  
2,1 
2,2 
2,4 
2,8 
3,4  
2,5 
2,7 
2,8 
3,4 
4,1  
0,013  
0,012  
0,010  
0,009  
0,009  
7.4 Tests  
Compliance with the requirements of 7.3 shall be checked by inspection and by the test given 
in table 12.  SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
17 7.5 Guide to use  
Maximum conductor temp erature in normal use: 90 °C.  
In circumstances in which it is possible to guard against thermoplastic flow, and reduced 
insulation resistance can be tolerated, PVC compound suitable for continuous use at 90  °C can 
be operated at temperatures up to 105 °C f or a reduced total working duration.  
NOTE – Other guidelines are under consideration.  
 
Table 12 – Tests for type 60227 IEC 08  
1 2 3 4 
Ref. No.  Test  Category  Test method described in  
  of test  IEC Subclause  
 1 
 1.1 
 1.2 
 1.3 
 
 2 
 
 2.1 
 
 2.2 
 
 2.3 
 
 3 
 3.1 
 3.2 
 3.3 
 
 4 
 
 5 
 5.1 
 
 6 
 
 7 
 
 8 Electric test  
Resistance of conductors  
Voltage test at 2 000 V  
Insulation resistance at 90 °C  
 
Provisions covering constructional  
and dimensional characteristics  
Checking of compliance with  
constructional provisions  
Measurement of insulation  
thickness  
Measurement of overall diameter  
 
Mechanical properties of insulation  
Tensile test before ageing  
Tensile test after ageing  
Loss of mass test  
 
Pressure test at high temperature  
 
Elasticity at low temperature  
Bending test for insulation 
 
Heat shock test  
 
Test of flame retardance  
 
Thermal stability   
T, S 
T, S 
T 
 
 
 
T, S 
 
T, S 
 
T, S 
 
 
T 
T 
T 
 
T 
 
 
T 
 
T 
 
T 
 
T  
60227 -2 
60227 -2 
60227 -2 
 
60227 -1 and  
60227 -2 
60227 -1 
 
60227 -2 
 
60227 -2 
 
 
60811 -1-1 
60811 -1-2 
60811 -3-2 
 
60811 -3-1 
 
 
60811 -1-4 
 
60811 -3-1 
 
60332 -1 
 
60811 -3-2  
2.1 
2.2 
2.4 
 
 
 
Inspection and 
manual tests  
1.9 
 
1.11  
 
 
9.1 
8.1.3.1  
8.1 
 
8.1 
 
 
8.1 
 
9.1 
 
 
 
9 
 
 __________  
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
18  
Annex AA   
(normative)  
National Modifications  
This annex is National  modifications  which includes specification of additional types of wires: 
Thermoplastic insulated wires and fixture wires.  
These modifications  refers to the following references:  
UL 83:2017 ed. 16  , Thermoplastic -Insulated Wires and Cables  
UL 66:2018 ed. 2  , Fixture Wire  
UL 2556:2015 ed. 4  , Wire and C able Test Methods  
IEC/TR 62602:2009  , Conductors of insulated cables - Data for AWG and KCMIL sizes  
 
Add clause 8 as the following:  
8 Single -core nylon -jacketed cable with unilay stranded conductor for a 
conductor temperature of 90 °C of types TFFN, THHN &TH WN. 
8.1 Code Designation  
THHN/THWN UL 083.  
TFFN UL 066.  
8.2 Rated voltage:  
600 V  
 
8.3 Construction  
8.3.1 Conductor  
Number of conductors: 1  
The conductor shall be stranded and comply with the requirements given in SASO GSO IEC TR 
62602 and table 13.  
8.3.2 I nsulation  
The insulation shall be polyvinyl chloride compound meeting the requirements of table 13 for 
wires types: TFFN and THHN/THWN.  
The insulation thickness shall comply with the specified value in table 14  
8.3.3 Nylon jacket  
The wires of types TFFN an d THHN/THWN shall have a nylon jacket extruded tightly over the 
insulation, nylon jacket thickness shall meet the requirement of table 14 . 
The minimum thickness at any point of the nylon jacket shall not be less than specified values 
in table 14 . 
The insul ation resistance for wires shall not be less than the values given in table 14 . SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
19  
 
Table 13 Conductors for insulated wires  
1 2 3 4 5 
Conductor 
Size  Maximum Acceptable 
Length of Lay  
 (mm)  Nominal 
Conductor 
Diameter  
(mm)  Conductor 
material  Maximum conductor  
resistance  
 (ohms/Km)  
AWG  mm²  
16 1.31  51 1.29  Bare copper  13.7  
14 2.08  44 1.8 Bare copper  8.62  
12 3.31  51 2.29  Bare copper  5.43  
10 5.26  64 2.87  Bare copper  3.41  
8 8.37  70 3.63  Bare copper  2.14  
6 13.3  86 4.55  Bare copper  1.35  
 
 
Table 14 Insulat ion and Nylon Thickness and insulation resistance  
1 2 3 4 5 
   
Conductor 
Size  
Type  Insulation Thickness  
(mm) Minimum 
Nylon 
thickness 
at any 
point  
(mm)  Minimum 
insulation 
resistance  
(M ohm.km)  AWG  Minimum Average 
Insulation 
thickness (mm)  Minimum 
thickness at 
any point 
(mm)  
16 TFFN  0.38  0.33  0.1 0.035  
14 THHN / THWN  0.38  0.33  0.1 0.035  
12 THHN / THWN  0.38  0.33  0.1 0.03  
10 THHN / THWN  0.51  0.46  0.1 0.035  
8 THHN / THWN  0.76  0.69  0.13  0.035  
6 THHN / THWN  0.76  0.69  0.13  0.03  
 
8.4 Tests  
Complia nce with the requirements of 8.3 shall be checked by inspection and by the test given 
in table 15 . 
 
 
 
 
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
20  
 
Table 15 – Tests for Types THHN/THWN and TFFN  
1 2 3 4 
Ref. No.  Test Category of 
test Test Method described in  
IEC Subclause  
1 Electrical test        
1.1 Resistance of conductors  T, S 60227 -2 2.1 
1.2 Voltage test at 2 000 V  T, S 60227 -2 2.2 
1.3 Insulation resistance at 90 °C  T 60227 -2 2.4 
2 Provisions covering constructional and dimensional 
characteristics    60227 -1 and 
60227 -2   
2.1 Checking of compliance with constructional provisions  T, S 60227 -1 Inspection and 
manual tests  
2.2 Measurement of insulation and nylon jacketing 
thickness  T, S 60227 -2 1.9 
2.3 Measurement of overall diameter  T, S 60227 -2 1.11 
3 Mechanical properties of insulatio n       
3.1 Tensile test before ageing  T 60811 -1-1 9.1 
3.2 Tensile test after ageing  T 60811 -1-2 8.1.3.1  
3.3 Loss of mass test  T 60811 -3-2 8.1 
4 Pressure test at high temperature  T 60811 -3-1 8.1 
5 Elasticity and impact strength at low temperature        
5.1 Cold bend with nylon jacket  T 60227 -2 Annex 
AA 4.3 
6 Heat shock for nylon jacketed wires  T 60227 -2 Annex 
AA 4.2 
7 Test of flame retardance  T 60332 -1   
8 Flexibility at room temperature after aging  T 60227 -2 Annex 
AA 4.1 
     
 SASO STANDARD                                           SASO/FDS/IEC 60227 -3:2020  
21 8.5 Guide to use  
Maximum conductor temperature in normal use: 90 °C  
In circumstances in which it is possible to guard against thermoplastic flow, and reduced 
insulation resistance can be tolerated, PVC compound suitable for continuous use at 90 °C can 
be operated at temper atures up to 105 °C for a reduced total working duration.  
8.5.1 Equivalent wires types current carrying capacities  
The following table 16 is practical equivalent size selection guide between wires types IEC 01 
and THHN/THWN UL 083 & TFFN UL 066 according to their current carrying capacities in 
practical conditions:  
 
Table 16 – practical equivalent size selection guide between wires types  
Code designation  
60227 IEC 01  Code designations  
TFFN UL 066  
THHN/THWN UL 083  
Size  (mm²)  Size (AWG)  
1.5 mm²  16 AWG  
2.5 mm²  14 AWG  
4 mm²  12 AWG  
6 mm²  10 AWG  
 
Above mentioned sizes can be used interchangeably in all applications of Saudi Building Code:  
SBC 401 – Chapter 52: Wiring systems.