IEC TR 62602:2009

IEC/TR 62602 ®
Edition 1.0 2009-09
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Conductors of insulated cables – Data for AWG and KCMIL sizes

Âmes des câbles isolés – Informations relatives aux sections exprimées en AWG
et KCMIL
IEC/TR 62602:2009
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IEC/TR 62602 ®
Edition 1.0 2009-09
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
Conductors of insulated cables – Data for AWG and KCMIL sizes

Âmes des câbles isolés – Informations relatives aux sections exprimées en
AWG et KCMIL
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
R
CODE PRIX
ICS 29.060.20 ISBN 978-2-88910-771-1
– 2 – TR 62602 © IEC:2009
CONTENTS
FOREWORD.3
INTRODUCTION.5
1 Scope.6
2 Terms and definitions .6
3 Classification.6
4 Materials .7
4.1 General .7
4.2 Solid aluminium conductors.7
4.3 Circular and shaped stranded aluminium conductors .7
5 Solid conductors and stranded conductors .7
5.1 Solid conductors (Class 1).7
5.1.1 Construction .7
5.1.2 Resistance .7
5.2 Stranded circular non-compacted conductors (Class 2) .8
5.2.1 Construction .8
5.2.2 Resistance .8
5.3 Stranded compacted circular conductors and stranded shaped conductors
(Class 2) .8
5.3.1 Construction .8
5.3.2 Resistance .8
6 Flexible conductors (Classes 5 and 6) .8
6.1 Construction.8
6.2 Resistance .8
7 Compliance with Clauses 5 and 6 .9
Annex A (informative) Measurement of resistance .13
Annex B (informative) Exact formulae for the temperature correction factors .15
Annex C (informative) Guidance on the dimensional limits of circular conductors.16
Bibliography.19

Table 1 – Class 1 solid conductors for single-core and multi-core cables .9
Table 2 – Class 2 stranded conductors for single-core and multi-core cables .10
Table 3 – Class 5 flexible copper conductors for single core and multi-core cables .11
Table 4 – Class 6 flexible copper conductors for single-core and multi-core cables .12
Table A.1 – Temperature correction factors k for conductor resistance to correct the
t
measured resistance at t °C to 20 °C .14
Table C.1 – Maximum diameters of circular copper conductors, solid, non-compacted
stranded and flexible .17
Table C.2 – Minimum and maximum diameters of stranded compacted circular copper,
aluminium and aluminium alloy conductors .18
Table C.3 – Minimum and maximum diameters of solid circular aluminium conductors .18

TR 62602 © IEC:2009 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
CONDUCTORS OF INSULATED CABLES –
DATA FOR AWG AND KCMIL SIZES
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
The main task of IEC technical committees is to prepare International Standards. However, a
technical committee may propose the publication of a technical report when it has collected
data of a different kind from that which is normally published as an International Standard, for
example "state of the art".
IEC/TR 62602, which is a technical report, has been prepared by IEC technical committee 20:
Electric cables.
The text of this technical report is based on the following documents:
Enquiry draft Report on voting
20/1048/DTR 20/1061/RVC
Full information on the voting for the approval of this technical report can be found in the
report on voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.

– 4 – TR 62602 © IEC:2009
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 specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
TR 62602 © IEC:2009 – 5 –
INTRODUCTION
Conductors described in IEC 60228 [1] are specified in metric sizes. North America and
certain other regions at present use conductor sizes and characteristics according to the
American Wire Gauge (AWG) system, and kcmil for larger sizes. The use of these sizes is
currently prescribed across North America and elsewhere for installations by sub-national
regulations. IEC TC 20 cable product standards do not prescribe cables with AWG/kcmil
conductors.
IEC TC 20 recognizes the need to produce a single, harmonized standard for conductors that
is truly international. Harmonization, in this respect, is understood as the merging of AWG-
based and metric-based sizes to produce one rationalized range of conductor sizes for power
cables. TC 20 also recognizes that the development of such a harmonized standard is a long-
term project.
A three-stage approach, which will culminate in a single International Standard for
conductors, has been agreed.
Stage one of the approach is to produce a technical report that defines the range of
AWG/kcmil sizes that are to be considered in the harmonization process.
Stage two of the process is to develop this technical report by starting the rationalization
process. The test methods and requirements in this technical report are to be aligned with
those in IEC 60228.
The third and final stage will be to produce a harmonized standard, based on IEC 60228 and
the work of the first two stages, with a single, rationalized range of conductor sizes. The
present expectation is that the third stage will not be achieved before 2020.
This technical report provides resistance and dimensional details for AWG and kcmil sizes as
well as giving approximate equivalent metric nominal cross-sectional areas.
The tabulated values of resistance given in this technical report are for single-core cables.
Factors are given to determine the maximum resistance for multi-core cables. The alignment
of single-core and multi-core cable conductor resistance is to be considered in stage two.

—————————
Figures in square brackets refer to the bibliography.

– 6 – TR 62602 © IEC:2009
CONDUCTORS OF INSULATED CABLES –
DATA FOR AWG AND KCMIL SIZES
1 Scope
IEC/TR 62602, which is a technical report, specifies the nominal cross-sectional areas, in the
2 2
range 20 AWG to 2 000 kcmil (0,52 mm to 1 010 mm ), for conductors in electric power
cables and cords for a wide range of types. Requirements for numbers and sizes of wires and
resistance values are also included. These conductors include solid and stranded copper,
aluminium and aluminium alloy conductors in cables for fixed installations and flexible copper
conductors.
This technical report is not intended to apply to conductors designed for use in cables
intended for telecommunication or data transmission, winding wires or similar products.
Unless indicated to the contrary in a particular clause, this technical report relates to
conductors in finished cables and not to conductors made or supplied for inclusion into a
cable.
The annexes give supplementary information covering measurement of resistance (Annex A),
temperature correction factors for resistance measurement (Annex B) and dimensional limits
of circular conductors (Annex C).
2 Terms and definitions
For the purposes of this document, the following definitions apply.
2.1
metal-coated
coated with a thin layer of suitable metal, such as tin or tin alloy
2.2
nominal cross-sectional area
value that identifies a particular size of conductor but is not subject to direct measurement
NOTE Each particular size of conductor in this technical report is required to meet a maximum resistance value.
3 Classification
The conductors have been divided into four classes, 1, 2, 5 and 6. Those in Classes 1 and 2
are intended for use in cables for fixed installations. Classes 5 and 6 are intended for use in
flexible cables and cords but may also be used for fixed installations:
– Class 1: solid conductors;
– Class 2: stranded conductors;
– Class 5: flexible conductors;
– Class 6: flexible conductors which are more flexible than Class 5.

TR 62602 © IEC:2009 – 7 –
4 Materials
4.1 General
The conductors consist of one of the following:
• plain or metal-coated annealed copper;
• aluminium or aluminium alloy.
4.2 Solid aluminium conductors
Circular and shaped solid aluminium conductors are made from aluminium such that the
tensile strength of the completed conductor is within the following limits:
Nominal cross-sectional area Tensile strength
2 2
mm N/mm
≤13 110 to 165
21 and 34 60 to 130
42 60 to 110
54 and above 60 to 90
NOTE The values given above are not applicable to aluminium alloy conductors.
4.3 Circular and shaped stranded aluminium conductors
Stranded aluminium conductors are made from aluminium such that the tensile strength of the
individual wires is within the following limits:
Nominal cross-sectional area Tensile strength
2 2
mm N/mm
Up to 200
≤13
21 and above 125 to 205
NOTE 1 The values given above are not applicable to aluminium alloy conductors.
NOTE 2 This data can only be checked on wires taken before stranding and not on wires taken from a stranded
conductor.
5 Solid conductors and stranded conductors
5.1 Solid conductors (Class 1)
5.1.1 Construction
a) Solid conductors (Class 1) consist of one of the materials specified in Clause 4.
b) Solid copper conductors are of circular cross-section.
NOTE Solid copper conductors having nominal cross-sectional areas of 21 mm and above are for particular
types of cable, e.g. mineral insulated, and not for general purposes.
2 2
c) Solid aluminium and solid aluminium alloy conductors of sizes 3,3 mm to 34 mm are of
circular cross-section. Larger sizes are of circular cross-section for single-core cables and
may be of either circular or shaped cross-section for multi-core cables.
5.1.2 Resistance
The resistance of each conductor at 20 °C, when determined in accordance with Clause 7,
does not exceed the appropriate maximum value given in Table 1.

– 8 – TR 62602 © IEC:2009
NOTE For solid aluminium alloy conductors, having the same nominal cross-sectional area as an aluminium
conductor, the resistance value given in Table 1 should be multiplied by a factor of 1,162, unless otherwise agreed
between the manufacturer and the purchaser.
5.2 Stranded circular non-compacted conductors (Class 2)
5.2.1 Construction
a) Stranded circular non-compacted conductors (Class 2) consist of one of the materials
specified in Clause 4.
b) The wires in each conductor all have the same nominal diameter.
c) The number of wires in each conductor is not less than the appropriate minimum number
given in Table 2.
5.2.2 Resistance
The resistance of each conductor at 20 °C, when determined in accordance with Clause 7,
does not exceed the appropriate maximum value given in Table 2.
5.3 Stranded compacted circular conductors and stranded shaped conductors
(Class 2)
5.3.1 Construction
a) Stranded compacted circular conductors and stranded shaped conductors (Class 2)
consist of one of the materials specified in Clause 4. Stranded shaped copper, aluminium
or aluminium alloy conductors have a nominal cross-sectional area of not less than
67 mm .
b) The ratio of the diameters of two different wires in the same conductor does not exceed 2.
c) The number of wires in each conductor is not less than the appropriate minimum number
given in Table 2.
NOTE This requirement applies to conductors made with wires of circular cross-section before compaction and
not to conductors made with pre-shaped wires.
5.3.2 Resistance
The resistance of each conductor at 20 °C, when determined in accordance with Clause 7,
does not exceed the appropriate value given in Table 2.
6 Flexible conductors (Classes 5 and 6)
6.1 Construction
a) Flexible conductors (Classes 5 and 6) consist of plain or metal-coated annealed copper.
b) The wires in each conductor have the same nominal diameter.
c) The diameter of the wires in each conductor does not exceed the appropriate maximum
value given in Tables 3 or 4.
6.2 Resistance
The resistance of each conductor at 20 °C, when determined in accordance with Clause 7,
does not exceed the appropriate maximum value given in Tables 3 or 4.

TR 62602 © IEC:2009 – 9 –
7 Compliance with Clauses 5 and 6
Compliance with the requirements of 5.1.1, 5.2.1, 5.3.1 and 6.1 is checked on the completed
cable by inspection and measurement, where practicable.
Compliance with the requirements for resistance given in 5.1.2, 5.2.2, 5.3.2 and 6.2 is
checked by measurement in accordance with Annex A and corrected for temperature by the
factors in Table A.1.
Table 1 – Class 1 solid conductors for single-core and multi-core cables
1 2 3 4 5
a
Maximum resistance of single-core conductors at 20 °C
Circular, annealed copper conductors Aluminium and
Nominal cross-
Size
aluminium alloy
sectional area
Plain Metal-coated
conductors, circular
d
or shaped
mm AWG Ω/km Ω/km Ω/km
0,52 20 33,9 35,2 -
0,82 18 21,4 22,2 -
1,3 16 13,5 14,0 -
2,1 14 8,45 8,78 -
b
3,3 12 5,31 5,53 8,71
b
5,3 10 3,34 3,48 5,48
b
8,4 8 2,10 2,16 3,45
b
13 6 1,32 1,36 2,17
c c b
21 4 0,832 0,856 1,36
c c b
34 2 0,523 0,538 0,857
c c
42 1 0,415 0,427 0,680
c c
54 1/0 0,329 0,337 0,539
c c
67 2/0 0,261 0,267 0,428
c c
85 3/0 0,207 0,212 0,339
c c
107 4/0 0,164 0,168 0,269
a
Resistance factors for multi-core cables:
– Insulated conductors cabled in one layer Table 1 values × 1,02;
– Insulated conductors cabled in more than one layer Table 1 values × 1,03; or
– Insulated conductors cabled as an assembly of other pre-cabled units Table 1 values × 1,04.
b 2
Aluminium conductors to 34 mm circular only . See 5.1.1.c)
c
See note to 5.1.1.b)
d
See note to 5.1.2
—————————
[2] UL 1581 May 6, 2003 – Table 30.1 & 30.2

– 10 – TR 62602 © IEC:2009
Table 2 – Class 2 stranded conductors for single-core and multi-core cables
1 2 3 4 5 6 7 8 9 10 11 12
Minimum number of wires in the Maximum resistance of single-core

a
conductor conductors at 20 °C
Nominal Aluminium or
cross Size/cross- Circular Annealed copper aluminium
Circular Shaped
sectional sectional area compacted conductor alloy
area conductor
Metal-
Plain
Cu Al Cu Al Cu Al coated
wires
wires
mm AWG kcmil
Ω/km Ω/km Ω/km
0,52 20 7 - - - - - 34,6 36,7 -
0,82 18 7 - - - - - 21,8 23,2 -
1,3 16 7 - - - - - 13,7 14,6 -
2,1 14 7 - - - - - 8,62 8,96 -
3,3 12 7 7 - - - - 5,43 5,64 8,88
5,3 10 7 7 - - - - 3,41 3,55 5,59
8,4 8 7 7 7 7 - - 2,14 2,23 3,52
13 6 7 7 7 7 - - 1,35 1,40 2,21
21 4 7 7 7 7 - - 0,848 0,882 1,39
34 2 7 7 7 7 - - 0,534 0,555 0,875
42 1 19 19 18 18 - - 0,423 0,440 0,693
54 1/0 19 19 18 18 - - 0,335 0,349 0,550
67 2/0 19 19 18 18 15 15 0,266 0,276 0,436
85 3/0 19 19 18 18 15 15 0,211 0,219 0,346
107 4/0 19 19 18 18 15 15 0,167 0,172 0,274
127 250 37 37 35 35 28 28 0,142 0,147 0,232
177 350 37 37 35 35 28 28 0,101 0,105 0,166
253 500 37 37 35 35 28 28 0,070 8 0,072 9 0,116
380 750 61 61 58 58 47 47 0,047 2 0,048 6 0,077 4
507 1 000 61 61 58 58 47 47 0,035 4 0,036 4 0,058 0
633 1 250 91 91 91 - - - 0,028 3 0,029 2 0,046 4
760 1 500 91 91 91 - - - 0,023 6 0,024 3 0,038 7
887 1 750 91 91 91 - - - 0,020 2 0,020 8 0,033 2
1 014 2 000 127 127 127 - - - 0,017 7 0,018 2 0,029 0
a
Resistance factors for multi-core cables:
– Insulated conductors cabled in one layer Table 2 values × 1,02;
– Insulated conductors cabled in more than one layer Table 2 values × 1,03; or
– Insulated conductors cabled as an assembly of other pre-cabled units Table 2 values × 1,04

—————————
[2] Resistance UL 1581 May 6, 2003 – Table 30.3 and 30.4 Class B
Strand – Circular ASTM B8 (Cu) B231 (Al) B801 (ACM Al), Combination Unilay ASTM B787 (Cu)
B786 (Al), Compact ASTM B496 (Cu) B400 (Al)

TR 62602 © IEC:2009 – 11 –
Table 3 – Class 5 flexible copper conductors for single core and multi-core cables
1 2 3 4 5 6
Nominal Maximum diameter Maximum resistance of single-core
a
cross- Size/cross- of wires in conductors at 20 °C
sectional sectional area conductor
Plain wires Metal-coated wires
area
mm AWG kcmil mm
Ω/km Ω/km
2,1 14 0,24 8,70 9,24
3,3 12 0,30 5,48 5,81
5,3 10 0,38 3,45 3,66
8,4 8 0,29 2,18 2,33
13 6 0,37 1,38 1,46
21 4 0,46 0,865 0,918
27 3 0,52 0,686 0,728
34 2 0,42 0,547 0,580
42 1 0,47 0,434 0,460
54 1/0 0,52 0,344 0,357
67 2/0 0,59 0,272 0,284
85 3/0 0,66 0,216 0,224
107 4/0 0,74 0,172 0,180
127 250 0,62 0,146 0,152
177 350 0,74 0,104 0,108
253 500 0,88 0,072 9 0,075 8
380 750 0,84 0,049 1 0,051 0
507 1 000 0,97 0,036 8 0,038 2
633 1 250 1,08 0,029 5 0,030 6
a
Resistance factors for multi-core cables:
– insulated conductors cabled in one layer Table 3 values × 1,02;
– insulated conductors cabled in more than one layer Table 3 values × 1,03; or
– insulated conductors cabled as an assembly of other pre-cabled units Table 3 values × 1,04

—————————
[2] Resistance UL 1581 May 6, 2003 – Table 30.7 ASTM Class G (14 AWG-10 AWG)
Resistance UL 1581 May 6, 2003 – Table 30.8 ASTM Class H (8 AWG-1250 kcmil)
Max Wire Diameter ASTM B 173 (Nom + 0,01 mm)

– 12 – TR 62602 © IEC:2009
Table 4 – Class 6 flexible copper conductors for single-core and multi-core cables
1 2 3 4 5 6
Nominal Maximum diameter Maximum resistance of single-core
a
cross- Size/cross- of conductors at 20 °C
sectional sectional area wires in
Plain wires Metal-coated wires
area conductor
mm AWG kcmil mm
Ω/km Ω/km
2,1 14 0,17 8,61 9,25
3,3 12 0,17 5,53 5,94
5,3 10 0,17 3,48 3,73
8,4 8 0,17 2,18 2,35
13 6 0,17 1,39 1,49
21 4 0,17 0,873 0,937
34 2 0,17 0,554 0,595
42 1 0,17 0,440 0,472
54 1/0 0,17 0,349 0,374
67 2/0 0,17 0,276 0,300
85 3/0 0,17 0,221 0,238
107 4/0 0,17 0,175 0,189
127 250 0,17 0,149 0,159
177 350 0,17 0,106 0,114
253 500 0,17 0,074 3 0,079 8
380 750 0,17 0,049 5 0,053 1
507 1 000 0,17 0,037 1 0,039 9
a
Resistance factors for multi-core cables:
– Insulated conductors cabled in one layer Table 4 values × 1,02;
– Insulated conductors cabled in more than one layer Table 4 values × 1,03; or
– Insulated conductors cabled as an assembly of other pre-cabled units Table 4 values × 1,04

—————————
[2] Resistance UL 1581 May 6, 2003 – Table 30.11 ASTM Class M
Max Wire Diameter ASTM B 172 Class M (Nom + 0,01 mm)

TR 62602 © IEC:2009 – 13 –
Annex A
(informative)
Measurement of resistance
The cable is kept in the test area for sufficient time to ensure that the conductor temperature
has reached a level which permits an accurate determination of resistance, using the
correction factors provided.
Measure the d.c. resistance of the conductor(s), either on a complete length of cable or
flexible cord or on a sample of cable or flexible cord of at least 1 m in length, at room
temperature and record the temperature at which the measurement is made. Adjust the
measured resistance by means of the correction factors given in Table A.1.
Calculate the resistance per kilometre length of cable from the length of the complete cable
and not from the length of the individual core or wires.
If necessary, correction to 20 °C and 1 km length is made by applying the following formula:
1 000
R = R ⋅k ⋅
20 t t
L
where
k is the temperature correction factor from Table A.1;
t
R is the conductor resistance at 20 °C, Ω/km;
R is the measured conductor resistance, Ω;
t
L is the length of the cable, m

– 14 – TR 62602 © IEC:2009
Table A.1 – Temperature correction factors k for conductor resistance to correct
t
the measured resistance at t °C to 20 °C
1 2 1 2
Temperature of conductor Correction factor, Temperature of conductor Correction factor,
at time of measurement k , at time of measurement k ,
t t
all conductors all conductors
t °C t °C
0 1,087 21 0,996
1 1,082 22 0,992
2 1,078 23 0,988
3 1,073 24 0,984
4 1,068 25 0,980
5 1,064 26 0,977
6 1,059 27 0,973
7 1,055 28 0,969
8 1,050 29 0,965
9 1,046 30 0,962
10 1,042 31 0,958
11 1,037 32 0,954
12 1,033 33 0,951
13 1,029 34 0,947
14 1,025 35 0,943
15 1,020 36 0,940
16 1,016 37 0,936
17 1,012 38 0,933
18 1,008 39 0,929
19 1,004 40 0,926
20 1,000
NOTE The values of correction factors k are based on a resistance-temperature coefficient of 0,004 per K at
t
20 °C.
The values of temperature correction factors specified in Column 2 are approximate but give practical values well
within the accuracy that can normally be achieved in the measurements of conductor temperature and length of
cables or flexible cords.
For more accurate values for the temperature correction factors for copper and aluminium, reference should be
made to Annex B. However, these should not be treated as a requirement for testing in compliance with this
technical report in the assessment of resistances.

TR 62602 © IEC:2009 – 15 –
Annex B
(informative)
Exact formulae for the temperature correction factors

B.1 Annealed copper conductors: plain or metal coated
254,5 1
K = = B.1)
t,Cu
234,5 +t 1 + 0,00393()t − 20
B.2 Aluminium conductors
248 1
K = = (B.2)
t,Al
228 +t 1+ 0,00403()t − 20
NOTE For aluminium alloys, reference should be made to the manufacturer.
In the above cases, t refers to the temperature of the conductor at the time of measurement in
degrees Celsius.
– 16 – TR 62602 © IEC:2009
Annex C
(informative)
Guidance on the dimensional limits of circular conductors

C.1 Object
This annex is intended as a guide to manufacturers of cables and cable connectors to assist
in ensuring that the conductors and connectors are dimensionally compatible. It gives
guidance on dimensional limits for the following types of conductor included in this technical
report:
a) circular solid conductors, (Class 1) of copper, aluminium and aluminium alloy;
b) circular and compacted circular stranded conductors, (Class 2), of copper, aluminium and
aluminium alloy.
c) flexible conductors, (Classes 5 and 6), of copper.
C.2 Dimensional limits for circular copper conductors
The diameters of circular copper conductors should not exceed the values given in Table C.1.
If minimum diameters for Class 1 circular copper conductors are needed, reference can be
made to the minimum diameters for solid circular aluminium or aluminium alloy conductors
indicated in Table C.3.
C.3 Dimensional limits for stranded compacted circular copper, aluminium
and aluminium alloy conductors
The diameters of stranded compacted circular copper, aluminium and aluminium alloy
conductors should not exceed the maximum values and should be not less than the minimum
values given in Table C.2.
In the exceptional case of uncompacted circular stranded aluminium or aluminium alloy
conductors, the maximum diameters should not exceed the corresponding values for copper
conductors given in Table C.1.
C.4 Dimensional limits for circular solid aluminium conductors
The diameters of circular solid aluminium and aluminium alloy conductors should not exceed
the maximum values and should be not less than the minimum values given in Table C.3.

TR 62602 © IEC:2009 – 17 –
Table C.1 – Maximum diameters of circular copper conductors, solid,
non-compacted stranded and flexible
1 2 3 4 5 6 7
Nominal Size/cross- Conductors in cables for fixed Flexible
a
Conductor
cross-sectional sectional area installations conductors
area in
area
AWG kcmil Solid Stranded
circular mils
mm (Class 5 and 6)
(Class 1) (Class 2)
mm
mm mm
2,1 14 4 110 1,64 1,86 2,13
3,3 12 6 530 2,07 2,35 2,67
5,3 10 10 380 2,61 2,97 3,36
8,4 8 16 510 3,30 3,73 4,28
13 6 26 240 4,16 4,72 5,39
21 4 41 740 5,24 5,94 6,82
34 2 66 360 6,61 7,49 8,59
42 1 83 690 7,42 8,51 9,70
54 1/0 105 600 8,33 9,55 10,9
67 2/0 133 100 9,36 10,7 12,2
85 3/0 167 800 10,5 12,1 13,8
107 4/0 211 600 11,8 13,5 15,4
127 250 250 000 - 14,8 16,8
177 350 350 000 - 17,5 19,8
253 500 500 000 - 20,9 23,7
380 750 750 000 - 25,6 29,4
507 1 000 1 000 000 - 29,6 33,9
633 1 250 1 250 000 - 33,1 37,9
760 1 500 1 500 000 - 36,2 -
887 1 750 1 750 000 - 39,1 -
1 014 2 000 2 000 000 - 41,9 -
a
The values given for flexible conductors are intended to allow for both Class 5 and Class 6 conductors.

—————————
[2] UL 1581 May 6, 2003 – Table 20.1 Solid
UL 1581 May 6, 2003 – Table 20.4 ASTM Class B
ASTM B173-01a Class G (14 AWG-10 AWG) (nom. inches * 1,01 *25,4)
ASTM B173-01a Class H (8 AWG-1250 kcmil) (nom. inches * 1,01 *25,4)

– 18 – TR 62602 © IEC:2009
Table C.2 – Minimum and maximum diameters of stranded compacted circular copper,
aluminium and aluminium alloy conductors
1 2 3 4 5 6
Nominal Size/cross- Conductor Stranded compacted circular conductors
cross-sectional sectional area (Class 2)
area in
area circular mils
2 AWG kcmil Minimum diameter Maximum diameter
mm
mm mm
8,4 8 16 510 3,23 3,43
13 6 26 240 4,22 4,34
21 4 41 740 5,31 5,46
34 2 66 360 6,68 6,88
42 1 83 690 7,44 7,67
54 1/0 105 600 8,36 8,61
67 2/0 133 100 9,35 9,65
85 3/0 167 800 10,5 10,8
107 4/0 211 600 11,8 12,2
127 250 250 000 13,0 13,3
177 350 350 000 15,3 15,8
253 500 500 000 18,3 18,9
380 750 750 000 22,6 23,3
507 1000 1 000 000 26,4 27,2

Table C.3 – Minimum and maximum diameters of solid circular aluminium conductors
1 2 3 4
Nominal Solid conductors (Class 1)
cross-sectional Size
Minimum Maximum
area
mm AWG mm mm
5,3 10 2,54 2,61
8,4 8 3,20 3,30
13 6 4,03 4,16
21 4 5,09 5,24
34 2 6,41 6,61
42 1 7,20 7,42
54 1/0 8,09 8,33
67 2/0 9,08 9,36
85 3/0 10,2 10,5
107 4/0 11.5 11,8
—————————
[2] UL 1581 May 6, 2003 – Table 20.2 Round Compact-Stranded Conductors.
[2] UL 1581 May 6, 2003 – Table 20.1 Solid Conductor Dimensions

TR 62602 © IEC:2009 – 19 –
Bibliography
[1] IEC 60228, Conductors of insulated cables
[2] UL 1581 May 6, 2003, Electrical Wire, Cables, and Flexible Cords

___________
– 20 – TR 62602 © CEI:2009
SOMMAIRE
AVANT-PROPOS.22
INTRODUCTION.24
1 Domaine d’application .25
2 Termes et définitions .25
3 Classification.25
4 Matériaux .26
4.1 Rémarques préliminaires.26
4.2 Âmes massives en aluminium.26
4.3 Âmes câblées circulaires et sectorales en aluminium .26
5 Âmes massives et câblées .26
5.1 Âmes massives (Classe 1) .26
5.1.1 Construction .26
5.1.2 Résistance .26
5.2 Âmes câblées de section circulaire, non rétreintes (Classe 2) .27
5.2.1 Construction .27
5.2.2 Résistance .27
5.3 Âmes câblées rétreintes de section circulaire et âmes sectorales câblées
(Classe 2) .27
5.3.1 Construction .27
5.3.2 Résistance .27
6 Âmes souples (Classes 5 et 6) .27
6.1 Construction.27
6.2 Résistance .27
7 Contrôle de la conformité aux Articles 5 et 6.28
Annexe A (informative) Mesure de la résistance .32
Annexe B (informative) Formules exactes pour les facteurs de correction de
température .34
Annexe C (informative) Indications pour les limites dimensionnelles des âmes
circulaires .35
Bibliographie.38

Tableau 1 – Âmes massives de Classe 1 pour câbles monoconducteurs et
multiconducteurs .
Tableau 2 – Âmes câblées de Classe 2 pour câbles monoconducteurs et
multiconducteurs .29
Tableau 3 – Âmes souples de Classe 5 pour câbles monoconducteurs et
multiconducteurs .30
Tableau 4 – Âmes souples de Classe 6 pour câbles monoconducteurs et
multiconducteurs.
Tableau A.1 – Facteurs de correction de température k , pour ramener à 20 °C la
t
résistance mesurée à t °C.33
Tableau C.1 – Diamètres maximaux des âmes circulaires en cuivre, massives, câblées
non rétreintes et souples .36
Tableau C.2 – Diamètres minimaux et maximaux des âmes câblées rétreintes
circulaires en cuivre, en aluminium et alliage d’aluminium .37

TR 62602 © CEI:2009 – 21 –
Tableau C.3 – Diamètres minimaux et maximaux des âmes circulaires massives en
aluminium .37

– 22 – TR 62602 © CEI:2009
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
ÂMES DES CÂBLES ISOLÉS –
INFORMATIONS RELATIVES AUX SECTIONS
EXPRIMÉES EN AWG ET KCMIL
AVANT-PROPOS
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...