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IEC 60228 : 2004 - 11 CONDUCTOR TABLES
MINIMUM AND MAXIMUM DIAMETERS OF STRANDED COMPACTED CIRCULAR COPPER, ALUMINIUM AND ALUMINIUM ALLOY CONDUCTORS
Cross-sectional area
[mm
2
]
Stranded compacted circular conductors (Class 2)
Minimum diameter
[mm]
Maximum diameter
[mm]
10
3,6
4,0
16
4,6
5,2
25
5,6
6,5
35
6,6
7,5
50
7,7
8,6
70
9,3
10,2
95
11,0
12,0
120
12,3
13,5
150
13,7
15,0
185
15,3
16,8
240
17,6
19,2
300
19,7
21,6
400
22,3
24,6
500
25,3
27,6
630
28,7
32,5
NOTES: - The dimensional limits of Aluminium conductors with cross-sectional areas above 630 mm
2
are not given as the compaction technology is not generally estabilished.
- The values are given for compacted Copper conductors in the size range 1,5 mm
2
to 6 mm
2
.
MAXIMUM DIAMETERS OF CIRCULAR COPPER CONDUCTORS: SOLID, NON COMPACTED STRANDED AND FLEXIBLE
Cross sectional area
[mm
2
]
Conductors in cables for fixed installations
Flexible conductors (Classes 5 and 6)
Maximum diameter [mm]
Solid (Class 1)
Maximum diameter [mm]
Stranded (Class 2)
Maximum diameter [mm]
0,5
0,9
1,1
1,1
0,75
1,0
1,2
1,3
1
1,2
1,4
1,5
1,5
1,5
1,7
1,8
2,5
1,9
2,2
2,4
4
2,4
2,7
3,0
6
2,9
3,3
3,9
10
3,7
4,2
5,1
16
4,6
5,3
6,3
25
a
5,7
6,6
7,8
35
a
6,7
7,9
9,2
50
a
7,8
9,1
11,0
70
a
9,4
11,0
13,1
95
a
11,0
12,9
15,1
120
a
12,4
14,5
17,0
150
a
13,8
16,2
19,0
185
15,4
18,0
21,0
240
17,6
20,6
24,0
300
19,8
23,1
27,0
400
22,2
26,1
31,0
500
-
29,2
35,0
630
-
33,2
39,0
800
-
37,6
-
1000
-
42,2
-
NOTE The values given for flexible conductors represent both class 5 and class 6 conductors.
a
Solid Copper conductor shaving cross-sectional areas of 25 mm
2
and above are for particular types of cable, e.g. mineral insulated, and not for general purposes.
MINIMUM AND MAXIMUM DIAMETERS OF CIRCULAR ALUMINIUM CONDUCTORS
Cross-sectional area
[mm
2
]
Solid conductors (Class 1)
Minimum diameter
[mm]
Maximum diameter
[mm]
10
3,4
3,7
16
4,1
4,6
25
5,2
5,7
35
6,1
6,7
50
7,2
7,8
70
8,7
9,4
95
10,3
11,0
120
11,6
12,4
150
12,9
13,8
185
14,5
15,4
240
16,7
17,6
300
18,8
19,8
400
21,2
22,2
500
24,0
25,1
630
27,3
28,4
800
30,9
32,1
1000
34,8
36,0
1200
37,8
39,0