|
|
|
Conductor
Crosss-Sectional
Area
mm²
|
Maximum
Conductor
Resistance
W/Km
|
Maximum
Current
Rating
A
|
|
0.5
|
39.0
|
11.5
|
|
0.75
|
26.0
|
16
|
|
1.0
|
19.50
|
19
|
|
1.5
|
13.30
|
24
|
|
2.5
|
7.98
|
32
|
|
4.0
|
4.95
|
43
|
|
6.0
|
3.30
|
56
|
|
10.0
|
1.91
|
79
|
|
16.0
|
1.21
|
105
|
|
25.0
|
0.780
|
141
|
|
35.0
|
0.554
|
178
|
|
50.0
|
0.386
|
217
|
|
70.0
|
0.272
|
276
|
|
95.0
|
0.206
|
337
|
|
120.0
|
0.161
|
400
|
|
The current ratings tabulated above are based on single cables in free air, a maximum conductor temperature of 90°C and an ambient temperature of 30°C. The volts drop tabulated above are for single cables only. For circuits of single phase 50Hz a.c. or two wire d.c. the figures shown should be multiplied by 2 and for three phase 50Hz a.c. multiplied by 1.732
Note: The temperature rise in a conductor due to current flow should be limited to 40°C
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