4 core cu/xlpe/swa/pvc and 4 core al/xlpe/sct/pe Equivalent Cable Size Comparison
Nominal cross-sectional area
For CU |
Cu conductor current rating (Amperes) |
Votage drop CU conductor
(mV/A/m) |
Votage drop AL conductor
(mV/A/m) |
Equivalent current rating of AL conductor (Amperes) |
Nominal cross-sectional area
For AL |
| 10mm² |
73 |
4.0 |
4.2 |
76 |
16mm² |
| 16mm² |
94 |
2.5 |
2.7 |
90 |
25mm² |
| 25mm² |
124 |
1.65 |
1.45 |
136 |
50mm² |
| 35mm² |
154 |
1.15 |
0.97 |
174 |
70mm² |
| 50mm² |
187 |
0.87 |
0.72 |
211 |
95mm² |
| 70mm² |
238 |
0.60 |
0.58 |
245 |
120mm² |
| 95mm² |
289 |
0.45 |
0.47 |
283 |
150mm² |
| 120mm² |
335 |
0.37 |
0.39 |
323 |
185mm² |
| 150mm² |
386 |
0.30 |
0.31 |
382 |
240mm² |
| 185mm² |
441 |
0.26 |
0.26 |
440 |
300mm² |
| 240mm² |
520 |
0.21 |
0.22 |
517 |
400mm² |
| 300mm² |
599 |
0.185 |
0.19 |
605 |
500mm² |
| 400mm² |
673 |
0.165 |
0.175 |
691 |
630mm² |
The continous current carrying capacities are based on the following condition :
(i) Ambient temp 30°C
(ii) Max. continuous loading temp of conductor 90°C
(iii) Clipped direct, one 3 or 4 core cables, 3 phase a.c. |
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