| Nominal area of conductor | Buried direct in the ground | In single way Ducts | In air | Max. DC conductor resistance at 20˚C |
|---|---|---|---|---|
| mm² | Amp | Amp | Amp | Ω/km |
| 16 | 74 | 61 | 69 | 1.91 |
| 25 | 95 | 79 | 93 | 1.20 |
| 35 | 114 | 94 | 114 | 0.868 |
| 50 | 134 | 112 | 138 | 0.641 |
| 70 | 164 | 137 | 175 | 0.443 |
| 95 | 197 | 164 | 216 | 0.320 |
| 120 | 223 | 187 | 249 | 0.253 |
| 150 | 249 | 209 | 284 | 0.206 |
| 185 | 282 | 238 | 329 | 0.164 |
| 240 | 327 | 276 | 392 | 0.125 |
| 300 | 369 | 312 | 452 | 0.100 |
| 400 | 420 | 356 | 526 | 0.0778 |