Current Ratings for Cables

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Table B.2

Current ratings for single-core cables with XLPE insulation – Rated voltage 3,6/6 kV to 18/30 kV – Copper conductor

Cross-Section In ground (direct) In ground (duct) In air
(mm2) Trefoil Flat Trefoil Flat Trefoil Flat touching Flat spaced
16 109 113 103 104 125 128 150
25 140 144 132 133 163 167 196
35 166 172 157 159 198 203 238
50 196 203 186 188 238 243 286
70 239 246 227 229 296 303 356
95 285 293 271 274 361 369 434
120 323 332 308 311 417 426 500
150 361 366 343 347 473 481 559
185 406 410 387 391 543 550 637
240 469 470 447 453 641 647 745
300 526 524 504 510 735 739 846
400 590 572 564 571 845 837 938

Table B.3

Current ratings for single-core cables with XLPE insulation – Rated voltage 3,6/6 kV to 18/30 kV – Aluminium conductor

Cross-Section In ground (direct) In ground (duct) In air
(mm2) Trefoil Flat Trefoil Flat Trefoil Flat touching Flat spaced
16 84 88 80 81 97 99 116
25 108 112 102 103 127 130 153
35 129 134 122 123 154 157 185
50 152 157 144 146 184 189 222
70 186 192 176 178 230 236 278
95 221 229 210 213 280 287 338
120 252 260 240 242 324 332 391
150 281 288 267 271 368 376 440
185 317 324 303 307 424 432 504
240 367 373 351 356 502 511 593
300 414 419 397 402 577 586 677
400 470 466 451 457 673 676 769

Table B.4

Current ratings for single-core cables with EPR insulation – Rated voltage 3,6/6 kV to 18/30 kV – Copper conductor

Cross-Section In ground (direct) In ground (duct) In air
(mm2) Trefoil Flat Trefoil Flat Trefoil Flat touching Flat spaced
16 106 109 99 100 116 119 138
25 136 140 128 129 153 156 181
35 162 167 153 154 186 190 221
50 192 198 181 183 224 229 266
70 234 242 222 224 280 287 334
95 280 289 266 269 343 352 409
120 319 329 303 306 398 407 474
150 357 369 341 344 454 465 540
185 403 417 386 390 522 534 621
240 467 484 449 454 619 634 736
300 526 545 509 515 712 728 843
400 597 618 580 588 825 843 977

Table B.5

Current ratings for single-core cables with EPR insulation – Rated voltage 3,6/6 kV to 18/30 kV – Aluminium conductor

Cross-Section In ground (direct) In ground (duct) In air
(mm2) Trefoil Flat Trefoil Flat Trefoil Flat touching Flat spaced
16 82 84 77 78 90 92 107
25 105 109 99 100 119 121 141
35 126 130 118 120 144 147 171
50 149 153 140 142 174 178 207
70 182 188 172 174 218 223 259
95 217 224 206 208 266 273 317
120 247 256 235 238 309 317 368
150 277 287 264 267 352 361 419
185 314 325 300 303 406 417 484
240 364 377 350 354 483 495 575
300 411 426 397 401 556 570 659
400 471 487 456 462 651 667 770

Table B.6

Current rating for three-core XLPE insulated cables – Rated voltage 3,6/6 kV to 18/30 kV – Copper conductor, armoured and unarmoured

Cross-Section Unarmoured Armoured
(mm2) Buried direct Buried in ducts In air Buried direct Buried in ducts In air
16 101 87 109 101 88 110
25 129 112 142 129 112 143
35 153 133 170 154 134 172
50 181 158 204 181 158 205
70 221 193 253 220 194 253
95 262 231 304 263 232 307
120 298 264 351 298 264 352
150 334 297 398 332 296 397
185 377 336 455 374 335 453
240 434 390 531 431 387 529
300 489 441 606 482 435 599
400 553 501 696 541 492 683

Table B.7

Current rating for three-core XLPE insulated cables – Rated voltage 3,6/6 kV to 18/30 kV – Aluminium conductor, armoured and unarmoured

Cross-Section Unarmoured Armoured
(mm2) Buried direct Buried in ducts In air Buried direct Buried in ducts In air
16 78 67 84 78 68 85
25 100 87 110 100 87 111
35 119 103 132 119 104 133
50 140 122 158 140 123 159
70 171 150 196 171 150 196
95 203 179 236 204 180 238
120 232 205 273 232 206 274
150 260 231 309 259 231 309
185 294 262 355 293 262 354
240 340 305 415 338 304 415
300 384 346 475 380 343 472
400 438 398 552 432 393 545

Table B.8

Current rating for three-core EPR insulated cables – Rated voltage 3,6/6 kV to 18/30 kV – Copper conductor, armoured and unarmoured

Cross-Section Unarmoured Armoured
(mm2) Buried direct Buried in ducts In air Buried direct Buried in ducts In air
16 98 84 104 98 85 104
25 125 109 135 125 109 136
35 150 130 164 150 131 164
50 176 154 195 177 155 197
70 216 189 243 216 190 244
95 258 227 296 257 227 296
120 292 258 339 292 259 339
150 328 291 385 327 291 385
185 371 330 441 368 328 439
240 429 384 519 424 381 513
300 482 434 590 475 429 583
400 545 494 678 534 485 666

Table B.9

Current rating for three-core EPR insulated cables – Rated voltage 3,6/6 kV to 18/30 kV – Aluminium conductor, armoured and unarmoured

Cross-Section Unarmoured Armoured
(mm2) Buried direct Buried in ducts In air Buried direct Buried in ducts In air
16 76 65 80 76 66 81
25 97 84 105 97 85 105
35 116 101 127 116 101 127
50 137 119 151 137 120 153
70 167 147 189 168 147 190
95 200 176 229 200 176 230
120 227 201 263 227 201 264
150 255 226 299 254 226 300
185 289 257 343 288 257 343
240 335 300 406 332 299 402
300 378 340 462 374 338 459
400 432 392 538 426 387 530

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