Duct Bank Ampacity – Table D11 (Aluminum)
Allowable aluminum conductor ampacities for cables rated not more than 5000 V and unshielded for the
installation configurations of Diagram D11
installation configurations of Diagram D11
| Size | 1/Phase | 75 C Derating | 2/Phase | 75 C Derating | 3/Phase | 75 C Derating | 4/Phase | 75 C Derating | 5/Phase | 75 C Derating | 6/Phase | 75 C Derating | 8/Phase | 75 C Derating |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/0 | 157 | 139 | 143 | 127 | 131 | 116 | 122 | 108 | 114 | 101 | 108 | 96 | 101 | 89 |
| 2/0 | 179 | 159 | 162 | 144 | 148 | 131 | 138 | 122 | 129 | 114 | 122 | 108 | 114 | 101 |
| 3/0 | 205 | 182 | 184 | 163 | 168 | 149 | 157 | 139 | 146 | 129 | 138 | 122 | 129 | 114 |
| 4/0 | 235 | 208 | 210 | 186 | 192 | 170 | 178 | 158 | 165 | 146 | 156 | 138 | 146 | 129 |
| 250 | 258 | 229 | 231 | 205 | 210 | 186 | 195 | 173 | 180 | 159 | 171 | 152 | 159 | 141 |
| 300 | 286 | 253 | 255 | 226 | 232 | 206 | 215 | 190 | 199 | 176 | 188 | 167 | 175 | 155 |
| 350 | 312 | 276 | 278 | 246 | 252 | 223 | 233 | 206 | 215 | 190 | 204 | 181 | 189 | 167 |
| 400 | 337 | 299 | 299 | 265 | 271 | 240 | 250 | 222 | 231 | 205 | 218 | 193 | 203 | 180 |
| 500 | 382 | 338 | 337 | 299 | 305 | 270 | 281 | 249 | 259 | 229 | 245 | 217 | 227 | 201 |
| 600 | 424 | 376 | 373 | 330 | 336 | 298 | 309 | 274 | 285 | 253 | 269 | 238 | 249 | 221 |
| 750 | 478 | 424 | 419 | 371 | 376 | 333 | 346 | 307 | 318 | 282 | 300 | 266 | 278 | 246 |
| 900 | 527 | 467 | 459 | 407 | 412 | 365 | 378 | 335 | 347 | 307 | 327 | 290 | 303 | 268 |
| 1000 | 555 | 492 | 483 | 428 | 433 | 384 | 397 | 352 | 364 | 323 | 343 | 304 | 318 | 282 |
| 1250 | 626 | 555 | 541 | 479 | 482 | 427 | 441 | 391 | 404 | 358 | 380 | 337 | 351 | 311 |
| 1500 | 679 | 602 | 585 | 518 | 520 | 461 | 475 | 421 | 435 | 385 | 409 | 362 | 377 | 334 |
| 1750 | 724 | 641 | 621 | 550 | 552 | 489 | 503 | 446 | 461 | 408 | 432 | 383 | 399 | 354 |
| 2000 | 777 | 688 | 646 | 572 | 573 | 508 | 522 | 462 | 477 | 423 | 448 | 397 | 413 | 366 |
Disclaimer: Consultation with a Professional Advised
The information provided here is for general informational purposes only and should not be considered as professional advice. It is essential to consult with a qualified professional or specialist before making any decisions based on the information provided. Individual circumstances and requirements vary, and a professional can provide personalized advice tailored to your specific situation. Reliance on any information provided herein is solely at your own risk.