EPR/XLPE Current Ratings (Aluminium)

From Open Electrical
Jump to: navigation, search

Current ratings are based on values given in IEC 60364-5-52 (2009), with a reference conductor temperature of 70oC, ambient temperature of 30oC and soil temperature of 20oC.

Two Loaded Conductors

Size ([math]mm^{2}[/math]) Current Rating for 2 x EPR or XLPE Insulated Aluminium Conductors
Reference Installation Method
A1 A2 B1 B2 C D1 D2 E F
2.5 20 19.5 25 23 26 26 28
4 27 26 33 31 35 33 38
6 35 33 43 40 45 42 49
10 48 45 59 54 62 55 67
16 64 60 79 72 84 71 76 91
25 84 78 105 94 101 90 98 108 121
35 103 96 130 115 126 108 117 135 150
50 125 115 157 138 154 128 139 164 184
70 158 145 200 175 198 158 170 211 237
95 191 175 242 210 241 186 204 257 289
120 220 201 281 242 280 211 233 300 337
150 253 230 307 261 324 238 261 346 389
185 288 262 351 300 371 267 296 397 447
240 338 307 412 358 439 307 343 470 530
300 387 352 471 415 508 346 386 543 613
400 740
500 856
630 996

Three Loaded Conductors

Size ([math]mm^{2}[/math]) Current Rating for 3 x EPR or XLPE Insulated Aluminium Conductors
Reference Installation Method
A1 A2 B1 B2 C D1 D2 E F G
Trefoil Laid Flat Horizontal Vertical
2.5 19 18 22 21 24 22 24
4 25 24 29 28 32 28 32
6 32 31 38 35 41 35 42
10 44 41 52 48 57 46 58
16 58 55 71 64 76 59 64 77
25 76 71 93 84 90 75 82 97 103 107 138 122
35 94 87 116 103 112 90 98 120 129 135 172 153
50 113 104 140 124 136 106 117 146 159 165 210 188
70 142 131 179 156 174 130 144 187 206 215 271 244
95 171 157 217 188 211 154 172 227 253 264 332 300
120 197 180 251 216 245 174 197 263 296 308 387 351
150 226 206 267 240 283 197 220 304 343 358 448 408
185 256 233 300 272 323 220 250 347 395 413 515 470
240 300 273 351 318 382 253 290 409 471 492 611 561
300 344 313 402 364 440 286 326 471 547 571 708 652
400 633 694 856 792
500 770 806 991 921
630 899 942 1154 1077

Back to Low Voltage Cable Data Reference