Permissible Current of Copper Aluminum Conductors
Current carrying capacities of P.V.C Insulated 600 / 1000 Volt cables with copper alumimium conductors
| – Current carrying capacities of P.V.C Insulated 600 / 1000 Volt cables with copper alumimium conductors in accordance with the 15th edition of the wiring regulation for electrical installation. – Basic assumption ambient temperature of 30 °C – Circuit is protected by a klockner-Moeller circuit-breaker to BS 3871 part 1 or BS 4752 part 1 , or a fuse to BS 88 or Bs 1361 – Figures must be adjusted by the correction factors for ambient temperature and / or cable grouping as detailed in the IEE Regs | ||||||||||||
| CONDUCTOR SIZE | IN CONDUCTOR TRUNKING ( ENCLOSED ) | CLIPPED TO SURFACE OR
CABLE TRAY , BUNCHED EMBEDDED IN PLASTER ( UN-ENCLOSED ) | FIXED TO VERTICAL WALL OR OPEN CABLE TRENCH WITH 20 mm SEPARATION BETWEEN CABLES AND WALL | |||||||||
| mm2 | Single – phase | Three – phase | Single – phase | Three – phase | Single – phase | Three – phase | ||||||
| Cu | Al | Cu | Al | Cu | Al | Cu | Al | Cu | Al | Cu | Al | |
| Single core , PVC insulated cabled , non-armoured , copper or aluminum conductors | ||||||||||||
| 1.0 | 14 | – | 12 | – | 17 | – | 16 | – | – | – | – | – |
| 1.5 | 17 | – | 14 | – | 21 | – | 20 | – | – | – | – | – |
| 2.5 | 24 | – | 21 | – | 30 | – | 26 | – | – | – | – | – |
| 4 | 32 | – | 29 | – | 40 | – | 38 | – | – | – | – | – |
| 6 | 41 | – | 37 | – | 50 | – | 45 | – | – | – | – | – |
| 10 | 55 | – | 51 | – | 68 | – | 61 | – | – | – | – | – |
| 16 | 74 | 60 | 66 | – | 90 | 72 | 81 | 65 | – | – | – | – |
| 25 | 97 | 78 | 87 | 52 | 118 | 94 | 106 | 85 | – | – | – | – |
| 35 | 119 | 96 | 106 | 67 | 145 | 115 | 130 | 105 | – | – | – | – |
| 50 | 145 | 120 | 125 | 83 | 175 | 143 | 160 | 123 | 195 | 155 | 170 | 140 |
| 70 | 185 | 150 | 160 | 100 | 220 | 181 | 200 | 156 | 240 | 190 | 210 | 170 |
| 95 | 230 | 175 | 195 | 125 | 270 | 223 | 240 | 193 | 300 | 235 | 260 | 205 |
| 120 | 260 | 205 | 220 | 150 | 310 | 261 | 280 | 225 | 350 | 275 | 300 | 235 |
| 150 | – | 235 | – | 175 | 355 | 298 | 320 | 259 | 410 | 320 | 350 | 270 |
| 185 | – | – | – | 200 | 405 | 345 | 365 | 290 | 470 | 370 | 400 | 310 |
| 240 | – | – | – | – | 480 | 411 | 430 | 361 | 560 | 440 | 480 | 370 |
| 300 | – | – | – | – | 560 | 476 | 500 | 419 | 660 | 910 | 570 | 435 |
| 400 | – | – | – | – | 680 | 554 | 610 | 465 | 800 | 584 | 680 | 490 |
| 500 | – | – | – | – | 800 | 643 | 710 | 541 | 910 | 677 | 770 | 570 |
| 630 | – | – | – | – | 910 | 737 | 820 | 616 | 1040 | 776 | 880 | 648 |
| Twin and multi-core , PVC insulated cable , non-armoured , copper or aluminum conductors | ||||||||||||
| 1.0 | 14 | – | 12 | – | 16 | – | 13 | – | – | – | – | – |
| 1.5 | 18 | – | 16 | – | 20 | – | 17 | – | – | – | – | – |
| 2.5 | 24 | – | 21 | – | 28 | – | 24 | – | – | – | – | – |
| 4 | 32 | – | 29 | – | 36 | – | 32 | – | – | – | – | – |
| 6 | 40 | – | 36 | – | 46 | – | 40 | – | – | – | – | – |
| 10 | 53 | – | 49 | – | 64 | – | 54 | – | – | – | – | – |
| 16 | 70 | – | 62 | – | 85 | 62 | 71 | 53 | – | 65 | – | 55 |
| 25 | 79 | – | 70 | – | 108 | 82 | 90 | 70 | 114 | 86 | 95 | 74 |
| 35 | 98 | – | 86 | – | 132 | 102 | 115 | 86 | 139 | 107 | 122 | 91 |
| 50 | – | – | – | – | 163 | 120 | 140 | 106 | 172 | 125 | 148 | 110 |
| 70 | – | – | – | – | 207 | 150 | 176 | 133 | 218 | 158 | 186 | 139 |
| 95 | – | – | – | – | 251 | 185 | 215 | 163 | 265 | 195 | 227 | 172 |
| 120 | – | – | – | – | 290 | – | 251 | 190 | 306 | – | 265 | 200 |
| 150 | – | – | – | – | 330 | – | 287 | 217 | 348 | – | 302 | 227 |
| 185 | – | – | – | – | 380 | – | 330 | 247 | 400 | – | 348 | 260 |
| 240 | – | – | – | – | 450 | – | 392 | 295 | 474 | – | 413 | 311 |
| 300 | – | – | – | – | 520 | – | 450 | 340 | 548 | – | 474 | 358 |
| 400 | – | – | – | – | 600 | – | 520 | – | 632 | – | 548 | – |