Single-Core 90°C Thermosetting Insulated Cables, Non-Armoured, with or without Sheath
Current-carrying Capacity (amperes): |
Ambient Temperature: 30°C
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| Conductor cross-sectional area |
Reference Method A (enclosed in conduit in thermally insulating wall etc.) | Reference Method B (enclosed in conduit on a wall or in trunking etc.) | Reference Method C (clipped direct) Spaced by one cable diameter |
Reference Method F (in free air or on a perforated cable tray etc horizontal or vertical etc.) | Reference Method G (in free air) | ||||||
| Touching | Spaced by one cable diameter | ||||||||||
| 2 cables, single-phase a.c. or d.c. | 3 or 4 cables, three-phase a.c. | 2 cables, single-phase a.c. or d.c. | 3 or 4 cables, three-phase a.c. | 2 cables, single-phase a.c. or d.c. flat and touching | 3 or 4 cables, three-phase a.c. flat and touching or trefoil | 2 cables, single-phase a.c. or d.c. flat | 3 cables, three-phase a.c. flat | 3 cables, three-phase a.c. trefoil | 2 cables, single-phase a.c. or d.c. or 3 cables three-phase a.c. flat | ||
| Horizontal | Vertical | ||||||||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| (mm2) | (A) | (A) | (A) | (A) | (A) | (A) | (A) | (A) | (A) | (A) | (A) |
| 1 | 14 | 13 | 17 | 15 | 19 | 17.5 | – | – | – | – | – |
| 1.5 | 19 | 17 | 23 | 20 | 25 | 23 | – | – | – | – | – |
| 2.5 | 26 | 23 | 31 | 28 | 34 | 31 | – | – | – | – | – |
| 4 | 35 | 31 | 42 | 37 | 46 | 41 | – | – | – | – | – |
| 6 | 45 | 40 | 54 | 48 | 59 | 54 | – | – | – | – | – |
| 10 | 61 | 54 | 75 | 66 | 81 | 74 | – | – | – | – | – |
| 16 | 81 | 73 | 100 | 88 | 109 | 99 | – | – | – | – | – |
| 25 | 106 | 95 | 133 | 117 | 143 | 130 | 161 | 141 | 135 | 182 | 161 |
| 35 | 131 | 117 | 164 | 144 | 176 | 161 | 200 | 176 | 169 | 226 | 201 |
| 50 | 158 | 141 | 198 | 175 | 228 | 209 | 242 | 216 | 207 | 275 | 246 |
| 70 | 200 | 179 | 253 | 222 | 293 | 268 | 310 | 279 | 268 | 353 | 318 |
| 95 | 241 | 216 | 306 | 269 | 355 | 326 | 377 | 342 | 328 | 430 | 389 |
| 120 | 278 | 249 | 354 | 312 | 413 | 379 | 437 | 400 | 383 | 500 | 454 |
| 150 | 318 | 285 | 393 | 342 | 476 | 4036 | 504 | 464 | 444 | 577 | 527 |
| 185 | 362 | 324 | 449 | 384 | 545 | 500 | 575 | 533 | 510 | 661 | 605 |
| 240 | 424 | 380 | 528 | 450 | 644 | 590 | 679 | 634 | 607 | 781 | 719 |
| 300 | 486 | 435 | 603 | 514 | 743 | 681 | 783 | 736 | 703 | 902 | 833 |
| 400 | – | – | 683 | 584 | 868 | 793 | 940 | 868 | 823 | 1,085 | 1,008 |
| 500 | – | – | 783 | 666 | 990 | 904 | 1,083 | 998 | 946 | 1,253 | 1,169 |
| 630 | – | – | 900 | 764 | 1,130 | 1,033 | 1,254 | 1,151 | 1,088 | 1,454 | 1,362 |
| 800 | – | – | – | – | 1,288 | 1,179 | 1,358 | 1,275 | 1,214 | 1,581 | 1,485 |
| 1,000 | – | – | – | – | 1,443 | 1,323 | 1,520 | 1,436 | 1,349 | 1,775 | 1,671 |
- Where it is intended to connect the cables in this table to equipment or accessories designed to operate at a temperature lower than the maximum operating temperature of the cable, the cables should be rated at the maximum operating temperature of the equipment or accessory (see Regulation 512.1.5).
- Where it is intended to group a cable in this table with other cables, the cable should be rated at the lowest of the maximum operating temperatures of any of the cables in the group (see Regulation 512.1.5).
- For cables having flexible conductors see section 2.4 of this appendix for adjustment factors for current-carrying capacity and voltage drop.
