Table 4E3A

Single-Core Armoured 90°C Thermosetting Insulated Cables, Non-Magnetic Armour

Current-carrying Capacity (amperes):

Ambient Temperature: 30°C
Conductor Operating Temperature: 90°C

Conductor
crosss-sectional

area
Reference Method C
(clipped direct)
Reference Method F
(in free air or on a perforated cable tray, horizontal or vertical)
Touching Touching Spaced by one cable diameter
2 cables, single-phase a.c. or d.c. flat 3 or 4 cables, three-phase a.c. flat 2 cables, single-phase a.c. or d.c. flat 3 cables, three-phase a.c. or d.c. flat 3 cables, three-phase a.c. or d.c. trefoil 2 cables, d.c. 2 cables,
single-phase a.c.
3 or 4 cables,
three-phase a.c.
Horizontal Vertical Horizontal Vertical 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)
50 237 220 253 232 222 284 270 282 266 288 266
70 303 277 322 293 285 356 349 357 337 358 331
95 367 333 389 352 346 446 426 436 412 425 393
120 425 383 449 405 402 519 497 504 477 485 449
150 488 437 516 462 463 600 575 566 539 549 510
185 557 496 587 524 529 688 660 643 614 618 574
240 656 579 689 612 625 815 782 749 714 715 666
300 755 662 792 700 720 943 906 842 805 810 755
400 853 717 899 767 815 1,137 1,094 929 889 848 797
500 962 791 1,016 851 918 1,314 1,266 1,032 989 923 871
630 1,082 861 1,146 935 1,027 1,528 1,474 1,139 1,092 992 940
800 1,170 904 1,246 987 1,119 1,809 1,744 1,204 1,155 1,042 978
1,000 1,261 961 1,345 1,055 1,214 2,100 2,026 1,289 1,238 1,110 1,041

Notes:

  1. 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).
  2. 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).

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