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Current Carrying Capacity Multi Core Cables -BS 7211

CURRENT CARRYING CAPACITY: MULTI-CORE CABLES-COPPER CONDUCTORS TO BS 7211

CONDUCTOR REFERENCE METHOD 4 REFERENCE METHOD 3 REFERENCE METHOD 1 REFERENCE METHOD 11 OR 13
CROSS SECTIONAL enclosed in conduit in enclosed in conduit on a clipped direct on a perforated cable tray
AREA thermally insulating wall etc wall or in trunking etc OR Free AIR
                 
                 
  one one one one one one one one
  2 core cable 3 or 4 core 2 core cables 3 or 4 core 2 core cable 3 or 4 core 2 core cable 3 or 4 core
  single phase cable three single phase cable three single phase cable three single phase cable three
  a.c or d.c phase a.c a.c or d.c phase a.c a.c or d.c phase a.c a.c or d.c phase a.c
                 
                 
mm2 A A A A A A A A
1 14.5 13 17 15 19 17 21 18
1.5 18.5 16.5 22 19.5 24 22 26 23
2.5 25 22 30 26 33 30 36 32
4 33 30 40 35 45 40 49 42
6 42 38 51 44 58 52 63 54
10 57 51 69 60 80 71 86 75
16 76 68 91 80 107 96 115 100
25 99 89 119 105 138 119 149 127
35 121 109 146 128 171 147 185 158
50 145 130 175 154 209 179 225 192
70 183 164 221 194 269 229 289 246
95 220 197 265 233 328 278 352 298
120 253 227 305 268 382 322 410 346
150 290 259 334 300 441 371 473 399
185 329 295 384 340 506 424 542 456
240 386 347 459 398 599 500 641 538
300 442 396 532 455 693 576 741 621
400 - - 625 536 803 667 865 741

REFERENCE METHODS OF INSTALLATION ARE DESCRIBED IN IEEE REGULATIONS & B.S. 7671

THESE ARE ALSO APPLICABLE TO CABLES WITH/WITHOUT CIRCUIT PROTECTIVE CONDUCTOR.

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