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Concentric Wire

Specifications and Standards

  • ASTM - B 3: Specification for soft or annealed copper wire
  • ASTM - B 8: Specification of concentric lay stranded copper conductors, hard, medium hard, or soft

Construction

  • Sranded Bare Copper

Applications

  • In overhead electrical transmission and distrubution systems, uninsulated hook up, jumpers and for grounding electrical systems

7 Strand Construction

Size(AWG/MCM)
Conductor Diameter Approx.
(inches) (mm)
Weight Approximate
lb/1000ft kg/km
8 0.146 3.70 50 75
6 0.184 4.66 81 120
4 0.232 5.88 128 191
3 0.260 6.61 162 241
2 0.292 7.42 204 304
1 0.328 8.33 258 384
1/0 0.368 9.36 325 484
2/0 0.413 10.48 410 611
3/0 0.464 11.79 518 771
4/0 0.522 13.25 653 972

19 Strand Construction

Size(AWG/MCM)
Conductor Diameter Approx.
(inches) (mm)
Weight Approximate
lb/1000ft kg/km
3 0.262 6.68 151 224
2 0.295 7.50 205 305
1 0.332 8.43 258 383
1/0 0.372 9.46 326 485
2/0 0.418 10.63 411 611
3/0 0.470 11.94 518 770
4/0 0.527 13.40 653 971
250 0.573 14.57 772 1148
300 0.628 15.95 926 1378
350 0.678 17.23 1081 1608
400 0.726 18.44 1235 1837
500 0.811 20.60 1544 2297

37 Strand Construction

Size(AWG/MCM)
Conductor Diameter Approx.
(inches) (mm)
Weight Approximate
lb/1000ft kg/km
1/0 0.373 9.49 325 484
2/0 0.420 10.67 411 611
3/0 0.471 11.96 517 769
4/0 0.529 13.44 653 971
250 0.575 14.61 772 1148
300 0.630 16.00 926 1378
350 0.681 17.30 1081 1608
400 0.728 18.49 1235 1837
500 0.813 20.66 1544 2297
600 0.891 22.63 1852 2756

61 Strand Construction

Size(AWG/MCM)
Conductor Diameter Approx.
(inches) (mm)
Weight Approximate
lb/1000ft kg/km
4/0 0.530 13.46 660 982
250 0.576 14.63 771 1147
300 0.631 16.02 926 1378
350 0.681 17.30 1087 1617
400 0.729 18.51 1236 1839
500 0.814 20.68 1543 2296
600 0.893 22.32 1853 2757
750 0.998 25.35 2316 3446
1000 1.152 29.26 3086 4592
1250 1.288 32.71 3859 5743