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Aluminum Conductor Characteristics

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All-aluminum conductor characteristics:

Aluminum Conductors - Properties
AWGkcmilStrandsDiameter
(in)		GMR
(ft)
Resistance (ohm/1000 ft)		Breaking Strength
(lb)		Weight
(lb/1000 ft)
dc
20°C		60 Hz ac
25°C		60 Hz ac
50°C
6 26.2 7 0.184 0.0056 0.659 0.673 0.739 563 24.6
4 41.7 7 0.232 0.007 0.414 0.423 0.465 881 39.1
2 66.4 7 0.292 0.0088 0.260 0.266 0.293 1350 62.2
1 83.7 7 0.328 0.0099 0.207 0.211 0.232 1640 78.4
1/0 106 7 0.368 0.0111 0.164 0.167 0.184 1990 98.9
2/0 133 7 0.414 0.0125 0.130 0.133 0.146 2510 125
3/0 168 7 0.464 0.014 0.103 0.105 0.116 3040 157
4/0 212 7 0.522 0.0158 0.0817 0.0835 0.0917 3830 198
250 7 0.567 0.0171 0.0691 0.0706 0.0777 4520 234
250 19 0.574 0.0181 0.0693 0.0706 0.0777 4660 234
267 7 0.586 0.0177 0.0647 0.0663 0.0727 4830 250
267 19 0.593 0.0187 0.0648 0.0663 0.0727 4970 250
300 19 0.629 0.0198 0.0575 0.0589 0.0648 5480 281
336 19 0.666 0.021 0.0513 0.0527 0.0578 6150 316
350 19 0.679 0.0214 0.0494 0.0506 0.0557 6390 328
398 19 0.724 0.0228 0.0435 0.0445 0.0489 7110 373
450 19 0.769 0.0243 0.0384 0.0394 0.0434 7890 422
477 19 0.792 0.025 0.0363 0.0373 0.0409 8360 447
477 37 0.795 0.0254 0.0363 0.0373 0.0409 8690 447
500 19 0.811 0.0256 0.0346 0.0356 0.039 8760 469
500 37 0.813 0.026 0.0346 0.0356 0.039 9110 468
557 19 0.856 0.027 0.0311 0.032 0.0352 9750 521
557 37 0.858 0.0275 0.0311 0.032 0.0352 9940 521
600 37 0.891 0.0285 0.0288 0.0297 0.0326 10700 562
636 37 0.918 0.0294 0.0272 0.0282 0.0309 11400 596
650 37 0.928 0.0297 0.0266 0.0275 0.0301 11600 610
700 37 0.963 0.0308 0.0247 0.0256 0.028 12500 656
700 61 0.964 0.031 0.0247 0.0256 0.028 12900 656
716 37 0.974 0.0312 0.0242 0.025 0.0275 12800 671
716 61 0.975 0.0314 0.0242 0.0252 0.0275 13100 671
750 37 0.997 0.0319 0.023 0.0251 0.0263 13100 703
750 61 0.998 0.0321 0.023 0.0251 0.0263 13500 703
795 37 1.03 0.0328 0.0217 0.0227 0.0248 13900 745
795 61 1.03 0.0331 0.0217 0.0227 0.0248 14300 746
875 37 1.08 0.0344 0.0198 0.0206 0.0227 15000 820
875 61 1.08 0.0347 0.0198 0.0206 0.0227 15800 821
900 37 1.09 0.0349 0.0192 0.0201 0.022 15400 844
900 61 1.09 0.0352 0.0192 0.0201 0.022 15900 844
954 37 1.12 0.036 0.0181 0.0191 0.0208 16400 895
954 61 1.13 0.0362 0.0181 0.0191 0.0208 16900 895
1000 37 1.15 0.0368 0.0173 0.0182 0.0199 17200 937
1000 61 1.15 0.0371 0.0173 0.0182 0.0199 17700 937
  • 1 ft = 0.3048 m
  • 1 kcmil = 1000 cmil = 785.4 10-6 in2 = 0.5067 mm2

GMR -  Geometric Mean Radius - quantifies a conductor’s internal inductance. By definition the GMR is the radius of an infinitely thin tube having the same internal inductance as the conductor out to a one-foot radius. GMR is often in feet to ease the calculations with distances measured in feet. Note that the GMR is less than the actual conductor radius.

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