TRANSMISSION LINE CONDUCTOR AMPACITIES

This table is adopted from REA Design Bulletins and is not meant to be all-inclusive.  The lowest ampacity stranding has been chosen.  In general there is no more than 20-30 amperes difference between the various strandings

Ampacity

AWG
or kcmil
ACSR
Stranding
Sun
No Wind
No Wind
No Sun
Sun
Wind
Wind
No Sun
1/0 6/1 150 175 240 255
2/0 6/1 175 205 275 295
3/0 6/1 205 240 315 340
4/0 6/1 240 275 365 390
266.8 18/1 300 345 445 480
336.4 18/1 350 405 515 560
397.5 18/1 390 460 575 620
477.0 18/1 440 520 640 700
556.5 18/1 490 580 710 770
636.0 24/7 550 650 780 860
795.0 45/7 630 750 890 970
954.0 45/7 720 850 970 1070
1192 45/7 830 990 1120 1240
1272 45/7 870 1030 1160 1290
1431 45/7 940 1120 1250 1390
1590 45/7 1010 1200 1340 1490
1780 84/19 1090 1300 1440 1600
2156 84/19 1230 1480 1610 1810
Non-ACSR aluminum conductors are within a few amps of the above values