Single Conductors - In Air

Single conductor cable in air

Single conductor cable
in air

Open circuited shield operation, i.e. shields bonded and grounded at one point only.

Air ambient temperature is 40°C. Any load factor from 30 to 100%.

The ampacities are for a single, loaded cable in still air. In a group of loaded cables in close proximity in air, exposed or enclosed, follow the correction method shown on the ampacity correction factors page.

 

One cable per support or messenger

Copper

Conductor
Size
AWG-kcmil

Non-Shielded

Shielded

600-5000
Volts Ampacity

2001-5000
Volts Ampacity

5001-15,000
Volts Ampacity

15,001-35,000
Volts Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

8.........
6
.........
4
.........
2
.........
1
.........
1/0
.........
2/0
.........
3/0
.........
4/0
.........
250
.........
350
.........
500
.........
750
.........
1000.........
1250.........
1500.........
1750.........
2000.........

83.........
109
.........
145
.........
192
.........
223
.........
258
.........
298
.........
345
.........
400
.........
445
.........
552
.........
695
.........
898
.........
1076
.........
1228
.........
1367
.........
1493
.........
1606
.........

83...
110
...
145
...
190
...
225
...
260
...
300
...
345
...
400
...
445
...
550
...
695
...
900
...
1075
...
1230
...
1365
...
1495
...
1605
...

93...
120
...
160
...
215
...
250
...
290
...
330
...
385
...
445
...
495
...
615
...
775
...
1000
...
1200
...
1370
...
1525
...
1665
...
1790
...

...
110
...
150
...
195
...
225
...
260
...
300
...
345
...
400
...
445
...
550
...
685
...
885
...
1060
...
1210
...
1345
...
1470
...
1575
...

...
125
...
165
...
215
...
250
...
290
...
335
...
385
...
445
...
495
...
610
...
765
...
990
...
1185
...
1350
...
1500
...
1640
...
1755
...

...
...
...
...
225
...
260
...
300
...
345
...
395
...
440
...
545
...
680
...
870
...
1040
...
1185
...
1315
...
1430
...
1535
...

...
...
...
...
250
...
290
...
330
...
380
...
445
...
490
...
605
...
755
...
970
...
1160
...
1320
...
1465
...
1595
...
1710
...

Aluminum

Conductor
Size
AWG-kcmil

Non-Shielded

Shielded

600-5000
Volts Ampacity

2001-5000
Volts Ampacity

5001-15,000
Volts Ampacity

15,001-35,000
Volts Ampacity

90° C
(194°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

90° C
(194°F)

105°C
(221°F)

8.........
6
.........
4
.........
2
.........
1
.........
1/0
.........
2/0
.........
3/0
.........
4/0
.........
250
.........
350
.........
500
.........
750
.........
1000.........
1250.........
1500.........
1750.........
2000.........

64.........
85
.........
113
.........
150
.........
174
.........
201
.........
232
.........
269
.........
312
.........
347
.........
431
.........
544
.........
707
.........
853
.........
982
.........
1103
.........
1216
.........
1321
.........

64...
85
...
115
...
150
...
175
...
200
...
230
...
270
...
310
...
345
...
430
...
545
...
710
...
855
...
980
...
1105
...
1215
...
1320
...

71...
95
...
125
...
165
...
195
...
225
...
260
...
300
...
350
...
385
...
480
...
605
...
790
...
950
...
1095
...
1230
...
1355
...
1475
...

...
87
...
115
...
150
...
175
...
200
...
235
...
270
...
310
...
345
...
430
...
535
...
700
...
840
...
970
...
1085
...
1195
...
1295
...

...
97
...
130
...
170
...
195
...
225
...
260
...
300
...
350
...
385
...
480
...
600
...
780
...
940
...
1080
...
1215
...
1335
...
1445
...

...
...
...
...
175
...
200
...
230
...
270
...
310
...
345
...
430
...
530
...
685
...
825
...
950
...
1060
...
1165
...
1265
...

...
...
...
...
195
...
225
...
260
...
300
...
345
...
380
...
475
...
590
...
765
...
920
...
1055
...
1180
...
1300
...
1410
...