Sq. In

Circ Mils Thousands

Skin Effect Ratio at 90 C

60 Hz Ampacity Amp*

Skin Effect Ratio at 90 C

60 Hz Ampacity Amp*

Skin Effect Ratio at 90 C

60 Hz Ampacity Amp*

1/16 x 1/2

.00312

39.7

.121

264.0

1.00

103

1.00

136

1.00

157

1/16 x 3/4

.0469

59.7

.181

175.0

1.00

145

1.00

193

1.00

225

1/16 x 1

.0625

79.6

.241

132

1.00

187

1.00

250

1.00

285

1/16 x 1 1/2

.0938

119

.362

87.7

1.00

270

1.00

355

1.00

410

1/16 x 2

.125

159

.483

65.8

1.01

345

1.01

460

1.01

530

1/8 x 1/2

.0625

79.6

.241

132

1.00

153

1.00

205

1.00

235

1/8 x 3/4

.0938

119

.362

87.7

1.00

215

1.00

285

1.00

325

1/8 x 1

.125

159

.483

65.8

1.01

270

1.01

360

1.01

415

1/8 x 1 1/2

.188

239

.726

43.8

1.01

385

1.01

510

1.01

590

1/8 x 2

.250

318

.966

32.9

1.02

495

1.02

660

1.02

760

1/8 x 2 1/2

.312

397

1.21

26.4

1.02

600

1.02

800

1.02

920

1/8 x 3

.375

477

1.45

21.9

1.03

710

1.03

940

1.03

1100

1/8 x 3 1/2

.438

558

1.69

18.8

1.04

810

1.03

1100

1.03

1250

1/8 x 4

.500

636

1.93

16.5

1.04

900

1.04

1200

1.04

1400

3/16 x 1/2

.0938

119

.362

87.7

1.00

195

1.00

260

1.00

300

3/16 x 3/4

.141

179

.545

58.4

1.01

270

1.01

360

1.01

415

3/16 x 1

.188

239

.726

43.8

1.01

340

1.01

455

1.01

520

3/16 x 1 1/2

.281

358

1.09

29.3

1.02

480

1.02

630

1.02

730

3/16 x 2

.375

477

1.45

21.9

1.03

610

1.03

810

1.03

940

3/16 x 2 1/2

.469

597

1.81

17.5

1.04

740

1.04

980

1.03

1150

3/16 x 3

.562

715

2.17

14.6

1.05

870

1.05

1150

1.04

1350

3/16 x 3 1/2

.656

835

2.53

12.5

1.07

990

1.06

1300

1.06

1500

3/16 x 4

.750

955

2.90

11.0

1.09

1100

1.08

1450

1.07

1700

1/4 x 1/2

.125

159

.483

65.8

1.01

240

1.01

315

1.01

360

1/4 x 3/4

.188

239

.726

43.8

1.01

320

1.01

425

1.01

490

1/4 x 1

.250

318

.966

32.9

1.02

400

1.02

530

1.02

620

1/4 x 1 1/2

.375

477

1.45

21.9

1.03

560

1.03

740

1.03

860

1/4 x 2

.500

637

1.93

16.5

1.04

710

1.04

940

1.04

1100

1/4 x 2 1/2

.625

796

2.41

13.2

1.06

850

1.06

1150

1.06

1300

1/4 x 3

.750

955

2.90

11.0

1.08

990

1.08

1300

1.07

1550

1/4 x 3 1/2

.875

1110

3.38

9.40

1.10

1150

1.09

1500

1.09

1750

1/4 x 4

1.00

1270

3.86

8.23

1.12

1250

1.11

1700

1.10

1950

1/4 x 5

1.25

1590

4.83

6.58

1.16

1500

1.15

2000

1.14

2350

1/4 x 6

1.50

1910

5.80

5.49

1.18

1750

1.17

2350

1.17

2700

3/8 x 3/4

.281

358

1.09

29.3

1.02

415

1.02

550

1.02

630

3/8 x 1

.375

477

1.45

21.9

1.03

510

1.03

680

1.03

790

3/8 x 1 1/2

.562

715

2.17

14.6

1.05

710

1.04

940

1.04

1100

3/8 x 2

.750

955

2.90

11.0

1.08

880

1.08

1150

1.07

1350

3/8 x 2 1/2

.938

1190

3.62

8.77

1.12

1050

1.10

1400

1.09

1600

3/8 x 3

1.12

1430

4.35

7.35

1.15

1200

1.14

1600

1.13

1850

3/8 x 3 1/2

1.31

1670

5.06

6.38

1.18

1350

1.16

1800

1.15

2100

3/8 x 4

1.50

1910

5.80

5.49

1.20

1500

1.19

2000

1.18

2350

3/8 x 5

1.88

2390

7.26

4.38

1.24

1800

1.23

2400

1.22

2800

3/8 x 6

2.25

2860

8.69

3.66

1.27

2100

1.26

2800

1.24

3250

1/2 x 1

.500

637

1.93

16.5

1.04

620

1.04

820

1.04

940

1/2 x 1 1/2

.750

955

2.90

11.0

1.08

830

1.08

1100

1.07

1250

1/2 x 2

1.00

1270

3.86

8.23

1.12

1000

1.11

1350

1.10

1550

1/2 x 2 1/2

1.25

1590

4.83

6.58

1.16

1200

1.15

1600

1.14

1850

1/2 x 3

1.50

1910

5.80

5.49

1.20

1400

1.19

1850

1.18

2150

1/2 x 3 1/2

1.75

2230

6.76

4.70

1.24

1550

1.22

2100

1.21

2400

1/2 x 4

2.00

2550

7.73

4.11

1.26

1700

1.25

2300

1.24

2650

1/2 x 5

2.50

3180

9.66

3.29

1.32

2050

1.30

2750

1.29

3150

1/2 x 6

3.00

3820

11.6

2.74

1.36

2400

1.34

3150

1.33

3650

1/2 x 8

4.00

5090

15.5

2.06

1.42

3000

1.40

4000

1.39

4600