Metallic Conduit Size For Copper Wire

Metallic Conduit Size For Aluminum Wire

Line To Line Volts Drop Per Ampere Per 100 Feet In Magnetic Conduit Copper Wire

Wire

Size

Ampacity (75ºC) in Raceway in free air THW, THHN, THWN, XHHW - AMPS

THW

THHN THWN XHHW

Ampacity (75ºC) in Raceway in free air THW, THHN, THWN, XHHW- AMPS

THW

THHN THWN XHHW

1 Phase Volts

3 Phase Volts

3 Wires Max Inches

3 Phase 4 Wires Inches

3 Wires Max Inches

3 Phase 4 Wires Inches

3 Wires Max Inches

3 Phase 4 Wires Inches

3 Wires Max Inches

3 Phase 4 Wires Inches

95% PF

80% PF

95% PF

80% PF

14

20

N/A

N/A

1/2

1/2

N/A

N/A

N/A

N/A

N/A

.58

.50

.50

.43

12

25

N/A

N/A

1/2

1/2

N/A

N/A

N/A

N/A

N/A

.37

.31

.32

.27

10

35

N/A

N/A

1/2

1/2

N/A

N/A

N/A

N/A

N/A

.23

.20

.20

.17

8

50

3/4

1

1/2*

3/1

40

3/4

3/4

1/2

3/4

.15

.13

.13

.11

6

65

1

1

3/4

3/4+

50

3/4

1

3/4

3/4

.095

.084

.082

.073

4

85

1

1-1/4

1

1

65

1

1

3/4

1

.061

.055

.053

.048

3

100

1-1/4

1-1/4

1

1-1/4

N/A

N/A

N/A

N/A

N/A

.048

.045

.042

.039

2

115

1-1/4

1-1/4

1

1-1/4

90

1

1-1/4

1

1-1/4

.040

.037

.035

.032

1

130

1-1/4

1-1/2

1-1/4

1-1/2

100

1-1/4

1-1/2

1-1/4

1-1/4

.032

.030

.028

.026

1/0

150

1-1/2

2

1-1/4

1-1/2

120

1-1/4

1-1/2

1-1/4

1-1/2

.027

.027

.023

.023

2/0

175

1-1/2

2

1-1/2

2

135

1-1/2

2

1-1/4

1-1/2

.022

.022

.019

.019

3/0

200

2

2

1-1/2

2

155

1-1/2

2

1-1/2

2

.017

.018

.015

.016

4/0

230

2

2 1/2

2

2

180

2

2

1-1/2

2

.015

.016

.013

.014

250

255

2-1/2

2-1/2

2

2-1/2

205

2

2-1/2

2

2

.013

.014

.011

.012

300

285

2-1/2

3

2

2-1/2

230

2

2-1/2

2

2-1/2

.012

.013

.010

.011

350

310

2-1/2

3

2-1/2

3

250

2-1/2

3

2

2-1/2

.010

.012

.0088

.010

400

335

3

3

2-1/2

3

270

2-1/2

3

2-1/2

2-1/2♦

.0094

.011

.0081

.0095

500

380

3

3-1/2

3

3

310

3

3

2-1/2

3

.0082

.0098

.0071

.0085

600

420

3

3-1/2

3

3-1/2

340

3

3-1/2

3

3

.0074

.0092

.0064

.0080

700

460

3-1/2

4

3

3-1/2

375

3

3-1/2

3

3-1/2

.0068

.0085

.0059

.0074

750

475

3-1/2

4

3-1/2

4

385

3

3-1/2

3

3-1/2

.0066

.0084

.0057

.0073

800

490

3-1/2

4

3-1/2

4

N/A

N/A

N/A

N/A

N/A

-

-

-

-

900

520

4

5

3-1/2

4

N/A

N/A

N/A

N/A

N/A

-

-

-

-

1000

545

4

5

3-1/2

5

445

3-1/2

4

3-1/2

4

-

-

-

-

 

    Click here for our Line Cards