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LIST OF TABLES

Table No.

Title

1

Portable power cable ampacities—600 volts.

2

Portable cord ampacities—600 volts.

3

Portable power cable ampacities—601 to 5,000 volts.

4

Normal diameter of round cables with tolerances in inches—600 volts.

5

Nominal dimension of flat cables with tolerances in inches—600 volts.

6

Nominal diameter of heavy jacketed cords with tolerances in inches—600 volts.

7

Nominal diameter of three-conductor portable power cables with tolerances in inches—601 to 5,000 volts.

8

Fuse ratings or instantaneous settings of circuit breakers for short-circuit protection of portable cables.

9

Specifications for portable cables longer than 500 feet.

10

High voltage trailing cable ampacities and outside diameters.



Table 1—Portable Power Cable Ampacities—600 Volts (Amperes Per Conductor Based on 60 °C. Copper Temperature—40 °C. Ambient)

Conductor size—AWG or MCM

Single conductor

2-conductor, round or flat

3-conductor, round or flat

4-conductor

5-conductor

6-conductor

8

45

40

35

30

25

20

6

60

50

50

40

35

30

4

85

70

65

55

45

35

3

95

80

75

65

55

45

2

110

95

90

75

65

55

1

130

110

100

85

75

65

1/0

150

130

120

100

90

80

2/0

175

150

135

115

105

95

3/0

205

175

155

130

120

110

4/0

235

200

180

150

140

130

250

275

220

200

160

300

305

240

220

175

350

345

240

235

190

400

375

280

250

200

450

400

300

270

215

500

425

320

290

230



Table 2—Portable Cord Ampacities—600 Volts (Amperes Per Conductor Based on 60 °C. Copper Temperature—40 °C. Ambient)

Conductor size—AWG

1–3 conductor

4–6 conductor

7–9 conductor

14

15

12

8

12

20

16

11

10

25

20

14



Table 3—Portable Power Cable Ampacities—601 to 5,000 Volts (Amperes Per Conductor Based on 75 °C. Copper Temperature—40 °C. Ambient)

Conductor size—AWG or MCM

3-conductor types G-GC and SIIC-GC 2,000 volts

3-conductor type SHD-GC 2,001–5,000 volts

6

65

65

4

85

85

3

100

100

2

115

115

1

130

130

1/0

145

145

2/0

170

170

3/0

195

195

4/0

220

220

250

245

245

300

275

275

350

305

305



Table 4—Nominal Diameters of Round Cables With Tolerances in Inches—600 Volts

Conductor size—AWG or MCM

Single conductor

2-conductor

3-conductor

4-conductor—Types W & G

5-conductor—Types W & G

6-conductor

Types W & G twisted

Type PG, 2 power

Type PCG, 3 power, ground

Types W & G

Type PG, 3 power, ground

Type PCG, 3 power, 2 control, ground

Type w

Tolerance

8

0.44

0.81

0.84

0.94

0.91

0.93

1.03

0.99

1.07

1.18

±0.03

6

.51

.93

.93

.98

1.01

1.03

1.18

1.10

1.21

1.31

±.03

4

.57

1.08

1.08

1.10

1.17

1.20

1.29

1.27

1.40

1.52

±.03

3

.63

1.17

1.17

1.20

1.24

1.27

1.31

1.34

1.48

1.61

±.03

2

.66

1.27

1.27

1.29

1.34

1.34

1.39

1.48

1.61

1.75

±.03

1

.74

1.44

1.44

1.44

1.51

1.52

1.52

1.68

1.88

2.05

±.03

1/0

.77

1.52

1.52

1.52

1.65

1.68

1.68

1.79

1.96

2.13

±.04

2/0

.82

1.65

1.65

1.65

1.75

1.79

1.79

1.93

2.13

2.32

±.04

3/0

.87

1.77

1.77

1.77

1.89

1.93

1.93

2.07

2.26

2.49

±.05

4/0

.93

1.92

1.92

1.92

2.04

2.13

2.13

2.26

2.46

2.71

±.05

250

1.03

2.16

2.16

2.16

2.39

2.39

2.39

2.66

±.06

300

1.09

2.32

2.56

2.84

±.06

350

1.15

2.43

2.68

2.98

±.06

400

1.20

2.57

2.82

3.14

±.06

450

1.26

2.67

2.94

3.26

±.06

500

1.31

2.76

3.03

3.40

±.06



Table 5—Nominal Dimensions of Flat Cables With Tolerances in Inches—600 Volts


Conductor size—AWG

2-conductor

3-conductor—Type G

Type W

Type G

Major

Minor

Major

Minor

Major

Minor

O.D.

Tolerance

O.D.

Tolerance

O.D.

Tolerance

O.D.

Tolerance

O.D.

Tolerance

O.D.

Tolerance

8

0.84

±0.04

0.51

±0.03

6

.93

±.04

.56

±.03

1.02

±.04

0.56

±.03

1.65

±0.06

0.67

±0.05

4

1.05

±.04

.61

±.03

1.15

±.04

.61

±.03

1.85

±.06

.75

±.05

3

1.14

±.04

.68

±.03

1.26

±.04

.68

±.03

1.99

±.06

.77

±.05

2

1.24

±.04

.73

±.03

1.35

±.04

.73

±.06

2.10

±.06

.81

±.05

1

1.40

±.04

.81

±.03

1.55

±.04

.81

±.03

2.43

±.06

.97

±.05

1/0

1.51

±.04

.93

±.03

1.67

±.04

.93

±.03

2/0

1.63

±.04

.99

±.03

1.85

±.04

.99

±.03

3/0

1.77

±.04

1.03

±.03

2.00

±.04

1.03

±.03

4/0

1.89

±.04

1.10

±.03

2.10

±.04

1.10

±.03



Table 6—Nominal Diameters of Heavy Jacketed Cords With Tolerances In Inches—600 Volts


Conductor size—AWG

2-conductor

3-conductor

4-conductor

5-conductor

6-conductor

7-conductor

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

14

0.64

±0.02

0.67

±0.02

0.71

±0.02

0.78

±0.03

0.83

±0.03

0.89

±0.03

12

.68

±.02

.72

±.03

.76

±.03

.83

±.03

.89

±.03

.98

±.03

10

.73

±.03

.80

±.03

.84

±.03

.90

±.03

1.00

±.03

1.07

±.03



Table 7—Nominal Diameters of Three-Conductor Portable Power Cables With Tolerances in Inches—601 to 5,000 Volts


Conductor size—AWG or MCM

Type G-GC (nonshielded) 2,000 volts

Type SHC-GC (shielded overall) 2,000 volts

Type SHD-GC (individually shielded power conductors) 2,001–3,000 volts

Type SHD-GC (individually shielded power conductors) 3,001–5,000 volts

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

Diameter

Tolerance

6

1.25

+0.10, −0.06

1.39

+0.11, −0.07

1.62

+0.13, −0.08

1.78

+0.14, −0.09

4

1.40

+.11, −.07

1.55

+.12, −.08

1.77

+.14, −.09

1.90

+.15, −.10

3

1.48

+.12, −.07

1.62

+.13, −.08

1.84

+.15, −.09

1.98

+.16, −.10

2

1.55

+.12, −.08

1.71

+.14, −.09

1.92

+.15, −.10

2.09

+.17, −.11

1

1.74

+.14, −.09

1.89

+.15, −.09

2.04

+.16, −.10

2.18

+.17, −.11

1/0

1.84

+.15, −.09

2.02

+.16, −.10

2.18

+.17, −.11

2.34

+.19, −.12

2/0

1.99

+.16, −.10

2.16

+.17, −.11

2.29

+.18, −.12

2.46

+.20, −.12

3/0

2.12

+.17, −.11

2.30

+.18, −.11

2.45

+.20, −.12

2.62

+.21, −.13

4/0

2.30

+.18, −.12

2.48

+.20, −.12

2.62

+.21, −.13

2.76

+.22, −.14

250

2.46

+.20, −.12

2.70

+.22, −.13

300

2.63

+.21, −.13

2.84

+.23, −.14

350

2.75

+.22, −.14

2.97

+.24, −.15



Table 8—Fuse Ratings or Instantaneous Setting of Circuit Breakers for Short-Circuit Protection of Portable Cables and Cords


Conductor size—AWG or MCM

Ohms/1,000 ft. at 25 °C.

Maximum allowable fuse rating (amperes)

Maximum allowable circuit breaker instantaneous setting (amperes)1

14

2.62

20

50

12

1.65

30

75

10

1.04

40

150

8

.654

80

200

6

.410

100

300

4

.259

200

500

3

.205

250

600

2

.162

300

800

1

.129

375

1,000

1/0

.102

500

1,250

2/0

.081

1,500

3/0

.064

2,000

4/0

.051

2,500

250

.043

2,500

300

.036

2,500

350

.031

2,500

400

.027

2,500

450

.024

2,500

500

.022

2,500

1Higher circuit-breaker settings may be permitted for special applications when justified.


Table 9—Specifications for Portable Cables Longer Than 500 Feet1


Conductor size—AWG or MCM

Max. allowable length (feet)

Normal ampacity at 60 °C. copper temperature (40 °C. ambient)

Resistance at 60 °C. copper temperature (ohms)

6

550

50

0.512

4

600

70

.353

3

650

80

.302

2

700

95

.258

1

750

110

.220

1/0

800

130

.185

2/0

850

150

.157

3/0

900

175

.130

4/0

1,000

200

.116

250

1,000

220

.098

300

1,000

240

.082

350

1,000

260

.070

400

1,000

280

.061

450

1,000

300

.054

500

1,000

320

.050

1Fuses shall not be used for short-circuit protection of these cables. Circuit breakers shall be used with the instantaneous trip settings not to exceed the values given in Table 8.

 


Table 10—High Voltage Trailing Cable Ampacities and Outside Diameters


Power conductor

Ampacity*

Outside diameter**
(inches)

Size AWG or kcmil

Amperes per conductor

SHD–GC 2001 to 5000 volts

SHD–CGC 2001 to 5000 volts

SHD–PCG 2001 to 5000 volts

6

93

1.56

1.62

4

122

1.68

1.73

3

140

1.78

1.82

1.94

2

159

1.87

1.91

2.03

1

184

1.95

1.98

2.12

1/0

211

2.08

2.10

2.26

2/0

243

2.20

2.20

2.40

3/0

279

2.36

2.36

2.58

4/0

321

2.50

2.50

2.76

250

355

2.69

2.69

300

398

2.81

2.81

350

435

2.95

2.95

500

536

3.31

3.31

*These ampacities are based on single isolated conductor in air, operated with open-circuited shield for a 90 °C conductor temperature and an ambient temperature of 40 °C.

**Tolerances for the outside diameter are +8%/−5%.