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%.
|
