Southwire Romex® Brand SIMpull® Type NM-B (nonmetallic-sheathed) cable may be used for both exposed and concealed work in dry locations as specified in the National Electrical Code®. NM-B cable is primarily used in residential wiring as branch circuits for outlets, switches, and other loads. NM-B cable may be run in air voids of masonry block or tile walls where such walls are not wet or damp locations. Voltage rating for NM-B cable is 600 volts.
Cond. Size | Conductor Number | Cond. Strands | Diameter Over Conductor (in) (cm) | Inner Layer Thickness (mils) (mm) | Ground Size | Outer Layer Thickness (mils) (mm) | Approx. OD (in) (cm) | Copper Weight (lbs/1000') (kgs/km) | Approx. Weight (lbs/1000') (kgs/km) | |
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14 AWG
14 AWG
|
2.0
2.0
|
Solid
Solid
|
0.064
0.16
|
15
0.38
|
1x14
1x14
|
25
0.64
|
0.372 x 0.176
0.94 x 0.45
|
37
55
|
61
91
|
More Options |
14 AWG
14 AWG
|
3.0
3.0
|
Solid
Solid
|
0.064
0.16
|
15
0.38
|
1x14
1x14
|
25
0.64
|
0.478 x 0.176
1.21 x 0.45
|
49
73
|
81
121
|
More Options |
14 AWG
14 AWG
|
4
4
|
Solid
Solid
|
0.064
0.16
|
15
0.38
|
1x14
1x14
|
30
0.76
|
0.350
0.89
|
62
92
|
95
141
|
More Options |
14 AWG
14 AWG
|
4
4
|
Solid
Solid
|
0.064
0.16
|
20
0.51
|
1x14
1x14
|
30
0.76
|
0.350
0.89
|
62
92
|
96
143
|
More Options |
12 AWG
12 AWG
|
2
2
|
Solid
Solid
|
0.080
0.20
|
15
0.38
|
1x12
1x12
|
25
0.64
|
0.422 x 0.190
1.07 x 0.48
|
59
88
|
87
129
|
More Options |
12 AWG
12 AWG
|
3.0
3.0
|
Solid
Solid
|
0.080
0.20
|
15
0.38
|
1x12
1x12
|
25
0.64
|
0.524 x 0.190
1.33 x 0.48
|
79
118
|
115
171
|
More Options |
12 AWG
12 AWG
|
4
4
|
Solid
Solid
|
0.080
0.20
|
15
0.38
|
1x12
1x12
|
30
0.76
|
0.395
1.00
|
99
147
|
138
205
|
More Options |
12 AWG
12 AWG
|
4
4
|
Solid
Solid
|
0.080
0.20
|
20
0.51
|
1x12
1x12
|
30
0.76
|
0.395
1.00
|
99
147
|
138
205
|
More Options |
10 AWG
10 AWG
|
2
2
|
Solid
Solid
|
0.101
0.26
|
20
0.51
|
1x10
1x10
|
25
0.64
|
0.505 x 0.218
1.28 x 0.55
|
91
135
|
126
188
|
More Options |
10 AWG
10 AWG
|
3.0
3.0
|
Solid
Solid
|
0.101
0.26
|
20
0.51
|
1x10
1x10
|
25
0.64
|
0.630 x 0.220
1.60 x 0.56
|
122
182
|
168
250
|
More Options |
10 AWG
10 AWG
|
4
4
|
Solid
Solid
|
0.101
0.26
|
20
0.51
|
1x10
1x10
|
30
0.76
|
0.479
1.22
|
154
229
|
206
307
|
More Options |
8 AWG
8 AWG
|
2
2
|
7
7
|
0.141
0.36
|
30
0.76
|
1x10
1x10
|
30
0.76
|
0.628 x 0.278
1.60 x 0.71
|
132
196
|
190
283
|
More Options |
8 AWG
8 AWG
|
3
3
|
7
7
|
0.141
0.36
|
30
0.76
|
1x10
1x10
|
30
0.76
|
0.585
1.49
|
185
275
|
260
387
|
More Options |
6 AWG
6 AWG
|
2
2
|
7
7
|
0.177
0.45
|
30
0.76
|
1x10
1x10
|
30
0.76
|
0.700 x 0.314
1.78 x 0.80
|
192
286
|
260
387
|
More Options |
6 AWG
6 AWG
|
3
3
|
7
7
|
0.177
0.45
|
30
0.76
|
1x10
1x10
|
30
0.76
|
0.672
1.71
|
276
411
|
365
543
|
More Options |
4 AWG
4 AWG
|
3
3
|
7
7
|
0.225
0.57
|
40
1.02
|
1x8
1x8
|
30
0.76
|
0.843
2.14
|
440
655
|
575
856
|
More Options |
2 AWG
2 AWG
|
3
3
|
7
7
|
0.282
0.72
|
40
1.02
|
1x8
1x8
|
30
0.76
|
0.887
2.25
|
671
999
|
830
1235
|
* 2x2 construction
Cond. Size | Conductor Number | Min. Bend Radius (in) (cm) | Max Pull Tension (lbs) (kg) | DC Resistance at 25C (ohms/1000') (ohms/km) | AC Resistance at 75C (ohms/1000') (ohms/km) | Inductive Reactance (ohms/1000') (ohms/km) | Allowable Ampacity Raceway 75C | Allowable Ampacity Raceway 90C | |
More Options |
14 AWG
14 AWG
|
2.0
2.0
|
0.8
2.03
|
65
29.48
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
20
20
|
25
25
|
More Options |
14 AWG
14 AWG
|
3.0
3.0
|
0.9
2.29
|
98
44.45
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
20
20
|
25
25
|
More Options |
14 AWG
14 AWG
|
4
4
|
1.4
3.56
|
105
47.63
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
16
16
|
20
20
|
More Options |
14 AWG
14 AWG
|
4
4
|
1.4
3.56
|
105
47.63
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
16
16
|
20
20
|
More Options |
12 AWG
12 AWG
|
2
2
|
1.0
2.54
|
104
47.17
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
25
25
|
30
30
|
More Options |
12 AWG
12 AWG
|
3.0
3.0
|
1.1
2.79
|
156
70.76
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
25
25
|
30
30
|
More Options |
12 AWG
12 AWG
|
4
4
|
1.6
4.06
|
167
75.75
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
20
20
|
24
24
|
More Options |
12 AWG
12 AWG
|
4
4
|
1.6
4.06
|
167
75.75
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
20
20
|
24
24
|
More Options |
10 AWG
10 AWG
|
2
2
|
1.2
3.05
|
166
75.30
|
1.040
1.55
|
1.253
1.86
|
0.050
0.07
|
35
35
|
40
40
|
More Options |
10 AWG
10 AWG
|
3.0
3.0
|
1.3
3.30
|
249
112.94
|
1.040
1.55
|
1.253
1.86
|
0.050
0.07
|
35
35
|
40
40
|
More Options |
10 AWG
10 AWG
|
4
4
|
1.9
4.83
|
265
120.20
|
1.040
1.55
|
1.253
1.86
|
0.050
0.07
|
28
28
|
32
32
|
More Options |
8 AWG
8 AWG
|
2
2
|
1.7
4.32
|
264
119.75
|
0.653
0.97
|
0.786
1.17
|
0.052
0.08
|
50
50
|
55
55
|
More Options |
8 AWG
8 AWG
|
3
3
|
2.3
5.84
|
396
179.62
|
0.653
0.97
|
0.786
1.17
|
0.052
0.08
|
50
50
|
55
55
|
More Options |
6 AWG
6 AWG
|
2
2
|
2.0
5.08
|
419
190.06
|
0.411
0.61
|
0.495
0.74
|
0.051
0.08
|
65
65
|
75
75
|
More Options |
6 AWG
6 AWG
|
3
3
|
2.7
6.86
|
629
285.31
|
0.411
0.61
|
0.495
0.74
|
0.051
0.08
|
65
65
|
75
75
|
More Options |
4 AWG
4 AWG
|
3
3
|
3.4
8.64
|
1001
454.05
|
0.258
0.38
|
0.310
0.46
|
0.048
0.07
|
85
85
|
95
95
|
More Options |
2 AWG
2 AWG
|
3
3
|
3.5
8.89
|
1592
722.12
|
0.162
0.24
|
0.195
0.29
|
0.045
0.07
|
115
115
|
130
130
|
* Ampacities based upon 2023 NEC Table 310.16 and do not take into account the overcurrent protection limitations in NEC 240.4(D) of 15 Amps for 14 AWG CU, 20 Amps for 12 AWG CU, and 30 Amps for 10 AWG CU (independent of the conductor temperature rating and stranding if size is present in table). Also, see NEC sections 310.15 and 110.14(C) for additional requirements.
* Inductive impedance is based on non-ferrous conduit with one diameter spacing center-to-center.