NMWU Copper
Copper Conductors, 300V / -40ºC MIN, 60ºC MAX, PVC / Nylon Insulation, PVC Jacket
Application & Features
Southwire's CSA-NWMU cables may be used for underground installations, including direct burial. It may also be used for environments exposed to the weather in dry and wet locations. The maximum allowable conductor temperature is 60°C. The minimum recommended installation temperature is -40°C for two-conductor cables (sizes AWG 14 to AWG 6) and -25°C for all other sizes. For three-conductor cables the minimum recommended installation temperature is -10°C (with suitable handling procedures). Material should be properly stored above 0°C for 24 hours prior to installation. The maximum voltage rating for all intended applications is 300 volts. Consult the Canadian Electrical Code1 for further information related to applications.
Specifications
| 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) | |
| More Options |
14 AWG
14 AWG
|
2
2
|
Solid
Solid
|
0.064
0.16
|
35
0.89
|
1 x 14
1 x 14
|
30
0.76
|
0.244 x 0.492
0.62 x 1.25
|
37
55
|
88
131
|
| More Options |
14 AWG
14 AWG
|
3
3
|
Solid
Solid
|
0.064
0.16
|
35
0.89
|
1 x 14
1 x 14
|
30
0.76
|
0.504
1.28
|
50
74
|
117
174
|
| More Options |
12 AWG
12 AWG
|
2
2
|
Solid
Solid
|
0.080
0.20
|
35
0.89
|
1 x 14
1 x 14
|
30
0.76
|
0.261 x 0.526
0.66 x 1.34
|
51
76
|
109
162
|
| More Options |
12 AWG
12 AWG
|
3
3
|
Solid
Solid
|
0.080
0.20
|
35
0.89
|
1 x 14
1 x 14
|
30
0.76
|
0.544
1.38
|
72
107
|
148
220
|
| More Options |
10 AWG
10 AWG
|
2
2
|
Solid
Solid
|
0.101
0.26
|
35
0.89
|
1 x 12
1 x 12
|
30
0.76
|
0.282 x 0.585
0.72 x 1.49
|
82
122
|
146
217
|
| More Options |
10 AWG
10 AWG
|
3
3
|
Solid
Solid
|
0.101
0.26
|
35
0.89
|
1 x 12
1 x 12
|
30
0.76
|
0.595
1.51
|
115
171
|
200
298
|
| More Options |
8 AWG
8 AWG
|
2
2
|
7
7
|
0.143
0.36
|
40
1.02
|
1 x 10
1 x 10
|
45
1.14
|
0.382 x 0.775
0.97 x 1.97
|
133
198
|
253
377
|
| More Options |
8 AWG
8 AWG
|
3
3
|
7
7
|
0.143
0.36
|
40
1.02
|
1 x 10
1 x 10
|
45
1.14
|
0.794
2.02
|
186
277
|
344
512
|
| More Options |
6 AWG
6 AWG
|
2
2
|
7
7
|
0.179
0.45
|
50
1.27
|
1 x 8
1 x 8
|
45
1.14
|
0.448 x 0.948
1.14 x 2.41
|
213
317
|
375
558
|
| More Options |
6 AWG
6 AWG
|
3
3
|
7
7
|
0.179
0.45
|
50
1.27
|
1 x 8
1 x 8
|
45
1.14
|
0.954
2.42
|
297
442
|
513
763
|
| Cond. Size | Conductor Number | Min. Bend Radius (in) (cm) | 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
2
|
2.000
5.08
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
20
20
|
25
25
|
| More Options |
14 AWG
14 AWG
|
3
3
|
2.016
5.12
|
2.631
3.92
|
3.170
4.72
|
0.058
0.09
|
20
20
|
25
25
|
| More Options |
12 AWG
12 AWG
|
2
2
|
2.400
6.10
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
25
25
|
30
30
|
| More Options |
12 AWG
12 AWG
|
3
3
|
2.176
5.53
|
1.662
2.47
|
2.002
2.98
|
0.054
0.08
|
25
25
|
30
30
|
| More Options |
10 AWG
10 AWG
|
2
2
|
2.300
5.84
|
1.040
1.55
|
1.253
1.86
|
0.050
0.07
|
35
35
|
40
40
|
| More Options |
10 AWG
10 AWG
|
3
3
|
2.380
6.05
|
1.040
1.55
|
1.253
1.86
|
0.050
0.07
|
35
35
|
40
40
|
| More Options |
8 AWG
8 AWG
|
2
2
|
3.100
7.87
|
0.653
0.97
|
0.786
1.17
|
0.052
0.08
|
50
50
|
55
55
|
| More Options |
8 AWG
8 AWG
|
3
3
|
3.176
8.07
|
0.653
0.97
|
0.786
1.17
|
0.052
0.08
|
50
50
|
55
55
|
| More Options |
6 AWG
6 AWG
|
2
2
|
3.600
9.14
|
0.411
0.61
|
0.495
0.74
|
0.051
0.08
|
65
65
|
75
75
|
| More Options |
6 AWG
6 AWG
|
3
3
|
3.816
9.69
|
0.411
0.61
|
0.495
0.74
|
0.051
0.08
|
65
65
|
75
75
|
† 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.
† Ampacities have been adjusted for more than Three Current-Carrying Conductors.
* Inductive impedance is based on non-ferrous conduit with one diameter spacing center-to-center.
Standards & References
- ASTM B3 Soft or Annealed Copper Wire
- ASTM B8 Concentric-Lay-Stranded Copper Conductors
- ASTM B787 19 Wire Combination Unilay-Stranded Copper Conductors
- CSA C22.2 No. 48 non-metallic sheathed cable
- FT1 Flame Test (1,706 BTU/Hr nominal - Vertical Wire Flame Test)
Construction
- Conductor: Solid per ASTM B3 or Combination unilay-stranded copper conductors per ASTM B787.
- Insulation: All phases are insulated with heat-resistant thermoplastic polyvinyl chloride (PVC) insulation and nylon sheath
- Jacket: Polyvinyl Chloride PVC jacket, sunlight, moisture, and fungus-resistant