Southwire® Romex® Brand SIMpull® NM-B (nonmetallic-sheathed) cable may be used for both exposed and concealed work in normally dry locations at temperatures not to exceed 90°C (with ampacity limited to that for 60°C conductors) 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.
| Conductor | Ground Wire | |||||||||||
| Size (AWG or kcmil) | No. of Conductors | No. of Strands | Size (AWG) | No. of Grounds | No. of Strands | Nom. Width (mils) (mm) | Nom. Height (mils) (mm) | Insulation Thickness (mils) (mm) | Nom. OD (mils) (mm) | Nominal Total Weight (lbs/1000') (kgs/km) | Allowable Ampacity | |
| 288274 | 14 AWG 14 AWG | 2 2 | 1 1 | 14 14 | 1 1 | 1 1 | 360 9.15 | 162 4.12 | 15 0.38 | 57 85 | 15 15 | |
| 639468 | 14 AWG 14 AWG | 3 3 | 1 1 | 14 14 | 1 1 | 1 1 | 462 11.74 | 176 4.47 | 15 0.38 | 77 115 | 15 15 | |
| 550539 | 14 AWG 14 AWG | 4 4 | 1 1 | 14 14 | 1 1 | 1 1 | 15 0.38 | 335 8.53 | 91 135 | 15 15 | ||
| 550482 | 14 AWG 14 AWG | 2-2 2-2 | 1 1 | 14 14 | 1 1 | 1 1 | 15 0.38 | 335 8.53 | 91 136 | 15 15 | ||
| 288282 | 12 AWG 12 AWG | 2 2 | 1 1 | 12 12 | 1 1 | 1 1 | 410 10.42 | 178 4.54 | 15 0.38 | 82 122 | 20 20 | |
| 639476 | 12 AWG 12 AWG | 3 3 | 1 1 | 12 12 | 1 1 | 1 1 | 524 13.31 | 190 4.83 | 15 0.38 | 111 165 | 20 20 | |
| 550542 | 12 AWG 12 AWG | 4 4 | 1 1 | 12 12 | 1 1 | 1 1 | 15 0.38 | 380 9.67 | 132 196 | 20 20 | ||
| 550484 | 12 AWG 12 AWG | 2-2 2-2 | 1 1 | 12 12 | 1 1 | 1 1 | 15 0.38 | 380 9.67 | 132 197 | 20 20 | ||
| 288290 | 10 AWG 10 AWG | 2 2 | 1 1 | 10 10 | 1 1 | 1 1 | 493 12.54 | 209 5.33 | 20 0.51 | 124 184 | 30 30 | |
| 639484 | 10 AWG 10 AWG | 3 3 | 1 1 | 10 10 | 1 1 | 1 1 | 630 16.00 | 220 5.59 | 20 0.51 | 165 246 | 30 30 | |
| 555832 | 10 AWG 10 AWG | 4 4 | 1 1 | 10 10 | 1 1 | 1 1 | 20 0.51 | 464 11.80 | 202 301 | 30 30 | ||
| 288936 | 8 AWG 8 AWG | 2 2 | 7 7 | 10 10 | 1 1 | 1 1 | 617 15.69 | 272 6.91 | 30 0.76 | 188 279 | 40 40 | |
| 639492 | 8 AWG 8 AWG | 3 3 | 7 7 | 0 0 | 30 0.76 | 571 14.52 | 255 380 | 40 40 | ||||
| 288944 | 6 AWG 6 AWG | 2 2 | 7 7 | 10 10 | 1 1 | 1 1 | 657 16.71 | 308 7.82 | 30 0.76 | 252 375 | 55 55 | |
| 639500 | 6 AWG 6 AWG | 3 3 | 7 7 | 10 10 | 1 1 | 1 1 | 30 0.76 | 658 16.73 | 359 535 | 55 55 | ||
| 639682 | 4 AWG 4 AWG | 3 3 | 7 7 | 8 8 | 1 1 | 1 1 | 40 1.02 | 825 20.96 | 565 841 | 70 70 | ||
| 639708 | 2 AWG 2 AWG | 3 3 | 7 7 | 8 8 | 1 1 | 1 1 | 40 1.02 | 870 22.10 | 818 1217 | 95 95 | ||
Southwire Romex® Brand SIMpull® NM-B cable complies with the following:
Southwire Romex® Brand SIMpull® NM-B cable is manufactured as 2, 3, or 4 conductor cable, with a bare ground wire. Copper conductors are annealed (soft)copper. Stranded conductors are compressed stranded. Conductor insulation is 90°C-rated polyvinyl chloride (PVC), nylon jacketed. Romex® Brand SIMpull® NM-B cable is designed for easier pulling, resulting in easier installation. The cable jacket is color-coded for quick size identification; White - 14 AWG, Yellow - 12 AWG, Orange - 10 AWG, and Black - 8 AWG and 6 AWG.
