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250 ft. 12/3 Romex® SIMpull® NM-B W/G Wire

QC Part #
MFR # 63947655
In stock

Southwire's Romex® SIMpull® Type NM-B 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 Code1. 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 subject to excessive moisture or dampness.


  • Non-metallic Sheathed Cable
  • Copper Conductors
  • Color-Coded Jacket SIM Jacket™
  • Construction Designed for Easier Pulling
  • Four Conductor Available With Two Neutrals
  • Pulls Faster
  • Strips Easier
  • Reduced Burn-Thru
  • Tear Resistant


  • Heat Capacity: 90°C
  • Color: Yellow
  • Gauge: 12
  • Conductors: 3
  • Strands: 1
  • Max Volt: 600
  • Length: 250'
  • Weight: 26.75 lbs.



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