SPEC 22053


Copper Conductors, 300V / -40ºC MIN, 60ºC MAX, PVC / Nylon Insulation, PVC Jacket



  1. Conductor:Solid per ASTM B3 or Combination unilay-stranded copper conductors per ASTM B787.
  2. Insulation:All phases are insulated with Polyvinyl Chloride with Nylon Sheath
  3. Jacket:Polyvinyl Chloride PVC jacket utilizing SIMpull® Technology.

  • Conductor Colors: 2/C Black, White
  • Conductor Colors: 3/C Black, Red, White
  • Applications and 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.


  • 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)
  • Sample Print Legend:

    SOUTHWIRE MASTER-DESIGN CSA LL90458 12 AWG 2 CDRS BLACK/WHITE NMD90 NYLON ROMEX(R) BRAND SIMpull (TM) (-25C) 300 VOLTS FT1 COVERED & MADE UNDER U.S. PAT. NOS 7557301 & 7411129. [Jacket Colour is yellow]
    Table 1 – Weights and Measurements
    Stock NumberCond. SizeConductor NumberDiameter Over ConductorConductor StrandingInsulation ThicknessGround SizeJacket ThicknessApprox. ODOverall Weight
    AWG/KcmilinchmilsNo. x AWGmilinchlbs/1000ft
    4718471420.064Solid351 x 14300.244 x 0.49288
    4718881430.064Solid351 x 14300.504117
    4718541220.08Solid351 x 14300.261 x 0.526109
    4718961230.08Solid351 x 14300.544148
    4718631020.101Solid351 x 12300.282 x 0.585146
    4719121030.101Solid351 x 12300.595200
    471870820.1437401 x 10450.382 x 0.775253
    471920830.1437401 x 10450.794344
    481275620.1797501 x 8450.448 x 0.948375
    471938630.1797501 x 8450.954513
    672626430.2267501 x 6601.097755
    672634230.2867501 x 6801.2771085
    All dimensions are nominal and subject to normal manufacturing tolerances
    ◊ Cable marked with this symbol is a standard stock item
    Table 2 – Electrical and Engineering Data
    Cond. SizeConductor NumberMin. Bend RadiusDC Resistance at 25°CAC Resistance at 75°CInductive Reactance @ 60HzAllowable Ampacity Raceway 60°CAllowable Ampacity Raceway 75°CAllowable Ampacity Raceway 90°C
    † 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.

    Revision: 1.000.000

    Updated On: Aug. 18, 2023, 2:39 p.m. UTC