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SPEC 44066

Southwire® Machine Flex® Power PVC THHN

90°C Wet or Dry. 600 Volts. Flexible Stranded Copper Conductor. PVC Insulation and Nylon Jacket (THHN/THWN-2). Oil & Gasoline Resistant. Sunlight Resistant. Rated UL VW-1 and CSA FT1 & FT4 Flame Resistant.

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Construction:

  1. Conductor: 8 - 4/0 AWG: Class K, flexible stranded bare copper. 250 - 750 kcmil: Class I, flexible stranded bare copper
  2. Insulation: Polyvinyl Chloride (PVC) with Nylon sheath

Applications and Features:

Southwire’s Machine Flex® power cables are suited for use in wet and dry areas, conduits, ducts, troughs, trays, aerial supported by a messenger, and where superior electrical properties are desired. These cables are capable of operating continuously at the conductor temperature not in excess of 90°C for normal operation in wet and dry locations, 130°C for emergency overload, and 150°C for short circuit conditions. 1/0 AWG & larger rated for CT use.

Specifications:

  • ASTM B3 Soft or Annealed Copper Wire
  • ASTM B172 Standard Specification for Rope-Lay-Stranded Copper Conductors Having Bunch-Stranded Copper Conductors
  • ASTM B174 Standard Specification for Bunch-Stranded Copper
  • UL 83 Thermoplastic Insulated Wires and Cables
  • UL 758 Standard for Appliance Wiring Material Style 2463 (80C, 600V)
  • UL 1063 Machine Tool Wiring (MTW)
  • UL 1685 FT4 Vertical-Tray Fire Propagation and Smoke Release Test (1/0 and Larger)
  • ICEA S-95-658 (NEMA WC70) Power Cables Rated 2000 Volts or Less for the Distribution of Electrical Energy
  • CE/RoHS-2 – The CE Marking has been applied solely to express the conformance to the material restrictions identified in the RoHS-2 (2011/65/EU) Directive
  • Made in America: Compliant with both Buy American and Buy America Act (BAA) requirements per 49 U.S.C. § 5323(j) and the Federal Transit Administration Buy America requirements per 49 C.F.R. part 661

    • Sample Print Legend:

    8AWG-1AWG
    SOUTHWIRE #P# (UL) 1 AWG (42.406 mm2) CU TYPE THHN/THWN-2 600V 90(D)C DRY/90(D)C WET PRI/GRI VW-1 OR AWM [Applicable Styles] OR MTW SUN RES --- (CSA) T90 NYLON OR TWN75 FT1 FT4 --- CE RoHS-2 Made in USA. [SEQUENTIAL FOOTAGE MARKS]

    1/0 AWG - 500 KCMIL
    SOUTHWIRE #P# (UL) 500 KCMIL (253.35mm2) CU TYPE THHN/THWN-2 600V 90(D)C DRY/90(D)C WET PRI/GRI VW-1 FOR CT USE OR AWM [Applicable Styles] OR MTW SUN RES --- (CSA) T90 NYLON OR TWN75 FT1 FT4 --- CE RoHS-2 Made in USA. [SEQUENTIAL FOOTAGE MARKS]

    600 - 1000 KCMIL
    {SQFTG} SOUTHWIRE #P# (UL) XX KCMIL XX STRAND CLASS I (XXMM2) CU TYPE THHN/THWN-2 600V 90ºC DRY/90ºC WET PRI/GRI VW-1 FOR CT USE SUN RES OR AWM 1321 OR MTW --- (CSA) T90 NYLON OR TWN75 FT1 FT4 --- (NOM)-ANCE THWN/THHN 600V 90ºC --- CE RoHS-2 MADE IN USA

    Table 1 – Weights and Measurements
    Stock NumberCond. SizeStrand CountDiameter Over ConductorInsul. ThicknessInsulation ColorApprox. ODCopper WeightApprox. Weight
    AWG/KcmilNo. of Strandsinchmilinchlb/1000ftlb/1000ft
    TBA81680.15335BK0.2235262
    TBA62730.19035BK0.2648398
    67286744130.23550BK0.335130153
    TBA35250.27050BK0.366169197
    TBA26650.30250BK0.402210243
    TBA18360.32960BK0.449260302
    6773681/010440.40060BK0.520334374
    1390162/013300.43060RD0.520381426
    4571203/016720.49060BK0.608535599
    6796074/021090.55060BK0.664676746
    6494142506270.60570BK0.747763857
    6728663007410.63870BK0.7809291024
    6494153508930.67060BK0.81210841172
    64894850012210.85870BK0.99815141641
    64941660014800.96370BK1.12718592033
    649549◊75018501.09480BK1.25823672569
    674459100025161.19080BK1.35030453255
    All dimensions are nominal and subject to normal manufacturing tolerances
    ◊ Cable marked with this symbol is a standard stock item
    TBA stock codes are estimations only and actual product may vary. Please wait until a stock code is assigned to purchase connectors and/or fittings.
    Table 2 – Electrical and Engineering Data
    Stock NumberCond. SizeMin Bending RadiusMax Pull TensionDC Resistance @ 25°CAC Resistance @ 75°CInductive Reactance @ 60HzAllowable Ampacity At 75°CAllowable Ampacity At 90°C
    AWG/KcmilinchlbΩ/1000ftΩ/1000ftΩ/1000ftAmpAmp
    TBA80.81320.7150.8610.0525055
    TBA61.02090.4500.5410.0516575
    67286741.33330.2820.3400.0488595
    TBA31.64200.2260.2720.047100115
    TBA21.65300.1790.2160.045115130
    TBA11.66690.1370.1640.046130145
    6773681/02.08440.1130.1360.044150170
    1390162/02.010640.0900.1080.043175195
    4571203/02.413420.0720.0870.042200225
    6796074/02.616920.0570.0690.041230260
    6494142502.920000.0470.0570.041255290
    6728663003.124000.0390.0480.041285320
    6494153503.228000.0330.0420.040310350
    6489485003.940000.0230.0310.039380430
    6494166005.648000.0190.0270.039420475
    649549◊7506.260000.0160.0240.038475535
    67445910006.780000.0120.0200.037545615
    † 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.

    Stock Codes and Colors

    Size (Strand)BlackRedBrownOrangeYellowGrayGreenPinkPurpleTanGray/PurpleGreen/Yellow
    4 (413)672867674667
    3 (525)664229
    2 (665)
    1 (836)456258
    1/0 (1044)674668677368
    2/0 (1330)456257
    3/0 (1672)457120457121664217664220664223664226
    4/0 (2109)679607456253456254456255456256679606
    250 (627)649414672218672217672219673792673791677370
    300 (741)672866674116674117674118674120674121
    350 (893)649415138181674662674664674665674666652964672017
    500 (1221)648948646978646979646980646981677701456461456462456463456464646982
    600 (1480)649416678431678432678434678435673748678436
    750 (1850)649549139016677721677722677723677725671518677726
    1000 (2516)674459

    Revision: 1.000.021

    Updated On: June 23, 2025, 5:12 p.m. UTC