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6
6/2 NM-B Wire w/ Ground

6/2 NM-B Wire w/ Ground

Best price now

$2.95at Testing Developer StoreChecked Nov 9

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Price facts

  • Last seen at $2.95 at Testing Developer Store on Nov 9.
  • Our take on the 6/2 NM-B Wire w/ Ground

    This is 6-gauge, two-conductor non-metallic sheathed cable with a bare ground, the heavy-duty end of the Romex-style NM-B line. The copper conductors are insulated with PVC plus a nylon jacket rated 90°C dry, and the whole assembly is rated 600 volts, though code limits ampacity to the 60°C column. It suits dry, indoor residential runs for high-draw circuits such as ranges, subpanels and large appliances. Against 12/2 and 10/2 NM-B, it carries far more current but is stiffer and harder to bend, so it is reserved for the circuits that need it.

    Best forRange, dryer and subpanel feedersResidential branch circuits for large appliancesDry indoor runs through studs and joistsDIYers wiring a single high-amp circuit
    Pros
    • Two 6 AWG copper conductors plus a bare ground
    • 600-volt rating with 90°C insulation
    • Sheath and conductors are lead-free and RoHS compliant
    • Meets UL 83, UL 719 and ASTM specs
    • Sold by the foot from 25 to 1000 ft, so you buy only what the run needs
    Cons
    • Ampacity is capped at the 60°C column under the NEC, below the 90°C insulation rating
    • Stiff 6-gauge copper is hard to pull through tight bends
    • Not for wet, damp or exposed outdoor locations
    • No ground fault or arc fault protection built in; that comes from the breaker

    6/2 NM-B Wire w/ Ground prices at every store

    • Testing Developer StoreNew

      In stock

      $2.95Checked Nov 9
      Visit Testing Developer Store

    Also available at

    • Global Cable and WireCheck price at Global Cable and Wire

    About the 6/2 NM-B Wire w/ Ground

    This is 6/2 Type NM-B non-metallic sheathed cable with ground, equivalent to Romex NM-B. It is used in normally dry residential installations as branch-circuit wiring for outlets, lighting and other residential loads. Its applications are outlined in NEC 2008 and NEC 2011 Article 334.

    The conductors are stranded annealed soft bare copper. Each is insulated with color-coded PVC and a nylon covering that meets the thickness required for Type THHN. A 30 mil color-coded PVC sheath, rated 90°C, covers the completed assembly. The ground is soft bare copper.

    The cable is rated at 600 volts. Its conductor temperature rating is 90°C dry, but its ampacity is limited to 60°C under NEC 2008 and NEC 2011. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness. It is lead free and RoHS compliant.

    Type
    NM-B non-metallic sheathed cable with ground
    Wire size
    6 AWG
    Conductors
    2 + 1 ground
    Ground wire
    10 AWG, soft bare copper
    Conductor material
    Stranded annealed soft bare copper per ASTM B3 and B8
    Insulation
    Color-coded PVC with nylon covering, rated 90°C
    PVC thickness
    0.76 mm / 0.029 in
    Nylon thickness
    0.13 mm / 0.005 in
    Sheath
    30 mil color-coded PVC, rated 90°C
    Dimensions
    Nominal 8.1 x 17.3 mm / 0.31 x 0.68 in
    Weight
    0.255 lbs per foot
    Ampacity
    55 Amps
    Voltage rating
    600 volts
    Temperature rating
    90°C dry conductor rating; ampacity limited to 60°C per NEC
    Standards
    UL 83, UL 719, Federal Specification A-A-59544, NEC requirements; meets or exceeds applicable ASTM specifications
    Compliance
    Lead free, RoHS compliant
    Length
    Minimum 25 ft to maximum 1000 ft

    Questions and answers

    What is 6/2 NM-B wire used for?
    It feeds high-amp 240-volt residential circuits: ranges, dryers, subpanels and large appliances. It is for normally dry, indoor installations such as branch circuits in walls, ceilings and floors.
    How much current can 6/2 NM-B carry?
    The conductors are insulated to 90°C, but the NEC limits NM-B ampacity to the 60°C column. In practice that means 6 AWG copper is used for circuits up to 55 amps, which covers most range and subpanel feeds.
    Does it include a ground wire?
    Yes. The cable has two insulated current-carrying conductors plus a bare copper ground, so it wires a 240-volt circuit with equipment grounding in one jacket.
    Can 6/2 NM-B be used outdoors or underground?
    No. NM-B is rated for dry locations only and is not for wet or damp spots, buried runs or exposed exterior work. Those need UF cable, conduit or another wiring method.
    How is it different from 6/3 NM-B?
    6/2 has two insulated conductors plus ground; 6/3 adds a third insulated conductor. Use 6/3 where a circuit needs a neutral, such as a range with 120-volt controls or a subpanel feed.
    What lengths are available?
    It is cut to order from 25 ft up to 1000 ft. Longer put-ups require a special order, so measure the run and add slack before ordering.
    Where is the 6/2 NM-B Wire w/ Ground cheapest?
    At Testing Developer Store, for $2.95, as of our latest check.
    Where can I buy the 6/2 NM-B Wire w/ Ground?
    2 stores we checked sell it, including Testing Developer Store, Global Cable and Wire.

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