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12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

Best price now

$23.50at AmazonChecked 52 min ago

87% under what the other stores charge

Compared across 14 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $23.50 at Amazon (checked Nov 12, 2026).
  • Checked at 14 stores.

    • Our take on the 12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

    12/2 NM-B is standard residential branch-circuit cable: two current-carrying conductors plus a bare ground, wrapped in a non-metallic sheath. It is rated 600 volts and its conductors are 90°C dry, but the NEC caps its ampacity at the 60°C column, so 12-gauge copper is used on 20-amp circuits. It suits dry indoor work such as outlets, lighting and appliance runs, and it is lead-free and RoHS compliant. Against armored or conduit wiring it is cheaper and faster to run through studs and joists, but it cannot go in wet locations or where exposed to damage, and it is not for outdoor or buried use.

    Best forDry indoor branch circuits20-amp outlet and lighting runsDIY and remodel wiring through wood framingFeeding kitchen and laundry circuits
    Pros
    • Two conductors plus bare ground in one pull
    • 12-gauge copper for 20-amp circuits
    • Meets UL 83, UL 719 and ASTM specs
    • Lead-free and RoHS compliant
    • Flexible sheath pulls easily through framing
    Cons
    • Ampacity limited to the 60°C column
    • Not for wet, damp or outdoor locations
    • Must be protected where exposed to damage
    • Not rated for burial or conduit-only runs

    12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire prices at every store

    • The Home DepotNew

      In stock

      $33.00Free shippingChecked 52 min ago
      Visit The Home Depot
    • IB LightingNew

      In stock

      $165.00Free shippingChecked 52 min ago
      Visit IB Lighting
    • Stones Ace ofNew

      In stock

      $189.99Checked 52 min ago
      Visit Stones Ace of
    • AmazonNew

      Availability unknown

      As an Amazon Associate, Deal.ai earns from qualifying purchases.

      $23.50Checked 52 min ago
      Visit Amazon
    • Gordon Electric SupplyNew

      Availability unknown

      $160.00Checked 52 min ago
      Visit Gordon Electric Supply
    • garoppos.comNew

      Availability unknown

      $179.99Checked 52 min ago
      Visit garoppos.com
    • Fleet FarmNew

      Availability unknown

      $179.99Checked 52 min ago
      Visit Fleet Farm
    • Lowe'sNew

      Availability unknown

      $182.00Free shippingChecked 52 min ago
      Visit Lowe's
    • SupplyHouse.comNew

      Availability unknown

      $183.49Checked 52 min ago
      Visit SupplyHouse.com
    • Do it BestNew

      Availability unknown

      $184.99Checked 52 min ago
      Visit Do it Best
    • ZoroNew

      Availability unknown

      $208.99Checked 52 min ago
      Visit Zoro
    • Country True ValueNew

      Availability unknown

      $209.99Checked 52 min ago
      Visit Country True Value
    • MSC Industrial SupplyNew

      Availability unknown

      $232.13Checked 52 min ago
      Visit MSC Industrial Supply
    • Global IndustrialNew

      Availability unknown

      $265.95Checked 52 min ago
      Visit Global Industrial

    Store links may earn us a commission.

    12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire price history

    Lowest price we've seen: $23.50 on Nov 12 at Amazon. Tracked across 14 stores since Nov 12.

    About the 12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

    This 12/2 NM-B non-metallic sheathed cable is used in normally dry residential installations. It serves as branch-circuit wiring for outlets, lighting and other residential loads, as outlined in NEC 2008 and NEC 2011 Article 334. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness.

    Each conductor is insulated with color-coded PVC and covered in nylon, meeting the required thickness of Type THHN. A 30 mil color-coded PVC sheath is applied over the completed assembly. The cable is lead free and RoHS compliant.

    NM-B is rated at 600 volts. Conductor and sheath are rated for 90°C dry, but ampacity is limited to 60°C under NEC 2008 and NEC 2011.

    Wire size
    12 AWG
    Conductors
    2
    Ground wire
    10 AWG
    Voltage rating
    600 volts
    Ampacity
    20 Amps
    Temperature rating
    90°C conductor insulation and sheath (dry); ampacity limited to 60°C
    Insulation
    Color-coded PVC with nylon covering
    PVC thickness
    0.76 mm / 0.029 inches
    Nylon thickness
    0.13 mm / 0.005 inches
    Sheath
    30 mil color-coded PVC
    Cable dimensions
    Nominal 14.2 mm x 0.55 inches
    Weight
    0.082 lbs per foot
    Standards
    ASTM specifications, UL 83, UL 719, Federal Specification A-A-59544, NEC requirements
    Compliance
    Lead free, RoHS compliant
    Use
    Residential indoor, normally dry locations

    Questions and answers

    What circuits is 12/2 NM-B used for?
    It is for dry indoor branch circuits at 20 amps: general outlets, lighting, kitchen counter receptacles and similar residential loads. The NEC limits its ampacity to the 60°C rating even though the conductors are 90°C dry.
    Can 12/2 NM-B be used outdoors or underground?
    No. It is for normally dry installations and may be fished through masonry or tile walls only where it is not exposed or subject to excessive moisture. Use a wet-location or direct-burial cable for outdoor and buried runs.
    What is the difference between 12/2 and 14/2 NM-B?
    12/2 has 12-gauge copper and is used on 20-amp circuits; 14/2 has 14-gauge copper for 15-amp circuits. Choose 12/2 where the circuit needs 20 amps, such as kitchen and laundry circuits.
    Does 12/2 NM-B include a ground wire?
    Yes. It has two insulated conductors plus a bare equipment ground, all under one non-metallic sheath. The ground counts toward the circuit but not as a current-carrying conductor.
    Is this cable lead-free and code compliant?
    Yes. It is lead-free and RoHS compliant, and it meets UL 83, UL 719, ASTM specifications and Federal Specification A-A-59544, with applications covered by NEC Article 334.
    Where is the 12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire cheapest?
    At Amazon, for $23.50, 87% under what the other stores charge, as of our latest check.
    Where can I buy the 12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire?
    14 stores we checked sell it, including The Home Depot, Amazon, Gordon Electric Supply, IB Lighting, garoppos.com.

    Stores we've priced the 12/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire at

    • Ace Hardware deals and prices
    • Fleet Farm deals and prices
    • Home Depot deals and prices
    • Lowe's deals and prices
    • MSC Industrial Supply deals and prices
  • Zoro deals and prices

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