StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai
1
12/3 NM-B Wire w/ Ground Yellow or Purple

12/3 NM-B Wire w/ Ground Yellow or Purple

Best price now

$1.31at Global Cable and WireChecked Nov 9

Prices are checked against each store and labelled with when.

Visit Global Cable and Wire

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $1.31 at Global Cable and Wire on Nov 9.
  • Our take on the 12/3 NM-B Wire w/ Ground Yellow or Purple

    This is 12-gauge, three-conductor non-metallic sheathed cable with a bare ground, the standard branch-circuit wire for 20-amp residential circuits. Solid copper conductors, PVC insulation with a nylon jacket rated 90°C, and a 30 mil PVC outer sheath rated 600 volts. It meets UL 83, UL 719 and ASTM specs and is lead-free and RoHS compliant. Its ampacity is limited to the 60°C column per the NEC, so it is not a substitute for higher-temperature or wet-location wiring.

    Best for20-amp kitchen, bath and laundry branch circuitsResidential outlet and lighting runs in dry wallsDIYers wiring a remodel to codeElectricians stocking standard Romex-type cable
    Pros
    • Solid copper conductors hold shape and terminate cleanly
    • Color-coded insulation speeds up identification
    • Rated 600 volts and 90°C conductor insulation
    • Meets UL 83, UL 719 and ASTM specs
    • Lead-free and RoHS compliant
    Cons
    • Ampacity capped at the 60°C column, not the 90°C rating
    • Not for wet or damp locations
    • Solid 12-gauge is stiff and hard to pull through tight bends
    • Three-conductor plus ground is bulkier than 12/2 in boxes

    12/3 NM-B Wire w/ Ground Yellow or Purple prices at every store

    • Global Cable and WireNew

      In stockReturn policy

      $1.31Checked Nov 9
      Visit Global Cable and Wire

    About the 12/3 NM-B Wire w/ Ground Yellow or Purple

    This is 12/3 Type NM-B non-metallic sheathed cable with ground, 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 cable has three solid annealed bare copper conductors plus a bare copper ground. The conductors have color-coded PVC insulation with a nylon covering that meets Type THHN thickness. A 30 mil color-coded PVC sheath rated 90°C covers the assembly.

    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 is lead free and RoHS compliant.

    Type
    NM-B non-metallic sheathed cable with ground (also known as Romex®)
    Wire size
    12 AWG
    Conductors
    3 + 1 ground
    Ground wire
    12 AWG bare copper, solid per ASTM B3 and stranded per ASTM B3 and B8
    Conductor material
    Solid annealed soft bare copper per ASTM B3
    Insulation
    Color-coded PVC with nylon covering, rated 90°C
    PVC thickness
    0.380 mm / 0.015 in
    Nylon thickness
    0.100 mm / 0.004 in
    Sheath
    30 mil color-coded PVC, rated 90°C
    Cable diameter
    8.6 mm / 0.37 in (nominal)
    Weight
    0.107 lbs per foot
    Ampacity
    20 Amps
    Voltage rating
    600 volts
    Standards
    UL 83, UL 719, Federal Specification A-A-59544, NEC, applicable ASTM specifications
    Compliance
    Lead free, RoHS compliant
    Use
    Normally dry residential installations

    Questions and answers

    What is 12/3 NM-B wire used for?
    It is used for 20-amp branch circuits in dry residential locations: outlets, lighting and other loads. The third conductor supports switched legs or multiwire circuits. It is not rated for wet or damp areas.
    Can I use it outdoors or underground?
    No. NM-B is for normally dry installations. It may be fished through masonry or tile walls where not exposed to excessive moisture. Use UF cable for direct burial or wet locations.
    What does the 60°C ampacity limit mean?
    The conductors are insulated to 90°C, but the NEC limits 12-gauge NM-B ampacity to the 60°C column, which is 20 amps. Size breakers and loads to that, not to the higher insulation rating.
    Does it include a ground wire?
    Yes. It has a bare copper ground conductor along with the three insulated conductors. The ground is solid in smaller sizes and stranded in larger ones.
    Is it the same as Romex?
    Romex is a brand name commonly used for NM-B cable. This is the same type of product: 12 AWG, three conductors plus ground, 600-volt rated.
    What is the difference between 12/2 and 12/3?
    12/2 has two insulated conductors plus ground; 12/3 has three plus ground. Choose 12/3 when you need a switched leg, a traveler or a multiwire circuit.
    Where is the 12/3 NM-B Wire w/ Ground Yellow or Purple cheapest?
    At Global Cable and Wire, for $1.31, as of our latest check.

    More electrical wire

    • V
      Vevor NM-B Cable 12 AWG/2C Copper Indoor Electrical Wire 100'
      Vevor NM-B Cable 12 AWG/2C Copper Indoor Electrical Wire 100'
    • 1
      12 AWG 2C NM-B-PCS DUO Control/Signal Copper Conductors 600V Yellow
      12 AWG 2C NM-B-PCS DUO Control/Signal Copper Conductors 600V Yellow
    • 1
      10/2 NM-B, Non-Mettallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and Other Loads with Dry Applications (65Ft Cut)
      10/2 NM-B, Non-Mettallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and Other Loads with Dry Applications (65Ft Cut)
    • S
      Solid Indoor 10/2 W/G NMB Cable Non-Mettallic Residential Indoor Wire 100 ft
      Solid Indoor 10/2 W/G NMB Cable Non-Mettallic Residential Indoor Wire 100 ft
    C
    Copperweld 10/2 NM-B Copper-Clad Aluminum Building Wire with Ground, 250 ft, Yellow
    Copperweld 10/2 NM-B Copper-Clad Aluminum Building Wire with Ground, 250 ft, Yellow
  • 1
    10 AWG 2 Conductor NM-B Electrical Wire with Ground 50 ft PVC Sheathed Copper Cable for Indoor Wiring Outlets Switches and Lighting
    10 AWG 2 Conductor NM-B Electrical Wire with Ground 50 ft PVC Sheathed Copper Cable for Indoor Wiring Outlets Switches and Lighting
  • S
    Southwire Romex 10/2 NM-B Wire - Copper, Insulated, UL Listed - 100 Ft, White
    Southwire Romex 10/2 NM-B Wire - Copper, Insulated, UL Listed - 100 Ft, White
  • S
    Solid Indoor 10/2 W/G NMB Cable Non-Metallic Residential Indoor Wire 50 ft Coil
    Solid Indoor 10/2 W/G NMB Cable Non-Metallic Residential Indoor Wire 50 ft Coil