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Deal.ai › Southwire
Southwire
250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire
Southwire

250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire

Best price now

$46.95at AmazonChecked Nov 12

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Price facts

  • Last seen at $46.95 at Amazon on Nov 12.

    • Our take on the 250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire

    This is a 250 ft coil of Southwire 12/3 NM-B nonmetallic-sheathed cable with a bare ground, for 20-amp branch circuits in dry interior locations. The three insulated conductors are annealed copper, and the SIMpull jacket with its SlikQuik membrane is built to cut pulling force roughly in half versus standard NM-B. It suits anyone wiring outlets, switches or dedicated 20-amp circuits through studs, joists and masonry air voids. Against generic NM-B, the pulling-friendly jacket and the third conductor for multi-wire or 240-volt circuits are the main draws; it is not for wet locations, outdoors, or conduit fill where code requires THHN.

    Best for20-amp kitchen, laundry and garage branch circuitsWiring a circuit that needs a neutral plus a traveler or second hotDIY and pro rough-in through studs and joistsPulls through long or tight runs
    Pros
    • 12-gauge copper handles 20-amp circuits
    • Three conductors plus ground cover multi-wire and 240-volt runs
    • SIMpull jacket with SlikQuik membrane reduces pulling effort
    • Rated 600 volts; usable exposed or concealed in dry locations
    • Annealed soft copper bends and strips easily
    Cons
    • Not for wet or damp locations
    • Ampacity limited to the 60°C column despite the 90°C insulation rating
    • Stiff 12-gauge is harder to route than 14-gauge
    • Bulk coil is heavy and awkward to handle alone
    • No ground fault or arc fault protection built in; that is the breaker's job

    250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire prices at every store

    • AmazonNew

      Availability unknown

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

      $46.95Free shippingChecked Nov 12
      Visit Amazon

    Also available at

    • Sonic ElectricCheck price at Sonic Electric

    Store links may earn us a commission.

    250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire price history

    Lowest price we've seen: $46.95 on Nov 12 at Amazon. Tracked across 1 store since Nov 12.

    What reviewers say

    Electricians and DIYers who use SIMpull NM-B generally report that it pulls noticeably easier than older jacket designs, especially on long runs. Complaints center on the stiffness of 12-gauge and on the coil's weight and memory when working alone.

    What people mention
    • Pulling easePraisedUsers say the SIMpull jacket feeds through studs and bends with less drag than standard NM-B.
    • StiffnessCriticisedThe 12-gauge conductors resist tight bends and are harder to route than 14-gauge.
    • Coil handlingMixedThe 250 ft coil is heavy and holds its shape, which helps on long pulls but complicates short ones.
    • Conductor qualityPraisedAnnealed copper strips cleanly and twists well at splices.

    About the 250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire

    This is 250 feet of Southwire Romex SIMpull 12/3 NM-B cable with ground. It is nonmetallic-sheathed cable with solid annealed (soft) copper conductors that are UL Listed.

    NM-B cable is mainly used in residential wiring as branch circuits for outlets, switches and other loads. It can be used for exposed and concealed work in normally dry locations. It may also be run in air voids of masonry block or tile walls that are not subject to excessive moisture or dampness.

    The jacket has a SlikQuik infused membrane. This reduces pulling force by 50%, which makes installation easier.

    Length
    250 ft.
    Gauge
    12 AWG, 3 conductors with ground (12/3 W/G)
    Conductor
    Solid annealed (soft) copper, UL Listed
    Cable type
    NM-B (nonmetallic-sheathed cable)
    Voltage rating
    600 volts
    Temperature
    Up to 90°C, with ampacity limited to that of 60°C conductors
    Location
    Normally dry locations, exposed or concealed work
    Jacket
    SlikQuik infused membrane, 50% reduction in pulling force
    Brand
    Southwire

    Questions and answers

    Can this be used outdoors or in a garage?
    No. NM-B is for dry, interior locations. Use UF cable for underground or damp spots and wet-rated conduit outdoors.
    What size breaker does 12/3 NM-B take?
    A 20-amp breaker on 120-volt circuits. Ampacity is limited to the 60°C column, so do not upsize the breaker because the insulation is rated 90°C.
    Why choose 12/3 over 12/2?
    The extra conductor gives you a neutral plus a second hot or traveler, which you need for multi-wire circuits, 240-volt loads without a separate neutral run, or three-way switching.
    Can it go inside conduit?
    It can be run in short conduit sleeves for protection, but it is not meant to be pulled through long conduit runs; use individual THHN conductors there.
    What is in the box?
    One 250 ft coil of 12/3 NM-B cable with a bare copper ground. Boxes and staples are not included.
    Is it UL listed?
    Yes, the copper conductors and cable are UL listed for NM-B use.
    Where is the 250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire cheapest?
    At Amazon, for $46.95, as of our latest check.
    Where can I buy the 250 ft. 12/3 Solid Romex SIMpull CU NM-B W/G Wire?
    2 stores we checked sell it, including Amazon, Sonic Electric.

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