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Deal.ai › Southwire › Electrical Cables
Southwire
Southwire 63947655 Nonmetallic With Ground Sheathed Cable

Southwire 63947655 Nonmetallic With Ground Sheathed Cable

Best price now

$168.03at Lowe'sChecked Nov 10

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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Price facts

  • Last seen at $168.03 at Lowe's on Nov 10.
  • Checked at 2 stores.

Our take on the Southwire 63947655 Nonmetallic With Ground Sheathed Cable

This is 250 feet of Southwire Romex SIMpull 12/3 NM-B cable: three 12 AWG solid copper conductors plus a bare ground, rated 600V and 90°C, with 20-amp allowable ampacity. It is the standard yellow-jacketed wiring for 20-amp branch circuits in homes, and the SIMpull jacket is made to slide through studs and conduit with less pulling effort. The 12/3 format carries two hot legs plus neutral, so it suits multiwire circuits and 240V runs that need a neutral, such as some dryers and shop equipment. Against cheaper 12/2, it costs more and is bulkier, but it covers circuits where a neutral must travel with both hots. Electricians rate it for consistent jacket quality and easy stripping; the main complaints are stiffness in cold weather and the premium over 12/2.

Best for20-amp kitchen and laundry branch circuitsMultiwire circuits sharing a neutral240V runs that need a neutralDIYers wiring a shop or addition
Pros
  • SIMpull jacket pulls more easily through framing
  • Solid copper conductors strip cleanly
  • 12 AWG supports 20-amp circuits
  • 3 conductors plus ground covers multiwire and 240V/120V needs
  • Color-coded yellow jacket is easy to identify
Cons
  • Stiffer and harder to bend than 14/2
  • Costs more than 12/2 where no neutral is needed
  • Heavy 250 ft coil to handle alone
  • Not for wet, buried or exposed outdoor use without protection

Southwire 63947655 Nonmetallic With Ground Sheathed Cable prices at every store

  • Lowe'sNew

    In stock

    $168.03Free shippingChecked Nov 10
    Visit Lowe's
  • WalmartNew

    In stockSold by MSC Industrial SupplyReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $292.38Free shippingChecked Nov 10
    Visit Walmart

Store links may earn us a commission. Some prices via Klarna.

Southwire 63947655 Nonmetallic With Ground Sheathed Cable price history

Lowest price we've seen: $168.03 on Nov 10 at Lowe's. Tracked across 1 store since Nov 10.

What reviewers say

Electricians and DIYers generally rate Romex SIMpull highly for smooth pulling and clean stripping. Complaints center on stiffness in cold weather and the price gap versus 12/2.

What people mention
  • Pull easePraisedOwners say the SIMpull jacket feeds through studs and conduit with noticeably less friction.
  • StrippingPraisedReviewers report the solid copper strips cleanly and the jacket cuts back without tearing.
  • StiffnessCriticisedUsers find it hard to bend in cold weather and awkward in tight boxes.
  • ValueMixedSome say the 12/3 premium is worth it for multiwire circuits; others call it overkill versus 12/2.
  • Coil handlingMixedThe 250 ft coil is heavy and can kink if unrolled without care.

About the Southwire 63947655 Nonmetallic With Ground Sheathed Cable

Southwire Company Romex Simpull 12/3Nm-Wgx250 12/3Nm-Wgx250Ft Building Wire

Specifications

Color
YellowSource
Conductor Size
12 AWGSource
Number of Conductors
3C with GroundSource
Conductor Material
CopperSource

Questions and answers

When should I use 12/3 instead of 12/2?
Use 12/3 when a circuit needs two hots plus a neutral, such as a multiwire branch circuit or a 240V appliance that also needs 120V. For a plain 20-amp circuit with one hot, 12/2 is enough.
Can this be used outdoors or underground?
No. NM-B is for dry, protected indoor locations. Use UF cable for direct burial and wet locations.
What size box and breaker does it need?
It works on a 20-amp breaker. The three conductors plus ground fill boxes faster than 12/2, so check box fill before packing a small box.
Is the ground wire counted as a conductor?
The bare ground is separate from the three insulated conductors. The 12/3 label refers to the insulated hots and neutral.
Can I run it through conduit?
It can go in short conduit sleeves for protection, but NM-B is not designed for long conduit runs. Use individual THHN conductors for that.
Where is the Southwire 63947655 Nonmetallic With Ground Sheathed Cable cheapest?
At Lowe's, for $168.03, as of our latest check.
Where can I buy the Southwire 63947655 Nonmetallic With Ground Sheathed Cable?
2 stores we checked sell it, including Lowe's, Walmart.

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Stores we've priced the Southwire 63947655 Nonmetallic With Ground Sheathed Cable at

  • Lowe's deals and prices

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Length
250 ftSource
Voltage Rating
600V ACSource
Jacket Material
NylonSource
Insulation Material
PVCSource
Conductor Design
SolidSource
Temp. Rating
90°CSource
Trade Designation
NM-BSource
Allowable Ampacity
20Source
Nom. Width
524milsSource
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