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Wirenco 8/2 NM-B Cable vs Southwire 8/2 NM-B Cable

Both are 8/2 NM-B copper cable rated 40 A at 600 V, so the electrical performance is the same. The real split is length and brand: Wirenco sells a short 30 ft cut for one small run, while Southwire sells a 125 ft coil for a full circuit or several. Southwire is the better-known name in residential wiring and its cable is widely used by electricians; Wirenco is a smaller brand but meets the same UL and ASTM standards. Buy Southwire unless you need only a short length.

  • Choose the Wirenco if you have one short run, such as a single dryer, range or subpanel feed, and do not want a large coil left over.
  • Choose the Southwire if you are wiring a full circuit or several runs and want a recognized brand in a long coil.

Prices

  • Wirenco 8/2 NM-B Cable: $73.93 at Walmart (checked today)
  • Southwire 8/2 NM-B Cable: $34.99 at Amazon (checked today)
  • Difference: the Southwire 8/2 NM-B Cable is $38.94 cheaper than the Wirenco 8/2 NM-B Cable today
Wirenco
Wirenco 8/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and other Loads with Dry Applications (30Ft Cut)

Wirenco 8/2 NM-B Cable

Wirenco 8/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and other Loads with Dry Applications (30Ft Cut)

$73.93at WalmartChecked 14 h ago
See all prices and details
Visit Walmart
Pros
  • Short length suits one small run with little waste
  • Meets UL 83, UL 719 and ASTM specs
  • Lead free and RoHS compliant
  • 10 AWG ground included
Cons
  • Only 30 ft, too short for most full circuits
  • Less familiar brand to inspectors and electricians
  • Single cut, no coil or reel option
Southwire
Southwire 8/2 NM-B with Ground Non-Metallic Sheathed Cable

Southwire 8/2 NM-B Cable

Southwire 8/2 NM-B with Ground Non-Metallic Sheathed Cable

$34.99at AmazonChecked 14 h ago
See all prices and details
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As an Amazon Associate, Deal.ai earns from qualifying purchases.

Pros
  • 125 ft covers a full circuit or several runs
  • Southwire is widely recognized and stocked
  • Coil, reel and spool packaging options
  • Same 8 AWG copper, 40 A, 600 V ratings
Cons
  • Large coil is excess for one short run
  • Heavier and bulkier to store and handle

What separates them

Wirenco 8/2 NM-B CableSouthwire 8/2 NM-B Cable
Length30 ft cut125 ft coil
Brand recognitionSmaller brand, less common in trade useSouthwire is a standard name among electricians
Conductor and ampacity8 AWG copper, 40 A, 600 V8 AWG copper, 40 A, 600 V
Ground wire10 AWG ground includedGround wire included
Temperature rating90°C conductor, ampacity limited to 60°C per NEC90°C max rating
PackagingSingle cut lengthCoil, reel or spool options
Leftover waste on a short runLittle to noneLarge coil leaves excess on a single short run

Price history

  • Wirenco 8/2 NM-B Cable: lowest $73.93 on Nov 10 at Amazon.
  • Southwire 8/2 NM-B Cable: lowest $34.99 on Nov 10 at Amazon.

Prices at every store

Wirenco 8/2 NM-B Cable

  • WalmartNew

    In stockSold by Shoppers LightingReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $73.93Free shippingChecked 14 h ago
    Visit Walmart
  • AmazonNew

    Availability unknown

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

    $73.93Free shippingChecked 14 h ago
    Visit Amazon
All 2 stores and price history →

Southwire 8/2 NM-B Cable

  • The Home DepotNew

    In stock

    $103.00Free shippingChecked 14 h ago
    Visit The Home Depot
  • RSNew

    In stockSold by America

    $188.94+ $82.00 shippingChecked 14 h ago
    Visit RS
  • HD SupplyNew

    In stock

    $287.00Free shippingChecked 14 h ago
    Visit HD Supply
  • AmazonNew

    Availability unknown

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

    $34.99Checked 14 h ago
    Visit Amazon
All 13 stores and price history →

Specs compared

SpecWirenco 8/2 NM-B CableSouthwire 8/2 NM-B Cable
colorBlackBlack
cable_length30 ft—
Conductor Material—Copper
Ampacity—40 A
Voltage Rating—600 volts
Conductor Size—8 AWG
Type—NM-B (nonmetallic-sheathed)
Wire Configuration—Nonmetallic with Ground Sheathed Cable
Insulation Material—PVC
Number Of Conductors—2
Material—Copper
Length—125 ft
Show all 24 specsShow fewer specs
SpecWirenco 8/2 NM-B CableSouthwire 8/2 NM-B Cable
Wire Gauge—8 AWG
Diameter—0.141 inch (0.36 cm) (Over Conductor)
Outer Diameter—0.628 x 0.278 inch (1.60 x 0.71 cm)
Thickness—30 mils (0.76 mm) (Jacket)
Application—Residential wiring of branch circuits, Commerci…
Weather Resistance—Moisture Resistant
Quantity—125 ft
Packaging Type—Coil, REEL, SPOOL
Max Temperature Rating—90°C

What reviewers say

Southwire 8/2 NM-B Cable

Electricians and DIYers rate this cable as dependable, easy to strip and pull, and true to its 40 A rating. Complaints center on stiffness in tight spaces and on the lack of a neutral for some appliances.

What people mention
  • FlexibilityMixedOwners say it pulls through framing well but is stiff to bend inside tight boxes.
  • JacketPraisedThe PVC jacket strips cleanly and the printed markings are easy to read.
  • AmpacityPraisedBuyers report it handles 40 A range and subpanel circuits as rated.
  • NeutralCriticisedSome buyers were caught out because 8/2 has no neutral for certain appliances.

Questions and answers

Which is better for a single appliance run?
Wirenco's 30 ft cut is enough for one short run and leaves little waste. If the run is longer than 30 ft, go with Southwire.
Are they electrically the same?
Yes. Both are 8 AWG copper, two conductors plus ground, rated 40 A at 600 V with 90°C insulation. The difference is length and brand, not performance.
Which lasts longer?
Both use PVC jacket and nylon-covered THHN-style insulation, so service life depends on installation, not brand. Keep either in dry, protected locations as NM-B requires.
Is it worth stepping up to Southwire?
Yes for a full circuit or several runs, because the 125 ft coil covers more and the brand is widely accepted. For one short run, the Wirenco cut is the simpler choice.
Can either be used outdoors or in wet spots?
No. NM-B is for normally dry indoor locations. Southwire lists moisture resistance, but neither belongs in wet or exposed outdoor use.

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More comparisons

  • Wirenco 8/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and other Loads with Dry Applications (30Ft Cut) vs YDDECW 8/2 NM-B Wire with Ground 100FT 8 Gauge Non-Metallic Sheathed Cable Pure Copper 8 AWG 2 Conductor Residential Indoor Wire
  • Southwire 8/2 NM-B with Ground Non-Metallic Sheathed Cable vs YDDECW 8/2 NM-B Wire with Ground 100FT 8 Gauge Non-Metallic Sheathed Cable Pure Copper 8 AWG 2 Conductor Residential Indoor Wire
  • 125ft Roll 8/2 NM-B Gauge Indoor Electrical Black Copper Wire Ground Cable vs Wirenco 8/2 NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire, Used for Wiring Swiches, Outlets and other Loads with Dry Applications (30Ft Cut)
  • 125ft Roll 8/2 NM-B Gauge Indoor Electrical Black Copper Wire Ground Cable vs Southwire 8/2 NM-B with Ground Non-Metallic Sheathed Cable

Buying guides that pick them

  • Best 8/2 NM-B electrical wire with ground
Jacket Type
—
Polyvinyl Chloride (PVC)
Strand Count—7
Safety Features—Ground wire included