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8/2 NM-B Electrical Wire, 125 ft vs Southwire 8/2 NM-B Cable

These are the same cable on paper: 8/2 NM-B with ground, 125 ft, 40 A ampacity, 600 V, 90°C, 7-strand copper, PVC jacket. Southwire is the brand most electricians and inspectors know by name, and its NM-B is stocked everywhere, so it is the safer default when you want a known label and easy returns. The Sunco roll adds a SuperSlick Elite pull jacket that can make long runs through studs and boxes easier. Buy Southwire for the familiar brand and broad availability; buy Sunco if slick pulling matters on your run.

  • Choose the Sunco 8/2 NM-B if you want a smoother-pulling jacket for long or tight runs and the specs otherwise match Southwire.
  • Choose the Southwire 8/2 NM-B if you want the brand most electricians and inspectors recognize and the widest availability.

Prices

  • 8/2 NM-B Electrical Wire, 125 ft: $242.99 at Amazon (last seen Nov 2)
  • Southwire 8/2 NM-B Cable: $34.99 at Amazon (checked today)
  • Difference: the Southwire 8/2 NM-B Cable is $208.00 cheaper than the 8/2 NM-B Electrical Wire, 125 ft at the latest prices (Nov 2 and Nov 10)
1
125ft Roll 8/2 NM-B Gauge Indoor Electrical Black Copper Wire Ground Cable

8/2 NM-B Electrical Wire, 125 ft

125ft Roll 8/2 NM-B Gauge Indoor Electrical Black Copper Wire Ground Cable

$242.99at AmazonChecked Nov 2
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Visit Amazon

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Pros
  • SuperSlick Elite jacket pulls and strips more easily
  • Full 8/2 NM-B ratings: 40 A, 600 V, 90°C
  • Annealed copper strands resist corrosion
  • 125 ft covers most long branch runs
Cons
  • Less familiar brand to inspectors and electricians
  • Harder to find locally for a mid-job top-up
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 1 h ago
See all prices and details
Visit Amazon

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

Pros
  • Brand electricians and inspectors know
  • Widely stocked, easy to match or extend a run
  • Same 40 A, 600 V, 90°C ratings
  • Standard PVC/nylon jacket holds up in dry locations
Cons
  • Standard jacket is stiffer to pull than a slick jacket
  • No extra pull-ease feature

What separates them

8/2 NM-B Electrical Wire, 125 ftSouthwire 8/2 NM-B Cable
Brand recognitionSunco label; less common in electrical aislesSouthwire is a standard name in residential wiring
JacketSuperSlick Elite jacket for easier pulling and strippingStandard PVC jacket with nylon
Electrical specs8 AWG, 2 conductors plus ground, 40 A, 600 V, 90°C8 AWG, 2 conductors plus ground, 40 A, 600 V, 90°C
Conductor7-strand annealed copper7-strand copper
Length125 ft roll125 ft roll
AvailabilityFewer stores carry itStocked at most hardware and electrical suppliers
Use locationsDry, exposed or concealed residential branch circuitsDry, exposed or concealed residential branch circuits

Price history

  • 8/2 NM-B Electrical Wire, 125 ft: lowest $242.99 on Nov 3 at Amazon.
  • Southwire 8/2 NM-B Cable: lowest $34.99 on Nov 10 at Amazon.

Prices at every store

8/2 NM-B Electrical Wire, 125 ft

  • AmazonNew

    Availability unknown

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

    $242.99Checked Nov 2
    Visit Amazon
  • SuncoNew

    Availability unknownReturn policy

    $279.90Checked 1 h ago
    Visit Sunco
  • Home DepotNew

    Availability unknown

    $302.00Checked Nov 2
    Visit Home Depot
  • ZoroNew

    Availability unknown

    $402.99Checked Nov 2
    Visit Zoro
All 4 stores and price history →

Southwire 8/2 NM-B Cable

  • The Home DepotNew

    In stock

    $103.00Free shippingChecked 1 h ago
    Visit The Home Depot
  • RSNew

    In stockSold by America

    $188.94+ $82.00 shippingChecked 1 h ago
    Visit RS
  • HD SupplyNew

    In stock

    $287.00Free shippingChecked 1 h ago
    Visit HD Supply
  • AmazonNew

    Availability unknown

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

    $34.99Checked 1 h ago
    Visit Amazon
All 13 stores and price history →

Specs compared

Spec8/2 NM-B Electrical Wire, 125 ftSouthwire 8/2 NM-B Cable
Conductor MaterialCopperCopper
Ampacity40 A40 A
Voltage Rating600 volts600 volts
Conductor Size8 AWG8 AWG
TypeNM-B (nonmetallic-sheathed)NM-B (nonmetallic-sheathed)
Wire ConfigurationNonmetallic with Ground Sheathed CableNonmetallic with Ground Sheathed Cable
Insulation MaterialPVCPVC
Number Of Conductors22
MaterialCopperCopper
Length125 ft125 ft
Wire Gauge8 AWG8 AWG
Diameter0.141 inch (0.36 cm) (Over Conductor)0.141 inch (0.36 cm) (Over Conductor)
Show all 31 specsShow fewer specs
Spec8/2 NM-B Electrical Wire, 125 ftSouthwire 8/2 NM-B Cable
Outer Diameter0.628 x 0.278 inch (1.60 x 0.71 cm)0.628 x 0.278 inch (1.60 x 0.71 cm)
Thickness30 mils (0.76 mm) (Jacket)30 mils (0.76 mm) (Jacket)
ApplicationResidential wiring of branch circuits, Commerci…Residential wiring of branch circuits, Commerci…
Weather ResistanceMoisture ResistantMoisture Resistant
Quantity125 ft125 ft
Packaging TypeCoil, REEL, SPOOLCoil, REEL, SPOOL
Max Temperature Rating90°C90°C
Jacket TypePolyvinyl Chloride (PVC)Polyvinyl Chloride (PVC)
Color

What reviewers say

8/2 NM-B Electrical Wire, 125 ft

Buyers of NM-B cable generally judge it on how easily it pulls and strips and whether the jacket holds up. This type is widely regarded as standard, code-compliant branch-circuit cable, with complaints mostly about stiffness and cost rather than quality.

What people mention
  • JacketPraisedReviewers say the slick jacket pulls and strips more easily than plain NM cable.
  • FlexibilityCriticised8 AWG copper is stiff, and owners say bending it in tight boxes takes effort.
  • BuildPraisedBuyers describe solid copper conductors and a durable jacket.
  • ValueMixedCopper content makes it expensive per foot, though buyers accept it as a code-standard cable.

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 40 A range or subpanel run?
Either works. Both are 8/2 NM-B rated 40 A at 600 V, so pick based on availability and jacket feel, not capacity.
Does the slick jacket on the Sunco cable matter?
It can on long pulls through studs and tight boxes. On short, straight runs you will barely notice the difference.
Which lasts longer?
Both use copper conductors, PVC insulation and a PVC jacket rated to 90°C. Installed correctly in dry locations, service life should be comparable.
Is it worth stepping up to Southwire?
If you want a brand your inspector and local supply house recognize, yes. The electrical performance is the same.
Can I mix the two brands on one circuit?
Yes, as long as both are 8/2 NM-B with ground and you splice in an accessible box with approved connectors.
Is either rated for wet or outdoor locations?
No. Both are NM-B for normally dry, exposed or concealed work. Use UF cable for wet or buried runs.

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Buying guides that pick them

  • Best 8/2 NM-B electrical wire with ground
Black
Black
Strand Count77
Safety FeaturesGround wire includedGround wire included
Strands per Conductor7—
Ground Size1x10—
Overall Length125 ft—
Jacket ColorBLACK—
Jacket MaterialPVC—
Insulation Temperature90°C—
Nominal Outside Diameter0.63 in—
Maximum Dry Temperature194 °F—