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Deal.ai › Southwire
Southwire
8-2 CU NM-B WITH GROUND 2500 FT
Southwire

8-2 CU NM-B WITH GROUND 2500 FT

Best price now

$35.99at AmazonChecked 13 h ago

Compared across 2 stores. Prices are checked against each store and labelled with when. As an Amazon Associate, Deal.ai earns from qualifying purchases.

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Price facts

  • Lowest price today: $35.99 at Amazon (checked Nov 10, 2026).
  • Checked at 2 stores.

    • Our take on the 8-2 CU NM-B WITH GROUND 2500 FT

    Southwire 8/2 UF-B is a 500 ft spool of 8 AWG copper feeder cable with two insulated conductors plus a bare ground, rated 40 amps at 600 volts. Its PVC jacket is listed for direct earth burial, so it can run to a detached garage, shed, well pump or outdoor panel without conduit. The stranded copper and 90°C rating make it easier to pull than solid wire and give headroom for derating. It is a heavier, stiffer cable than indoor NM-B, and it costs more than 10/2 or 12/2 UF-B, so it suits feeders and subpanels rather than branch circuits.

    Best forBuried feeder to a detached garage or shedSubpanel feed from a main house panelWell pump and outdoor equipment circuitsOutdoor lighting and receptacle runs
    Pros
    • Direct-burial rated, no conduit needed in most soil
    • 8 AWG copper carries 40 amps at 600 volts
    • Stranded conductors pull and bend more easily than solid
    • 90°C insulation rating allows derating headroom
    • Two conductors plus ground covers 240V feeder needs
    • UL listed and compliant with the current NEC edition
    Cons
    • Stiff and heavy to handle in cold weather
    • Needs 18 inches of burial depth under the NEC in most cases
    • More expensive than smaller 10/2 or 12/2 UF-B
    • Not for indoor exposed runs where NM-B is allowed
    • Cutting and terminating 8 AWG takes proper tools

    8-2 CU NM-B WITH GROUND 2500 FT prices at every store

    • The Home DepotNew

      In stock

      $103.00Free shippingChecked 13 h ago
      Visit The Home Depot
    • AmazonNew

      Availability unknown

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

      $35.99Free shippingChecked 13 h ago
      Visit Amazon

    8-2 CU NM-B WITH GROUND 2500 FT price history

    Lowest price we've seen: $35.99 on Nov 10 at Amazon. Tracked across 2 stores since Nov 10.

    What reviewers say

    Owners of Southwire UF-B generally report the jacket holds up in buried runs and the stranded copper is easier to work than expected. Complaints center on stiffness in cold weather and the effort of stripping 8 AWG.

    What people mention
    • Jacket durabilityPraisedOwners say the PVC jacket holds up in direct-burial runs and resists abrasion.
    • FlexibilityCriticisedReviewers find the cable stiff, especially in cold weather, which makes routing harder.
    • StrippingMixedSome say the insulation strips cleanly with the right tool; others nick the copper.
    • Stranded copperPraisedBuyers like that the stranded conductors pull and bend more easily than solid wire.
    • Spool handlingCriticisedThe full spool is heavy and awkward to move around a job site.

    Specifications

    Conductor Material
    Copper
    Ampacity
    40 Amps
    Voltage Rating
    600 Volts
    Conductor Size
    10 AWG (grounding conductor)
    Type
    Underground Feeder Cable UF-B
    Wire Configuration
    Multi-conductor (2 conductors + 1 ground conductor)
    Length
    500 ft

    Questions and answers

    Can this cable be buried without conduit?
    Yes. UF-B is listed for direct earth burial, though the NEC still sets minimum burial depth, typically 18 inches for this type of feeder.
    What size breaker does 8/2 UF-B need?
    It is rated 40 amps, so it pairs with a 40-amp breaker for a feeder or subpanel. Confirm the load and derating with a licensed electrician.
    Is this the same as 8/2 NM-B?
    No. NM-B is for indoor dry locations. UF-B has a tougher jacket rated for wet and buried locations, so use it outdoors and underground.
    Can I use it for a 240V subpanel?
    Yes. Two insulated conductors plus ground suit a 240V feeder to a detached garage or shed panel, sized to the load.
    How many conductors does it have?
    Two insulated 8 AWG conductors plus one bare ground conductor, for a total of three wires.
    Does it work in conduit?
    Yes, it can be run in conduit, but its stiff jacket makes long pulls harder than with individual THHN conductors.
    Where is the 8-2 CU NM-B WITH GROUND 2500 FT cheapest?
    At Amazon, for $35.99, as of our latest check.
    Where can I buy the 8-2 CU NM-B WITH GROUND 2500 FT?
    2 stores we checked sell it, including The Home Depot, Amazon.

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    Stores we've priced the 8-2 CU NM-B WITH GROUND 2500 FT at

    • Home Depot deals and prices

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    Wire Gauge
    8 AWG
    Outer Diameter
    0.68 in x 0.30 in (nominal)
    Number Of Conductors
    2
    Construction Type
    Stranded
    Material
    PVC (Polyvinyl Chloride)
    Environment
    Direct earth burial
    Certifications
    UL Standard 83, 2023 NEC (Current Edition) Compliant
    Quantity
    500 ft
    Packaging Type
    Spool
    Max Temperature Rating
    90°C
    Jacket Type
    PVC Jacket (Polyvinyl Chloride)
    Color
    Grey
    Strand Count
    7
    Compatible With
    Conduit systems (optional)
    Weather Resistance
    Direct earth burial rated
    Abrasion Resistance
    Resists abrasion