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NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable

NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable

Best price now

$1,936.59at Echo ElectricChecked Nov 2

22% under what the other stores charge

Compared across 9 stores. Prices are checked against each store and labelled with when.

Visit Echo Electric

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Price facts

  • Last seen at $1,936.59 at Echo Electric on Nov 2.
  • Checked at 9 stores.

Our take on the NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable

This is 8-gauge, 2-conductor NM-B cable with a bare ground, sold as a 125 ft coil. It is rated 600 volts and 90°C in dry locations, which makes it the standard wiring for 40-amp branch circuits such as ranges, subpanels and large appliances. The copper conductors and full-size ground are what set it apart from cheaper aluminum or reduced-ground cable. It is stiff, so runs need generous bend radius and careful pulling.

Best forWiring a 40-amp range or subpanelDry indoor branch circuitsHomeowners and electricians running a single long circuit
Pros
  • Copper conductors conduct better and splice more reliably than aluminum
  • Full-size ground included in the sheath
  • 600 V and 90°C dry rating covers most residential branch circuits
  • 125 ft coil handles long runs without splices
  • NM-B sheath needs no conduit indoors
Cons
  • Stiff 8-gauge copper is hard to bend in tight boxes
  • Dry locations only; not for wet or buried use
  • Needs 40-amp breakers and matching receptacles
  • Heavier and harder to pull than 12- or 14-gauge

NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable prices at every store

  • Echo ElectricNew

    Availability unknown

    $1,936.59Checked Nov 2
    Visit Echo Electric
  • World ElectricNew

    Availability unknown

    $2,333.24Checked Nov 2
    Visit World Electric
  • Crawford Electric SupplyNew

    Availability unknown

    $2,341.87Checked Nov 2
    Visit Crawford Electric Supply
  • NorthEast ElectricalNew

    Availability unknown

    $2,380.33Checked Nov 2
    Visit NorthEast Electrical
  • QED ElectricNew

    Availability unknown

    $2,490.44Checked Nov 2
    Visit QED Electric
  • Cooper ElectricNew

    Availability unknown

    $2,522.94Checked Nov 2
    Visit Cooper Electric
  • North CoastNew

    Availability unknown

    $2,799.81Checked Nov 2
    Visit North Coast
  • Capital Electric SupplyNew

    Availability unknown

    $2,804.97Checked Nov 2
    Visit Capital Electric Supply
  • CodaleNew

    Availability unknown

    $3,109.80Checked Nov 2
    Visit Codale

NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable price history

Lowest price we've seen: $1,936.59 on Nov 3 at Echo Electric. Tracked across 9 stores since Nov 3.

From Crawford Electric Supply

  • NM-B non-metallic sheathed branch circuit cable
  • 8 AWG copper conductors with ground
  • 2 conductors plus ground
  • 125 ft coil
  • 600 volt rated
  • 90 degrees C (DRY) temperature rating
Sizes
125ft, 250ft, 500ft, 1000ft, 2500ft, Cut to Length
Materials
Copper conductors, PVC insulation

About the NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable

This is NM-B non-metallic sheathed cable for branch circuits. It has two 8 AWG copper conductors plus a ground conductor.

The conductors are copper with PVC insulation. The cable is rated for 600 volts and for 90 degrees C in dry locations.

Type
NM-B non-metallic sheathed cable
Conductor size
8 AWG
Configuration
2 conductors plus ground
Material
Copper conductors, PVC insulation
Voltage rating
600 volts
Temperature rating
90 degrees C (dry)
Lengths
125 ft, 250 ft, 500 ft, 1000 ft, 2500 ft, or cut to length

Questions and answers

What can I run on 8/2 NM-B?
It suits 40-amp circuits, typically electric ranges, wall ovens, subpanels and large appliances. The two insulated conductors carry hot and neutral; the bare wire is the ground.
Is 8/2 NM-B the same as 8/3?
No. 8/2 has two insulated conductors plus ground. 8/3 adds a second hot for 240 V loads that need a neutral plus two hots, such as some dryers and ranges.
Can it be used outdoors or underground?
No. NM-B is rated for dry locations only. Outdoors, in wet spots or buried, use UF cable or conduit with THWN conductors.
Does it need conduit?
Not indoors in dry, protected areas. Where it runs exposed in garages or unfinished basements, check local code, which may require physical protection.
How many amps does 8-gauge copper carry?
At the 60°C column used for NM-B terminations, 8 AWG copper is rated 40 amps. The 90°C sheath rating does not raise the breaker size.
Where is the NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable cheapest?
At Echo Electric, for $1,936.59, 22% under what the other stores charge, as of our latest check.
Where can I buy the NM-B Copper w/Ground Non-Metallic Sheathed Branch Circuit Cable?
9 stores we checked sell it, including Echo Electric, Crawford Electric Supply, World Electric, NorthEast Electrical, QED Electric.

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