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Southwire
Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

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$370.67at WirencoChecked Nov 10

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Price facts

  • Last seen at $370.67 at Wirenco on Nov 10.

Our take on the Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

Southwire 10/2 Romex NM-B is non-metallic sheathed cable for dry, indoor residential branch circuits. It carries two 10 AWG conductors plus a ground in a 30 mil PVC sheath, rated 600 volts, with THHN-style nylon-covered insulation. The 10-gauge copper suits 30-amp circuits such as dryers, water heaters and large appliances, where 14/2 and 12/2 cable cannot go. It meets UL 83, UL 719 and federal A-A-59544 specs and is lead-free and RoHS compliant.

Best for30-amp appliance and dryer circuitsWater heater and AC hookupsDIYers wiring dry indoor runsRemodels needing 10-gauge branch circuits
Pros
  • 10 AWG copper handles 30-amp circuits
  • Two conductors plus ground in one sheath
  • 600-volt rating, 90°C insulation
  • Meets UL 83, UL 719 and federal specs
  • Lead-free and RoHS compliant
Cons
  • Ampacity limited to the 60°C column per NEC
  • Indoor dry locations only, not for wet or exposed outdoor use
  • Stiffer and harder to pull than 14/2 or 12/2
  • Not for conduit fill where single THHN is preferred

Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire prices at every store

  • WirencoNew

    In stockReturn policy

    $370.67Checked Nov 10
    Visit Wirenco

What reviewers say

Electricians and DIYers treat Southwire NM-B as standard, code-compliant branch cable. They praise the jacket strip and conductor quality and note the stiffness of 10-gauge runs.

What people mention
  • Build qualityPraisedOwners say the copper is solid and the sheath is tough and clearly marked.
  • Ease of pullingCriticisedThe 10-gauge cable is stiff and takes effort to fish through framing and bends.
  • Code compliancePraisedBuyers rely on the UL and NEC markings for inspection-ready residential work.

About the Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire

Southwire 10/2 Romex NM-B is a non-metallic sheathed cable for residential indoor wiring in normally dry locations. It is used for branch circuits that serve outlets, lighting and other residential loads. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness.

Each conductor has color-coded PVC insulation with a nylon covering that meets the required thickness of Type THHN. A 30 mil color-coded PVC sheath covers the finished assembly. The cable is lead free and RoHS compliant.

The cable is rated at 600 volts. The conductors are rated at 90°C dry, but under NEC 2008 and NEC 2011 the ampacity is limited to 60°C. Its applications are outlined in NEC 2008 and NEC 2011 Article 334.

Type
NM-B non-metallic sheathed cable
Wire size
10 AWG
Conductors
2 plus ground
Ground wire
10 AWG
Voltage rating
600 volts
Ampacity
30 amps allowable
Temperature rating
Conductor insulation and sheath rated 90°C; ampacity limited to 60°C
Insulation
Color-coded PVC with nylon covering, Type THHN thickness
PVC thickness
0.76 mm / 0.029 inches
Nylon thickness
0.13 mm / 0.005 inches
Sheath
30 mil color-coded PVC
Cable dimensions
Nominal 14.2 mm x 0.55 inches
Weight
0.254 lbs per foot
Use
Residential indoor wiring, normally dry locations
Standards
UL 83, UL 719, Federal Specification A-A-59544, NEC requirements, applicable ASTM specifications
Compliance
Lead free, RoHS compliant

Questions and answers

What circuits is 10/2 NM-B used for?
It is used for 30-amp, 240-volt branch circuits such as electric dryers, water heaters and large appliances. It has two current-carrying conductors plus a ground.
Can it be used outdoors or in wet areas?
No. NM-B is for normally dry, indoor locations. It may be fished through masonry or tile walls only where not exposed to moisture or dampness.
What is its ampacity?
The insulation is rated 90°C dry, but the NEC limits ampacity to the 60°C column. For 10 AWG copper that is 30 amps.
Does it include a ground wire?
Yes. It has two insulated conductors plus a bare ground conductor in the sheath.
What lengths does it come in?
It is offered in 50, 100 and 250 foot lengths. Choose the length that covers your run with some slack.
Is it lead-free?
Yes. Southwire states the cable is lead-free and RoHS compliant.
Where is the Southwire 10/2 Romex NM-B, Non-Metallic, Sheathed Cable, Residential Indoor Wire cheapest?
At Wirenco, for $370.67, as of our latest check.

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