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10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order

10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order

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$1.82at WirencoChecked Nov 9

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Price facts

  • Last seen at $1.82 at Wirenco on Nov 9.

Our take on the 10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order

10/3 NM-B is non-metallic sheathed cable for normally dry indoor residential wiring: branch circuits for outlets, lighting and other household loads. It carries three current-carrying conductors plus a ground, is rated 600 volts, and its ampacity is limited to the 60°C column of the NEC even though the conductors are rated 90°C dry. It meets UL 83, UL 719, ASTM and Federal Specification A-A-59544, and is lead free and RoHS compliant. It suits anyone running a 240-volt or high-draw circuit who needs a grounded multi-conductor cable; it is not for wet locations or exposed outdoor runs.

Best forDry indoor branch circuits240-volt appliance and subpanel runsDIY and pro residential rewiringCircuits needing a dedicated ground
Pros
  • Three conductors plus ground in one jacket
  • Rated 600 volts
  • Meets UL 83, UL 719 and ASTM specs
  • Lead free and RoHS compliant
  • Can be fished through masonry or tile walls where dry
Cons
  • Ampacity capped at the 60°C column
  • Not for wet, damp or exposed outdoor use
  • Stiffer and harder to pull than smaller gauges
  • Cut to order, so lengths are fixed once bought

10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order prices at every store

  • WirencoNew

    In stockReturn policy

    $1.82Checked Nov 9
    Visit Wirenco

About the 10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order

This is 10/3 NM-B non-metallic sheathed cable for residential indoor wiring. It is used in normally dry installations as branch circuits for outlets, lighting and other residential loads. Its applications are outlined in NEC 2008 and NEC 2011 Article 334.

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 is applied over the completed assembly. Both the conductor insulation and the sheath are rated 90°C.

The cable is rated at 600 volts. Although the conductor is rated at 90°C dry, its ampacity is limited to 60°C under NEC 2008 and NEC 2011. It may be fished through masonry or tile walls where it is not exposed or subject to excessive moisture or dampness. It is lead free and RoHS compliant.

Type
NM-B non-metallic sheathed cable
Conductor size
10 AWG
Conductors
3
Ground wire
10 AWG
Voltage rating
600 volts
Ampacity
30 Amps
Temperature rating
90°C conductor insulation and sheath; ampacity limited to 60°C per NEC 2008 and NEC 2011
Insulation
Color-coded PVC with nylon covering, Type THHN thickness
PVC thickness
0.51 mm / 0.020 inches
Nylon thickness
0.100 mm / 0.004 inches
Sheath
30 mil color-coded PVC
Dimensions
Nominal cable dimensions 10.9 mm x 0.43 inches
Weight
0.163 lbs per foot
Standards
UL 83, UL 719, Federal Specification A-A-59544, NEC requirements; meets or exceeds applicable ASTM specifications
Compliance
Lead free, RoHS compliant
Use
Normally dry indoor residential installations

Questions and answers

What is 10/3 NM-B cable used for?
Dry indoor residential branch circuits: outlets, lighting and other household loads, including 240-volt runs that need two hot conductors plus neutral and ground. It is not for wet or exposed outdoor locations.
How much current can 10/3 NM-B carry?
The conductors are rated 90°C dry, but the NEC limits NM-B ampacity to the 60°C column. Size the breaker to that 60°C rating, not the conductor's 90°C rating.
Does 10/3 NM-B include a ground wire?
Yes. It has three insulated conductors plus a bare ground, which is what the 10/3 designation means.
Can 10/3 NM-B be buried or run outdoors?
No. It is for normally dry installations. It may be fished through masonry or tile walls only where it stays dry and is not exposed to excessive moisture.
Is NM-B the same as Romex?
Romex is a brand name for non-metallic sheathed cable; NM-B is the current type. This cable meets UL 719 and the NEC requirements for NM-B.
Where is the 10/3 NM-B, Non-Mettalic, Sheathed Cable, Residential Indoor Wire Cut to Order cheapest?
At Wirenco, for $1.82, as of our latest check.

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