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6
6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order

6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order

Best price now

$4.93at WirencoChecked 1 h ago

99% under what the other stores charge

Compared across 14 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $4.93 at Wirenco (checked Nov 12, 2026).
  • Checked at 14 stores.

Our take on the 6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order

This is 6-gauge, 3-conductor NM-B non-metallic sheathed cable with a bare 10 AWG ground, sold cut to length. It is the standard branch-circuit cable for dry, indoor residential wiring, rated 600 volts, with PVC/nylon THHN-type conductors and a 30 mil PVC sheath. The 6 AWG copper makes it suited to high-draw circuits such as ranges, dryers, subpanels and EV chargers, where 10 and 12 AWG cable cannot carry the load. It is a commodity item, so the differences between brands come down to copper quality, sheath toughness and how cleanly it pulls.

Best forHigh-amp appliance circuits (ranges, dryers)Subpanel and feeder runsEV charger installationResidential remodels and new branch circuits
Pros
  • 6 AWG copper handles heavy residential loads
  • Three conductors plus a 10 AWG ground in one sheath
  • Rated 600 V and 90°C conductor insulation
  • Lead-free and RoHS compliant
  • Meets UL 83, UL 719 and ASTM specs
Cons
  • Stiff and hard to bend in tight spaces
  • Ampacity limited to the 60°C column under NEC
  • Not for wet, damp or exposed outdoor locations
  • Cut-to-order lengths mean no returns on miscuts

6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order prices at every store

  • WirencoNew

    In stockReturn policy

    $4.93Checked 1 h ago
    Visit Wirenco
  • The Home DepotNew

    In stock

    $110.00Free shippingChecked 1 h ago
    Visit The Home Depot
  • TikTok ShopNew

    In stock

    $450.00Free shippingChecked 1 h ago
    Visit TikTok Shop
  • Hartville HardwareNew

    In stock

    $535.07Free shippingChecked 1 h ago
    Visit Hartville Hardware
  • Do it BestNew

    In stock

    $559.99+ $21.80 shippingChecked 1 h ago
    Visit Do it Best
  • Carr HardwareNew

    In stock

    $559.99+ $53.00 shippingChecked 1 h ago
    Visit Carr Hardware
  • Gordon Electric SupplyNew

    In stock

    $570.00+ $66.00 shippingChecked 1 h ago
    Visit Gordon Electric Supply
  • WalmartNew

    In stock

    $659.80Free shippingChecked 1 h ago
    Visit Walmart
  • WeSupplyTradesNew

    In stock

    $727.32Free shippingChecked 1 h ago
    Visit WeSupplyTrades
  • Global IndustrialNew

    In stock

    $925.00+ $34.60 shippingChecked 1 h ago
    Visit Global Industrial
  • ZoroNew

    In stock

    $1,233.99Free shippingChecked 1 h ago
    Visit Zoro
  • eBayNew

    In stockSold by zorotools

    $2,755.99Free shippingChecked 1 h ago
    Visit eBay
  • AmazonNew

    Availability unknown

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

    $51.00Free shippingChecked 1 h ago
    Visit Amazon
  • Lowe'sNew

    Availability unknown

    $535.00Free shippingChecked 1 h ago
    Visit Lowe's

Store links may earn us a commission.

6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order price history

Lowest price we've seen: $51.00 on Nov 12 at Amazon. Tracked across 13 stores since Nov 12.

About the 6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order

This is 6/3 NM-B non-metallic sheathed cable with a ground, sold cut to order. It is used in normally dry residential installations as branch circuit wiring for 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, meeting the required thickness of Type THHN. A 30 mil color-coded PVC sheath rated 90°C covers the completed assembly. The ground is soft, bare copper.

The cable is rated at 600 volts. Conductor temperature is rated at 90°C dry, but ampacity is limited to 60°C under NEC 2008 and NEC 2011. Applications are outlined in NEC 2008 and NEC 2011 Article 334. The cable is lead free and RoHS compliant.

Type
NM-B non-metallic sheathed cable with ground
Conductor size
6 AWG
Conductors
3, plus ground
Ground wire
10 AWG, soft bare copper (solid per ASTM B3, stranded per ASTM B3 and B8)
Insulation
Color-coded PVC with nylon covering, Type THHN thickness, rated 90°C
Sheath
30 mil color-coded PVC, rated 90°C
PVC thickness
0.76 mm / 0.029 in
Nylon thickness
0.13 mm / 0.005 in
Cable dimensions
16.0 mm / 0.62 in nominal
Weight
0.357 lbs per foot
Voltage rating
600 volts
Ampacity
55 amps allowable
Use
Indoor, normally dry residential installations
Standards
UL 83, UL 719, Federal Specification A-A-59544, NEC, ASTM specifications
Compliance
Lead free, RoHS compliant
Length
Cut to order

Questions and answers

What is 6/3 NM-B cable used for?
It feeds high-draw 240 V residential circuits: electric ranges, dryers, subpanels and EV chargers. It is for dry, indoor locations only, not outdoors or in wet areas.
How many wires are in 6/3 NM-B?
Three insulated 6 AWG conductors plus a bare 10 AWG ground, all under one PVC sheath. The conductors are color-coded and the ground is bare copper.
What ampacity does 6/3 NM-B carry?
The conductors are rated 90°C, but the NEC limits NM-B ampacity to the 60°C column. In practice that means a 55 A circuit, commonly protected at 50 A.
Can 6/3 NM-B be used outdoors or underground?
No. NM-B is for normally dry, indoor installations. It is not rated for wet or damp locations, direct burial or exposed outdoor runs.
Is 6/3 NM-B the same as 6/3 Romex?
Romex is a brand name for NM-B cable, so the construction is the same. Any listed NM-B meets the same UL 719 standard.
Can 6/3 NM-B be run in conduit?
It can be fished through masonry or tile walls where not exposed to moisture. It is not designed to be pulled through long conduit runs because of its stiffness and sheath.
Where is the 6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order cheapest?
At Wirenco, for $4.93, 99% under what the other stores charge, as of our latest check.
Where can I buy the 6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order?
14 stores we checked sell it, including Wirenco, The Home Depot, Amazon, TikTok Shop, Lowe's.

Stores we've priced the 6/3 NM-B Non-Metallic, Residential Indoor Cable with Ground Cut to Order at

  • Home Depot deals and prices
  • Lowe's deals and prices
  • Walmart deals and prices
  • Zoro deals and prices

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