Southwire NM-B cable with black outer jacket for dry above-ground wiring.
Southwire NM-B cable ground conductor shown for safe branch circuits.
Close-up of PVC jacket and nylon insulation on NM-B cable.
600-volt rating label on Southwire NM-B cable for planning installations.
UL-listed logo indicating quality and compliance for NM-B cable.
125 ft length packaging for longer wiring runs.

Southwire

Southwire NM-B 8/3 Romex Cable, 125 ft, Black — 600V UL Listed

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$391.98

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Why customers choose TaskHolt Tools

Overview

Southwire's NM-B Romex cable is designed to power branch circuits in both residential and commercial settings with efficiency and reliability. The 8/3 configuration includes a ground conductor, all housed in a black PVC jacket with nylon-insulated conductors—built for dry, above-ground installations where clean, organized wiring is essential. Whether you're wiring a kitchen, a living space, an office, or a workshop, this cable aims to streamline runs along walls, basements, or attics while staying within standard electrical codes.

Key capabilities

  • Designed for residential and commercial branch circuits
  • Installation above ground and in dry locations only
  • Approved for service to 600 volts

Durability and safety

  • PVC jacket with flame-retardant and crush-resistant properties
  • Grounded conductors provide a safe path for power distribution
  • UL-listed for standard electrical installations

Practical uses

With a 125 ft length, the NM-B cable supports long, clean runs for multiple outlets, lighting circuits, or HVAC accessories in both homes and light commercial spaces. The 8/3 configuration suits multi-wire branch circuits that share a neutral in dry areas, helping simplify provisioning and organization. In daily projects, you may route this cable through walls or attics, keeping it dry and protected while meeting common code requirements. Always verify local regulations and hire qualified professionals as needed.

Product specs at a glance

  • Type: NM-B Romex
  • Length: 125 ft
  • Jacket: Black PVC
  • Conductor insulation: PVC with nylon jacket
  • Configuration: 8/3 with ground
  • Voltage rating: Up to 600 V
  • Listing: UL-listed

Why choose Southwire NM-B? It blends standard sizing with durable materials designed for dry, above-ground installations and UL-listed assurance, supporting sound electrical planning in both home and business projects. This description highlights possibilities and practical uses rather than guarantees, emphasizing safety best practices and code compliance.

FAQ

Q: What is NM-B WG Romex used for?

A: Designed for residential and commercial branch circuits; installs above ground in dry locations; rated up to 600 volts; UL-listed.

Q: What durability features does this NM-B cable offer?

A: PVC jacket with nylon-insulated conductors and a ground; flame-retardant and crush-resistant construction.

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