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257239 - Miller 8/4 Power Cord 7.5ft Non-Stripped

Packaging: 1 PER EA
$447.64/EA $276.87/1 PER EA only $276.87/EASave 38%

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OVERVIEW

Technical Overview of the Miller 257239 Power Cable

The Miller 257239 is a specialized power input cable designed for industrial welding equipment. Engineered to meet the rigorous demands of heavy-duty welding environments, this cable features a robust 8 American Wire Gauge (AWG) thickness across four distinct conductors (8/4 configuration). The 8 AWG specification ensures that the cable can safely transmit the high amperage current required by professional power sources without excessive voltage drop or heat generation, maintaining the efficiency and longevity of the machine's internal components.

This assembly measures 7.5 feet in length, a standard dimension that balances reach with cable management, preventing excessive slack that could become a tripping hazard in a busy shop. The cable is supplied with non-stripped ends. This technical decision allows the installer complete control over the termination process. Whether the application requires a direct hardwired connection into a disconnect box or the installation of a specific NEMA-rated plug (such as a NEMA 14-50 or L14-30), the raw ends ensure that the insulation remains intact until the precise moment of installation, preventing fraying or oxidation of the copper strands during storage and shipping.

The outer jacket is constructed from durable, industrial-grade material designed to withstand the harsh conditions typical of metal fabrication sectors. It offers resistance against abrasion, cuts, and incidental contact with oils or coolants. Inside, the four conductors are color-coded to standard electrical conventions to facilitate correct phasing and grounding during installation. As a genuine Miller Electric OEM part, the 257239 guarantees compatibility with the strain relief mechanisms and terminal blocks of the specific Miller machines it is intended for, ensuring a secure mechanical and electrical bond.

Proper input power delivery is critical for arc stability and machine performance. Using a cable with insufficient gauge or compromised insulation can lead to erratic welding output and safety hazards. This replacement component restores the original factory specifications of the welding power source, ensuring compliance with electrical codes and safety standards.

Additional Information
Brand:Miller
Packaging Description:1 Per Ea
Cable Length:7.5 ft
Wire Gauge:8 AWG
Conductors:4
Termination Style:Non-Stripped Ends
Product Type:Power Input Cable

INCLUDED

  • (1) 7.5 Ft Power Cable, 8/4 AWG (Non-Stripped)

APPLICATIONS

  • Replacement of damaged or frayed power input cords on Miller welding machines.
  • Upgrading existing power cables to ensure proper gauge and conductor count.
  • Custom installation requiring specific plug termination or hardwiring.
  • Industrial shop environments requiring durable, abrasion-resistant cabling.
  • Connecting 1-phase or 3-phase power sources (depending on machine wiring).

FAQ

The cable utilizes 8 AWG (American Wire Gauge) wire, which is suitable for carrying significant electrical current required by welding power sources.

This cable has 4 conductors (8/4 configuration), typically used for three-phase power or single-phase applications requiring a neutral and ground.

No, the Miller 257239 comes with non-stripped ends. You will need to strip the insulation and install the appropriate plug for your outlet or hardwire it directly.

The cable is 7.5 feet long, providing a standard reach for connecting welding machines to nearby power disconnects or receptacles.

Yes, this is a genuine Miller OEM replacement part, ensuring compatibility and quality consistent with your original equipment.

Non-stripped ends allow the user to cut and strip the wire to the precise length needed for their specific terminal block and plug type, ensuring a clean and custom fit.

Generally, yes. A 4-conductor cable can be wired for three-phase (3 hots + ground) or single-phase (2 hots + neutral + ground), depending on the machine's requirements.

This cable fits specific Miller power sources. We recommend checking your machine's parts manual or verifying with the serial number to ensure the 257239 is the correct part for your model.