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The ITW / Miller Electric 770644 is a heavy-duty, industrial-grade electrical power extension cable designed for high-amperage 230V/250V single-phase welding machines and plasma cutters. This assembly, manufactured under the ITW umbrella for Miller and Hobart brands, provides extended operational reach for industrial jobsites while maintaining high power carrying thresholds and minimizing voltage drop.
Features
Integrated twin neon diagnostic lamps within translucent terminal housings
Visual safety indicator glows immediately when the 230V circuit is energized
Clear-cast Polyvinyl Chloride (PVC) terminal housings for internal inspection
Direct-molded dual-stage outer structural strain reliefs to prevent mechanical tension
Nickel-plated terminal pins to inhibit surface oxidation and chemical rust
High-visibility safety blue finish for jobsite awareness
Engineered resistance to physical scuffs, surface abrasion, and petrochemical exposure
Chemical solvent, oil spray, and UV ray resilience
Moisture-resistant construction for outdoor environmental use
Specifications
Voltage Rating: 230V AC nominal (250V maximum)
Continuous Current Load: 40 Amps
Maximum Peak Amperage: 50 Amps
Power Carrying Threshold: 10,000 Watts
Wire Gauge Size: 8 AWG (American Wire Gauge)
Conductor Complement: 3-Conductor (Line 1, Line 2, Ground)
Service Designation Code: STW (Service grade, Thermoplastic, Weather/Moisture resilient)
Linear Length: 25 Feet (7.62 Meters)
Conductor Composition: 100% pure electrolytic bare copper
Conductor Flexibility: Stranded annealed multi-wire with 30-gauge fine strands
