Heavy-duty engine-driven welders from 300 to 500 amps in gas and diesel, for structural, pipe and heavy-repair work in the field. The Miller Trailblazer 330 shown is a full multiprocess machine — stick, TIG, MIG, flux-core and air-carbon arc gouging — that also produces up to 12,000 watts of generator power. Larger diesel units are available for high-amperage and all-day heavy work; call to confirm current fleet.
| Specification | Details (Miller Trailblazer 330) |
|---|---|
| Weld Output | 20–330 A DC |
| Processes | Stick, DC TIG, MIG, flux-core, air-carbon arc gouging (up to 1/4 in carbons) |
| Generator Power | 12,000 W peak / 10,500 W continuous |
| Engine | 23.5 HP Kohler gas with electronic fuel injection; diesel units to 500 A available |
| Fuel Capacity | 11 gal — EFI cuts fuel use up to 42% vs. carbureted machines |
| Weight | Approx. 400 lbs (truck- or trailer-mounted) |
True Multiprocess: One machine covers stick, TIG, wire and gouging — switch processes without changing equipment.
Heavy Output: 300–500 A range runs large-diameter electrodes and carbon-arc gouging for demolition-grade metal removal.
Serious Generator: Up to 12,000 W powers a full crew’s tools alongside the arc.
Fuel Efficient: Auto-speed engine control and EFI stretch every tank across a full shift.
Common uses: structural steel erection and repair; pipeline and pipe-spool welding; heavy equipment repair in the field; carbon-arc gouging and demolition prep; remote jobs needing weld power plus generator power.
