Miller
Big Blue 800 Duo Pro
25.0 gal
Fuel capacity
15.0 kVA
Power output
Equivalent across brands
Compare side by side →Comparable machines from other manufacturers, scored on normalised, manufacturer-sourced specs.
| Model | Match | Fuel capacity | Power output |
|---|---|---|---|
| Echo DGW400DML | 55% | 11.4 gal | 23.6 kVA |
Full specifications
| Amperage | 20 A - 800 A | ↗ |
| Applications | Process Pipe Structural Welding Fabrication Mobile Fabrication & MRO | ↗ |
| Cold Weather Starting Aids | Engine Block Heater Glow Plugs | ↗ |
| Compressed Air | no | ↗ |
| Current Type | DC | ↗ |
| Engine Brand | Deutz® | ↗ |
| Engine Compliance | T4F | ↗ |
| Engine Idle Speed | 1350 RPM | ↗ |
| Engine Weld Speed | 1800 RPM | ↗ |
| Fuel Tank Size | 25 gal. | ↗ |
| Fuel Type | Diesel | ↗ |
| Horsepower | 65.7 hp | ↗ |
| Industries | Construction & Fabrication Mining Pipe Railcar | ↗ |
| Max Open Circuit Voltage | 85 VDC | ↗ |
| Net Height | 46 in (117 cm) | ↗ |
| Net Length | 69.5 in (177 cm) | ↗ |
| Net Weight | 1,870 lbs (848 kg) | ↗ |
| Net Width | 28.5 in (72.4 cm) | ↗ |
| Portability | Fork Pockets Lift Eye (Standard) Trailer (Optional) | ↗ |
| Rated Carbon Diameter | 1/2 in (12.7 mm) | ↗ |
| Rated Output | Separate (dual outputs, each side): CC/DC - 400 A at 36 V; CV/DC - 400 A at 34 V / Paralleled (combined):CC/DC - 700 A at 44 V, 800 A at 38 V; CV/DC - 750 A at 40 V, 800 A at 38 V | ↗ |
| Single Phase Auxiliary Continuous Power | 12000 W | ↗ |
| Single Phase Auxiliary Peak Power | 15000 W | ↗ |
| Sound Rating | Idle: 71.3 dB / Weld: 78.9 dB | ↗ |
| Three Phase Auxiliary Continuous Power | 20000 W | ↗ |
| Three Phase Auxiliary Peak Power | 27000 W | ↗ |
| Warranty | 3 Years Miller's True Blue Warranty | ↗ |
| Weld Output | CC / CV | ↗ |
| Weldable Metals | Stainless Steel Steel | ↗ |
Every figure is traced to the manufacturer’s published data. ↗ opens the source.
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