The Generac MMG320 compressor is listed with standby output of 278 kW, diesel fuel, 60 Hz operation, 120/208 V, 277/480 V output, Three phase, and sound level of 68 dBA @ 23 ft (7 m).
Generator • diesel • 60 Hz • Three phase
Key specifications
Visual model specs
Built only from this model’s supplied generator specifications.
278 kW
256 kW
How the Generac MMG320 compares
This compares the supplied numeric specification with Generac generators in the same broad standby-power class where enough comparable data exists.
About 9% above the similar-output Generac average. Around the 56th percentile for this field.
About 17% above the similar-output Generac average. Around the 70th percentile for this field.
About 16% below the similar-output Generac average. Around the 7th percentile for this field.
Generator information
| Manufacturer | Generac |
|---|---|
| Model | MMG320 |
| Generator type | Generator |
| Fuel | diesel |
| Frequency | 60 Hz |
Electrical output
| Standby power | 278 kW |
|---|---|
| Prime power | 256 kW |
| Standby kVA | 348.0 |
| Voltage options | 120/208 V, 277/480 V |
| Phase | Three phase |
| Circuit breaker | 1200 A |
Engine, cooling and controls
| Maximum ambient | 120 °F (49 °C) |
|---|---|
| Controller | Microprocessor-based controller |
| Emissions | Tier III |
Physical specifications
| Dry weight | 8, 038 lb (3, 646 kg) |
|---|---|
| Dimensions (L × W × H) | 155.9 × 59.8 × 90.2 in (3960 × 1520 × 2290 mm) |
| Sound level | 68 dBA @ 23 ft (7 m) |
Battery
| Battery cranking | 1000 CCA |
|---|---|
| Battery quantity | 2 |
Fuel system and runtime
| Fuel tank | 458.9 gal (1, 737.3 L) |
|---|---|
| Tank runtime | 24 hr |
Disclaimer: Specifications should be verified against the official owner’s manual and confirmed on the Generac USA website.