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Generac MG300 Generator Set

The Generac MG300 is a 300 kW (375 kVA) Natural Gas standby generator set powered by a Generac MG300 engine. It is available at 120/208 V, 120/240 V, 277/480 V and 346/600 V, 3-phase, 60 Hz and rated 1041 A. It holds about 34.3 L (9.1 gal) of oil and 54.9 L (14.5 gal) of coolant, with a maximum ambient rating of 40 °C. Starting uses 12 group-2 batteries rated 1000 CCA at 12 V. The set measures 3524.1×1463.1×1728.3 mm (138.7×57.6×68.0 in), weighs about 2998 kg (6609 lb) and produces 90 dBA at 7 m.

300 kW
Standby
14.17 L
Displacement
34.3 L
Oil capacity
1
Document types

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Specifications

FuelNatural Gas
Frequency60.0 Hz
Standby power300 kW
Standby kVA375
Prime power270 kW
EmissionsEPA Certified
ControllerDigital G-200, PowerZone Pro Sync
Oil capacity34.3 L
Alternator520
Voltage options120/208 V, 120/240 V, 277/480 V, 346/600 V
PhaseThree-Phase
Rated current1041 A
Power factor0.8
Circuit breaker1042 A
Battery group2
Battery cranking1000 CCA
Battery voltage12 V
Battery quantity12
Coolant capacity54.9 L
Max ambient40 °C
Dimensions (L×W×H)3524×1463×1728 mm
Dry weight2998 kg
Sound level90.0 dBA @ 7 m
Fuel tank0.0 L
Tank runtime0 hr

Engine

Generac MG300
Oil capacity34.3 L
Coolant capacity54.9 L
Displacement14.17 L
AspirationTurbocharged/Aftercooled
Rated speed1800 rpm

Common questions

What is the power rating of the Generac MG300?

The Generac MG300 is rated 300 kW standby (375.0 kVA).

What engine does the Generac MG300 use?

The Generac MG300 is powered by the Generac MG300 engine.

What fuel type does the Generac MG300 take?

The Generac MG300 runs on Natural Gas.

What's the oil capacity on a Generac MG300?

The Generac MG300 engine in the Generac MG300 has an oil capacity of 34.3 liters.

What alternator comes on the Generac MG300?

The Generac MG300 uses a 520 alternator.

Fuel consumption

RatingLoadL/hgal/h
Prime25%34.08.98
Prime50%52.713.92
Prime75%69.718.41
Prime100%88.323.33
Standby25%1029.729.2
Standby50%196.8452.0
Standby75%277.8573.4
Standby100%216.1557.1

Available documents

Spec sheet — 0l0032c-mg300-rev-a (Generac)Spec sheet — mg300-300kw-industrial-gaseous-generator-specsheet (Generac)