Cummins Onan GFBC Specs (Power | Fuel Consumption)

The Cummins Onan GFBC generator is listed with standby output of 250 kW, Natural Gas fuel, 60 Hz operation, and 8 available voltage configurations.

Cummins Onan Generator Specifications

Generator • Natural Gas • 60 Hz

Standby power: 250 kWVoltage options: 8 configurationsDry weight: 7,141 lb (3,239 kg)

Key specifications

250 kW Standby power

Natural Gas Fuel

8 configurations Voltage options

7,141 lb (3,239 kg) Dry weight

60 Hz Frequency

Useful generator charts

Charts are shown only when this model has enough usable source data.

Power-to-weight

Standby output per 1,000 lb of dry weight versus similar-output Cummins Onan models.

This model

35 kW

Peer average

45.1 kW

38th percentile

Power output

Low 225 kW High 250 kW

Standby

250 kW

Prime

225 kW

Model spec snapshot

Representative numeric specifications from this generator.

250 kWStandby

7,140.77 lbWeight

How the Cummins Onan GFBC compares

This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.

Standby power

250 kW

7% above avg

62nd percentile

Dry weight

7,141 lb

21% above avg

74th percentile

Oil capacity

8.98 gal

17% above avg

62nd percentile

Standby power250 kW

Low 150 kWAverage 232.8 kWHigh 354.6 kW

About 7% above the similar-output Cummins Onan average. Around the 62nd percentile for this field.

Dry weight7,141 lb

Low 2,199 lbAverage 5,923 lbHigh 12,467 lb

About 21% above the similar-output Cummins Onan average. Around the 74th percentile for this field.

Oil capacity8.98 gal

Low 1.81 galAverage 7.66 galHigh 13.73 gal

About 17% above the similar-output Cummins Onan average. Around the 62nd percentile for this field.

This model Peer average

Generator information

Manufacturer	Cummins Onan
Model	GFBC
Generator type	Generator
Fuel	Natural Gas
Frequency	60 Hz

Electrical output

Standby power	250 kW
Prime power	225 kW
Standby kVA	312.0
Voltage options	120/208 V, 127/220 V, 139/240 V, 220/380 V, 240/416 V, 254/440 V, 277/480 V, 347/600 V
Power factor	0.8

Engine, cooling and controls

Engine model	Cummins/Onan GTA855e
Engine displacement	854 cu in (14 L)
Aspiration / cooling	Turbocharged
Rated engine speed	1800 rpm
Engine oil capacity	8.98 gal (34 L)
Engine coolant capacity	19.5 gal (74 L)
Oil capacity	8.98 gal (34 L)
Coolant capacity	19.5 gal (74 L)
Maximum ambient	104 °F (40 °C)
Controller	PowerCommand 3.3, PowerCommand digital electronic
Emissions	EPA SI NSPS Certified

Physical specifications

Dry weight	7, 141 lb (3, 239 kg)
Dimensions (L × W × H)	147 × 70 × 79 in (3734 × 1778 × 2007 mm)

Battery

Battery group	8D
Battery cranking	900 CCA
Battery voltage	24 V
Battery quantity	2

Fuel consumption

Standby	1810 L/h @ 0%; 25%; 50%; 75%; 100%
Prime	2334.0 L/h @ 0%; 2880.0 L/h @ 1%

Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.