The Cummins Onan RS 12000 generator is listed with Natural Gas, LP Vapor, LP Liquid fuel, 60 Hz operation, 120/240 V output, Single phase, and sound level of 70 dBA @ 23 ft (7 m).
Generator • Natural Gas, LP Vapor, LP Liquid • 60 Hz • Single phase
Key specifications
Useful generator charts
Charts are shown only when this model has enough usable source data.
How the Cummins Onan RS 12000 compares
This compares the supplied numeric specification with Cummins Onan generators in the same broad standby-power class where enough comparable data exists.
About 95% below the similar-output Cummins Onan average. Around the 16th percentile for this field.
About 7% below the similar-output Cummins Onan average. Around the 35th percentile for this field.
About 95% below the similar-output Cummins Onan average. Around the 14th percentile for this field.
Generator information
| Manufacturer | Cummins Onan |
|---|---|
| Model | RS 12000 |
| Generator type | Generator |
| Fuel | Natural Gas, LP Vapor, LP Liquid |
| Frequency | 60 Hz |
Electrical output
| Prime power | 10 kW |
|---|---|
| Voltage options | 120/240 V |
| Phase | Single phase |
| Power factor | 1 |
| Circuit breaker | 50 A |
Engine, cooling and controls
| Engine model | Cummins/Onan Performer P224 |
|---|---|
| Engine displacement | 60 cu in (0.98 L) |
| Aspiration / cooling | High Motor Starting Reserve |
| Rated engine speed | 3600 rpm |
| Engine oil capacity | 0.92 gal (3.5 L) |
| Oil capacity | 0.92 gal (3.5 L) |
| Controller | RST Transfer Switch |
Physical specifications
| Dry weight | 600 lb (272 kg) |
|---|---|
| Dimensions (L × W × H) | 45 × 34 × 38.8 in (1143 × 864 × 986 mm) |
| Sound level | 70 dBA @ 23 ft (7 m) |
Battery
| Battery group | BCI Group 26 |
|---|---|
| Battery cranking | 530 CCA |
| Battery voltage | 12 V |
| Battery quantity | 1 |
Fuel consumption
| Prime | 0.83 gal/h @ 25%; 1.67 gal/h @ 50%; 2.49 gal/h @ 75%; 3.33 gal/h @ 100% |
|---|---|
| Full load | 9.1 L/h |
| Half load | 4.4 L/h |
| No load | 3.6 L/h |
Maintenance and service parts
| Engine oil | Interval: 100 hr; Specification: Check the engine oil level as explained under Checking Engine Oil Level in this section.; Capacity: 3.5 |
|---|---|
| Oil filter | Interval: 100 hr; Specification: Change the engine oil and oil filter. Also, change the air filter if it is dirty. |
| Air filter | Interval: 500 hr; Specification: Replace Engine Air Filter |
Disclaimer: Specifications should be verified against the official owner’s or service manual and confirmed on the Cummins North America generator website.