Cummins Onan · Inverter generator
Onan P11000iTF
High-output 120/240V inverter power with gasoline, propane, or natural-gas operation.
Visual spec gallery
The numbers, made scannable.
Up to 11,000 peak watts
Power output changes by fuel. Match against the rating for the fuel you will actually use.
Gas · 25% load
16.5hr
Propane · 25% load
6.7hr
Operational volume
64 dBA
Manufacturer-rated minimum
Onboard tank
7.4 gal (28 L) gasoline
219lb
Dry weight
30.3 × 25.0 × 27.0 in
L × W × H
- Handle
- Lockable cantilevered handle
- Wheels
- 8 × 2 in wheels
- Shipping weight
- 225 lb
- Extended length
- 45.7 in
Start
Electric, remote, recoil
Engine
457cc Cummins Onan OHV 4-stroke
Power quality
≤3% THD · inverter
Safety
Low-oil shutdown · CO shutdown
1 duplex GFCI 120V 20A (5-20R) · 1 × 120/240V 30A L14-30R · 1 × 120/240V 50A 14-50R · 2 × USB-A 5V 2.1A
Complete specifications
Every useful detail we could verify.
Specifications were compiled from Cummins’ current North American product page and official model spec sheet. Always verify the current manual and exact part number before purchase.
Electrical output
- Gasoline output
- 9,000W running / 11,000W peak · 75A @ 120V / 37.5A @ 240V running · 91.6A @ 120V / 45.8A @ 240V peak
- Propane output
- 8,100W running / 10,000W peak · 67.5A @ 120V / 33.8A @ 240V running · 83.3A @ 120V / 41.6A @ 240V peak
- Natural gas output
- 7,200W running / 8,800W peak · 60A @ 120V / 30A @ 240V running · 73.3A @ 120V / 36.6A @ 240V peak
- Voltage / frequency
- 120/240V · 60 Hz
- Power quality
- Built-in inverter · ≤3% THD
- Parallel capable
- Yes
Engine, fuel & runtime
- Engine
- 457cc Cummins Onan OHV 4-stroke · Variable
- Starting system
- Electric, remote, recoil · 98 ft (30 m) remote range
- Fuel tank
- 7.4 gal (28 L) gasoline
- Gas · 25% load
- 16.5 hours
- Propane · 25% load
- 6.7 hours
- Oil
- SAE 10W-30 · 1.16 qt / 1.1 L
- Altitude
- Carburetor and fuel-switch kits required above 2,000 ft
- Sound
- As low as 64 dBA
Connections, safety & portability
- AC outlets
- 1 duplex GFCI 120V 20A (5-20R) · 1 × 120/240V 30A L14-30R · 1 × 120/240V 50A 14-50R
- USB / DC
- 2 × USB-A 5V 2.1A
- Grounding
- Bonded neutral
- Transfer-switch ready
- Yes
- GFCI outlets
- Yes
- Protection
- Automatic low-oil shutdown · Automatic CO shutdown · Circuit-breaker overload protection
- Display
- Digital: runtime, power, voltage, frequency, fuel, lifetime hours
- Dimensions
- 30.3 × 25.0 × 27.0 in
- Weight
- 219 lb dry / 225 lb shipping
- Mobility
- Lockable cantilevered handle · 8 × 2 in wheels
Ownership details
- Part number
- A078C500
- Availability
- United States; not for sale in California
- Certification
- EPA
- Emissions
- EPA
- Spark arrestor
- Yes
- Residential warranty
- 3-year limited
- Commercial warranty
- 1 year
Best-fit uses
- Home emergency backup
- Large RV air conditioners
- Large power tools
- High-wattage appliances
Standout features
- Three selectable fuels
- Low-THD 120/240V inverter output
- Automatic CO shutdown
- 50A outlet and transfer-switch readiness
Compatible accessories listed by Cummins
Natural-gas hose kit · Power-distribution cord · Transfer-switch cord · High-altitude kits · Parallel kit · Maintenance kit · Storage and running covers
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