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| Specification | Cummins Onan P4500i | NorthStar e9250s |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | Yes | No |
| Running watts | 3700 W | Winner: Winner: 7250 W |
| Starting watts | 4500 W | Winner: Winner: 9250 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 74 dB |
| Weight | Winner: Winner: 98 lbs | 277 lbs |
| Run time @50% load | Winner: Winner: 15 h | 10.8 h |
| Run time @25% load | 18 h | Not available |
| Fuel tank | 3.4 gal | 8 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 24.5 x 18.3 x 20.5 | 41 x 32 x 29 |
| Electrical | ||
| Voltage (AC) | 120 | 120/240V 60 Hz |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 3 % | <5% % |
| Engine | ||
| Engine | 224 cc Ducar OHV 4-stroke | NorthStar e420 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil; Electric; Remote | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 4 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3700 W | 7250 W |
| Starting watts | 4500 W | 9250 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | 15 h | 10.8 h |
| Run time @25% load | 18 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | CARB, EPA | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | 690781007925 | 840321737359 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3700 | 7250 |
| Starting Watts (Gasoline) | 4500 | 9250 |
| Runtime @ 50% Load (Gasoline) | 15 | 10.8 |
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | 3x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Ducar OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 224 | 420 |
| Engine Oil Type | 10W30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| Runtime @ 50% Load (Gasoline) | 15 | 10.8 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, and battery | Funnel, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 4 |
| Part Number | A058U955 | Not available |
| Additional specs | ||
| Summary | The Cummins Onan P4500i is a 3700-watt inverter generator built for users who need reliable power without the noise penalty. Its 4500-watt peak capacity handles startup surges for air conditioners, power tools, and RV air conditioning units. The gasoline engine runs clean enough for sensitive electronics like laptops and phones, thanks to a 3 percent THD rating that protects against voltage spikes. This unit bridges the gap between portable camping generators and stationary backup power, making it useful for RV owners, homeowners facing extended outages, and contractors working near occupied spaces. | The NorthStar e9250s is a commercial-grade, portable generator featuring a 420cc OHV EFI engine, delivering 9,250 surge watts and 7,250 rated watts. It boasts Quiet Armor Technology for reduced noise, an electric start with a built-in battery charger, and a multi-function LCD display for monitoring generator functions. |
