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| Specification | Cummins Onan P5000iDF EFI | Firman W03082 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | Yes |
| Running watts | Winner: Winner: 3900 W | 3000 W |
| Starting watts | Winner: Winner: 5000 W | 3300 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 58 dB |
| Weight | 108 lbs | Winner: Winner: 90 lbs |
| Run time @50% load | Winner: Winner: 13 h | Not available |
| Run time @25% load | 16.8 h | 9 h |
| Fuel tank | 3.4 gal | 1.8 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 25.1 x 18.1 x 21.2 | 23.2 x 17.8 x 17.9 |
| Electrical | ||
| Voltage (AC) | 120 | 120V 60 Hz |
| Voltage (DC) | 5 | 12V |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 3 % | <3% % |
| Engine | ||
| Engine | 224 cc OHV 4-stroke | 171 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3900 W | 3000 W |
| Starting watts | 5000 W | 3300 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 | 13 h | Not available |
| Run time @25% load | 16.8 h | 9 h |
| Propane | Not available | Not available |
| Running watts | 3500 W | Not available |
| Starting watts | 4500 W | Not available |
| 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 | Not available | Not available |
| Run time @25% load | 20 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | Not available | 840876130827 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3900 | 3000 |
| Running Watts (Propane) | 3500 | Not available |
| Starting Watts (Gasoline) | 5000 | 3300 |
| Starting Watts (Propane) | 4500 | Not available |
| Runtime @ 50% Load (Gasoline) | 13 | Not available |
| Runtime @ 25% Load (Gasoline) | 16.8 | 9 |
| Runtime @ 25% Load (Propane) | 20 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 224 cc OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 224 | 171 |
| Cylinder Sleeve | Not available | Cast iron sleeve |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 16.8 | 9 |
| Runtime @ 50% Load (Gasoline) | 13 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection; CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Included Accessories | Not available | Oil, funnel, tool kit, battery charger, battery charging cables, and battery |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Part Number | A075C500 | Not available |
| Additional specs | ||
| Summary | The Cummins Onan P5000iDF EFI is a 3900-watt dual-fuel inverter generator built for RV owners, campers, and homeowners who need reliable portable power without excessive noise. Its 5000-watt peak capacity handles startup demands of air conditioners, power tools, and multiple appliances simultaneously. The dual-fuel design means you can run gasoline when convenient and switch to propane for longer storage life or when gasoline is unavailable. At 52 dBA, this unit operates as quietly as normal conversation, making it suitable for campgrounds and residential neighborhoods where noise restrictions apply. The inverter technology produces clean power with only 3 percent THD, protecting laptops, smartphones, and sensitive electronics from voltage spikes that damage circuits. | The Firman W03082 is a 3000-watt inverter generator built around a 171cc OHV 4-stroke engine. At this wattage, it can power most household appliances simultaneously: a refrigerator (600W), microwave (1000W), and several lights and chargers without strain. The 3300-watt peak handles motor startup surges for tools like circular saws or air compressors. Because it runs on gasoline with a 1.8-gallon tank, refueling happens frequently at higher loads, but the 9-hour runtime at 25% load means light-duty camping or backup power runs through a full day without interruption. The inverter topology keeps total harmonic distortion below 3%, which means laptops, phones, and sensitive medical equipment charge safely without risk of damage from dirty power. |