GenMax GM3300i
3000 W, gasoline
Firman W03083
Generator · Whisper Series. Specs from the manufacturer page (checked ).
The Firman W03083 is a gasoline inverter generator with 3000 W running output and 3300 W starting output at 120 volts. It has a 171cc engine, a 1.8-gallon fuel tank, and up to 9 hours of run time at 25% load.
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Running
3000W
Peak / surge
3300W
Fuel
gasoline
Noise
58dB
Weight
40.8kg
Warranty
3yr
Key features
- 171cc engine with recoil start, electric start, and remote start
- Low oil shut-off and cast iron sleeve
- Eco mode varies engine speed with load for maximum fuel efficiency
- Outlets: one 5-20R 120V 20A duplex, one TT-30R 120V 30A twistlock (25A/120V/3000W), one USB-A (2.1A/5V DC/10W), one 12V DC power port (8.3A/12V DC/100W)
- Covered outlets on a multi-featured control panel
- 3-year warranty
Specifications
| Running watts | 3000 W |
|---|---|
| Peak / surge | 3300 W |
| Fuel | gasoline |
| Tank | 6.8 L (1.8 gal) |
| Noise | 58 dB |
| AC output voltage | 120V |
| Weight | 40.8 kg (89.9 lb) |
| Warranty | 3 years |
From the Firman page. Values the manufacturer does not publish are left out.
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Connection and wiring
Follow the diagrams in the Firman manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
Open the Firman manual (PDF) →
Error codes and troubleshooting
| Code | Meaning | What to do | Manual page |
|---|---|---|---|
| Circuit Breakers | The receptacles are protected by an AC circuit protector that trips if the generator is overloaded or an external short circuit occurs. | Disconnect all electrical loads and determine the cause before using the generator again. If overloading caused the trip, reduce the load. Reset by pressing the protector button. Continuous tripping may damage the generator or equipment. | 8 |
| Oil Warning Indicator Light | Indicates the oil has fallen below the minimum level. The engine stops automatically and will not start until the proper amount of oil is in the crankcase. | Check the oil level when this light turns on. Add the proper amount of engine oil to the crankcase before attempting to start the engine. | 8 |
| Overload Indicator Light | Connected devices have exceeded the generator's wattage or amperage capacity, or a power surge occurred. The AC Power light goes off, the engine keeps running, and power to the receptacles is cut. | Keep the total power drawn from all receptacles within the nameplate rating. | 8 |
| Circuit Breaker | The receptacles are protected by an AC circuit protector that trips if the generator is overloaded or an external short circuit occurs. | Disconnect all electrical loads and find the cause before using the generator again. If overloading caused the trip, reduce the load. Reset by pressing the button on the protector. Continuous tripping may damage the generator or equipment. | 9 |
| Output Ready | Stays on during normal operation. Turns off when the generator is overloaded. | — | 9 |
| AC Reset | The inverter has entered a protective state and AC output is interrupted. | Press the AC Reset Button to restore the output. | 12 |
6 of 13 codes. From the Firman manual. All 13 WH03242 / T09371 / H07553 / W03083 codes →
FAQ
Can the Firman W03083 start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 3300 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.