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| Specification | Briggs & Stratton 30742 | Genmax GM9000iE |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | Winner: Winner: 8000 W | 7600 W |
| Starting watts | Winner: Winner: 10000 W | 9000 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 62 dB |
| Weight | 246 lbs | Winner: Winner: 233.7 lbs |
| Run time @50% load | 9 h | Winner: Winner: 10 h |
| Run time @25% load | Not available | 14.5 h |
| Fuel tank | 7.5 gal | 6.9 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 28.4 x 30.5 x 29.1 | 30.9 x 22.6 x 29.3 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | 5 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | ≤3% % |
| Engine | ||
| Engine | Briggs & Stratton OHV 4-stroke | 458 cc Dinking OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 3 years | Not available |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8000 W | 7600 W |
| Starting watts | 10000 W | 9000 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 | 9 h | 10 h |
| Run time @25% load | Not available | 14.5 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Bonded to frame | Bonded to frame |
| UPC | 11675307424 | 798357188662 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8000 | 7600 |
| Starting Watts (Gasoline) | 10000 | 9000 |
| Runtime @ 50% Load (Gasoline) | 9 | 10 |
| Runtime @ 25% Load (Gasoline) | Not available | 14.5 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Briggs & Stratton OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 420 | 458 |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 14.5 |
| Runtime @ 50% Load (Gasoline) | 9 | 10 |
| 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 | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric | Not available |
| Included Accessories | Oil, battery, and wheel kit | Funnel, Tool kit, Key fob, and Battery |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Briggs & Stratton 30742 is an 8,000-watt gasoline generator built for job sites and home backup power. Its 10,000-watt peak output handles motor startup surges, while the dual-voltage 120/240V configuration powers both household circuits and heavy equipment like air compressors or welders. | The Genmax GM9000iE is a 7,600-watt gasoline inverter generator built around a 458cc 4-stroke engine. It delivers 9,000 peak watts for starting large appliances like air conditioners and refrigerators, then sustains 7,600 running watts for simultaneous multi-device operation. The inverter topology keeps total harmonic distortion at 3% or below, protecting laptops, TVs, and other sensitive gear from electrical damage. |
