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| Specification | Genmax GM10500iETC | Ryobi RY909500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 8500 W | 8000 W |
| Starting watts | Winner: Winner: 10500 W | 9500 W |
| Noise (lower limit) | Winner: Winner: 64 dB | 85 dB |
| Weight | 244.7 lbs | Winner: Winner: 198 lbs |
| Run time @50% load | Not available | Winner: Winner: 7.5 h |
| Run time @25% load | 14 h | Not available |
| Fuel tank | 6.9 gal | 6 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 30.9 x 22.6 x 29.3 | 31 x 29 x 24 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 12 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | ≤3% % | <20% % |
| Engine | ||
| Engine | 458 cc OHV 4-stroke | 500 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil |
| Warranty | ||
| Warranty | 1 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 8500 W | 8000 W |
| Starting watts | 10500 W | 9500 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 | Not available | 7.5 h |
| Run time @25% load | 14 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | 6800 W | Not available |
| Starting watts | 8400 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 | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | 8000 W | Not available |
| Starting watts | 9500 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 | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Bonded to frame |
| UPC | 742332650842 | 46396058553 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 8500 | 8000 |
| Running Watts (Propane) | 8000 | Not available |
| Running Watts (Natural Gas) | 6800 | Not available |
| Starting Watts (Gasoline) | 10500 | 9500 |
| Starting Watts (Propane) | 9500 | Not available |
| Starting Watts (Natural Gas) | 8400 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 7.5 |
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 458 cc OHV 4-stroke | 500 cc OHV 4-stroke |
| Engine Displacement | 458 | 500 |
| Engine Oil Type | SAE 10W/30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 7.5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Not available |
| Included Accessories | Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, RV adapter, cover, neutral bonding plug, and battery | Oil and wheel kit |
| Warranty & identification | ||
| Residential Warranty | 1 | Not available |
| Commercial Warranty | 1 | 3 |
| Additional specs | ||
| Summary | The Genmax GM10500iETC is an 8500-watt tri-fuel inverter generator that runs on gasoline, propane, or natural gas. This wattage handles mid-to-large loads like air conditioning units, power tools, and multiple household appliances simultaneously. The tri-fuel flexibility means users can switch fuels based on availability and cost, a significant advantage for both emergency backup and remote work sites. | The Ryobi RY909500 is a 9500W Portable Gas Generator featuring a 500cc OHV engine, delivering 8000 running watts and 9500 starting watts. It offers a 7.5-hour runtime at 50% load, making it ideal for storm backup and jobsite use. |
