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| Specification | Generac #8063 GP9500ETF | Cat RP6500 E |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Tri-Fuel | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 9500 W | 6500 W |
| Starting watts | Winner: Winner: 12500 W | 8125 W |
| Noise (lower limit) | 0 dB | 0 dB |
| Weight | 219 lbs | Winner: Winner: 202 lbs |
| Run time @50% load | 9.5 h | Winner: Winner: 12 h |
| Run time @25% load | 14 h | Not available |
| Fuel tank | 7.5 gal | 7.9 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 27.5 x 27.1 x 27.6 | 32.9 x 27.4 x 24.7 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | Not available |
| Engine | ||
| Engine | OHV 4-stroke | 420 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 9500 W | 6500 W |
| Starting watts | 12500 W | 8125 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 | 9.5 h | 12 h |
| Run time @25% load | 14 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | 7000 W | Not available |
| Starting watts | 9000 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 | 8550 W | Not available |
| Starting watts | 11250 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 | 4.5 h | Not available |
| Run time @25% load | 6 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 696471104523 | 815683020067 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 9500 | 6500 |
| Running Watts (Propane) | 8550 | Not available |
| Running Watts (Natural Gas) | 7000 | Not available |
| Starting Watts (Gasoline) | 12500 | 8125 |
| Starting Watts (Propane) | 11250 | Not available |
| Starting Watts (Natural Gas) | 9000 | Not available |
| Runtime @ 50% Load (Gasoline) | 9.5 | 12 |
| Runtime @ 50% Load (Propane) | 4.5 | Not available |
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| Runtime @ 25% Load (Propane) | 6 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 400 | 420 |
| Engine Oil Type | 10W-30 / SAE 30 | SAE 30 or 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 14 | Not available |
| Runtime @ 50% Load (Gasoline) | 9.5 | 12 |
| Runtime @ 50% Load (Propane) | 4.5 | 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 | ||
| Mobility Components | Yes | Not available |
| Starting Components | Recoil, Electric | Recoil, Electric |
| Fuel Connection Components | propane hose | Not available |
| Included Accessories | Oil, propane hose, battery, and wheel kit | Oil, funnel, tool kit, battery, and wheel kit |
| Warranty & identification | ||
| Residential Warranty | 3 | Not available |
| Part Number | Not available | 502-3688 |
| Additional specs | ||
| Summary | The Generac GP9500ETF is a 9,500-watt tri-fuel generator built for whole-house backup and job site power. Its ability to run on gasoline, propane, or natural gas means users gain real fuel flexibility when one source becomes scarce during extended outages. The 12,500 starting watts provide enough surge capacity to handle motor-driven loads like well pumps and air handler fans without tripping breakers. This is a stationary workhorse, not a portable unit. | The Cat RP6500 E is a 6500-watt gasoline generator built for residential backup and light commercial work. Its 8125-watt peak capacity means it can start large tools and appliances that draw high inrush current, then sustain 6500 watts of continuous power for multiple devices simultaneously. A 7.9-gallon fuel tank delivers 12 hours of runtime at 50% load, which translates to roughly one full workday or overnight backup without refueling. The gasoline engine is straightforward to maintain and refuel anywhere, making this unit practical for job sites, outdoor events, and emergency home power. |