| Brand | Generac Power Systems |
| Full Model Code | GP15500EFI (Model 7705-0) |
| Generator Type | Open-Frame Heavy-Duty Conventional Portable Generator |
| Fuel Type | Gasoline Only |
| Running Watts (Continuous) | 15,500 Watts |
| Starting Watts (Surge/Peak) | 19,300 Watts (High Peak Motor Starting Capability) |
| AC Voltage & Frequency | 120V / 240V AC @ 60 Hz |
| Amperage Output (Continuous) | 129 Amps @ 120V | 64.5 Amps @ 240V |
| Phase Configuration | Single Phase Output Tracking |
| Engine Type & Displacement | Generac OHVI V-Twin 816cc Engine with Electronic Fuel Injection (EFI) |
| Engine Starting System | 12V DC Electric Start Ignition System & Recoil Pull Mechanical Backup |
| Alternator Type / Regulation | Heavy-Duty Brush-Type Alternator with TruePower™ Technology (<5% THD) |
| Fuel Tank Capacity | 53.8 Liters (14.2 Gallons) High-Capacity Steel Tank |
| Run Time at 50% Load | Approx. 11.0 Hours on a single full tank of gasoline |
| Control Panel Receptacles | 4x 120V 20A GFCI (5-20R) Covered Outlets, 1x 120V 30A L5-30R Twist-Lock, 1x 120/240V 30A L14-30R Twist-Lock, 1x 120/240V 50A Heavy Duty Outlet (14-50R) |
| Safety Management Systems | COSense® Built-In Carbon Monoxide Sensor with Automated Emergency Shutdown |
| Lubricating Safeguards | Low-Oil Pressure Sensors with Automatic Ignition Kill Interrupt |
| Chassis & Mobility Features | Heavy-Gauge 1.25" Steel Cradle Tube, All-Terrain Wheel Kit & Locking Handles |
| Net Weight | 181.4 kg (400 lbs) Dry Weight | Shipping Weight: 450 lbs |
| Dimensions L x W x H | 1486 mm x 785 mm x 927 mm (58.5" x 30.9" x 36.5") |
| Certifications | EPA Certified / 49-State Emissions Compliant (Not intended for sale in CARB states) |
| Ideal Application | High-capacity manually linked home backfeed setups, jobsite grid infrastructure powering multiple industrial tools, and managing high-amperage motor starting tasks. |