GENERAC 20KW 3-PHASE COMMERCIAL
Model 7077 — 20,000W of automatic backup power in three-phase configuration for commercial and large-scale properties.
About the Generac 20kW 3-Phase
The Generac 20kW 3-Phase Standby Generator is purpose-built for properties with three-phase electrical service — commercial buildings, large workshops, industrial properties, and select residential estates. Unlike single-phase generators that power standard home circuits, this unit delivers balanced 3-phase power required by commercial HVAC systems, industrial motors, commercial kitchen equipment, and three-phase electrical panels. The G-Force 1000 engine provides 20,000 watts of reliable 3-phase power on natural gas, with the same WiFi monitoring, automatic operation, and Evolution controller as Generac's residential lineup.
Why choose the 20kW 3-Phase? Choose the 20kW 3-Phase if your property has three-phase electrical service — which is common in commercial buildings, large workshops, restaurants, medical offices, and some older or larger residential properties in Southwest Florida. If your main electrical panel has three hot wires (instead of the standard two), you need a 3-phase generator. This is the only air-cooled 3-phase standby generator Generac offers in this power class, making it the go-to solution for small commercial backup power without stepping up to a much larger and more expensive liquid-cooled industrial unit.
What is 3-Phase Power?
Three-phase power delivers electricity through three separate conductors, each carrying alternating current offset by 120 degrees. This creates a smoother, more constant power delivery than single-phase — which is why it's the standard for commercial buildings, industrial equipment, and large motors.
Do you need 3-phase? Check your main electrical panel. If you see three hot wires (typically red, black, and blue) instead of the standard two, you have 3-phase service. Commercial properties, restaurants, medical offices, large workshops, and some older or larger residential properties in Southwest Florida commonly have 3-phase power. A standard single-phase generator CANNOT power a 3-phase panel — you need a 3-phase generator like this 20kW unit.
Common 3-phase loads: Commercial HVAC rooftop units, industrial compressors, commercial kitchen equipment (walk-in coolers, large ovens), welding equipment, CNC machines, elevator motors, and large water pumps.
Technical Specifications
| Model Number | 7077 |
| Series | Generac Home Standby |
| Phase | 3-Phase |
| Running Watts (NG) | 20,000W |
| Running Watts (LP) | N/A (3-Phase) |
| Fuel Type | Natural Gas or Liquid Propane (Dual Fuel) |
| Engine | Generac G-Force 1000 (999cc) |
| Controller | Evolution with Multilingual LCD Display |
| Weight | 466 lbs |
| Dimensions | 50.8" L x 27.2" W x 31.4" H |
| Oil Capacity | 1.9 qt |
| Battery | Group 26R 540 CCA / Group 35 AGM 650 CCA |
| Enclosure | Corrosion-Resistant Aluminum |
| WiFi Monitoring | Mobile Link (FREE) |
| Warranty | 5-Year Limited (7-Year Extended Available) |
Key Features
Mobile Link WiFi Monitoring
Monitor your generator from anywhere using your smartphone, tablet, or computer. Get real-time alerts for power outages, maintenance reminders, and system status — all free with every Generac home standby generator.
True Power Technology
Delivers clean, smooth power with less than 5% total harmonic distortion. Safe for sensitive electronics like computers, TVs, and smart home systems.
Quiet-Test Self-Test Mode
Weekly self-test runs at a lower, quieter RPM so it won't disturb your family or neighbors.
Evolution Controller
Multilingual LCD display shows real-time status, maintenance alerts, and operating data right at the unit.
G-Force Engine
Generac's purpose-built, pressure-lubricated engine designed specifically for generator use — thousands of hours of reliable operation.
Corrosion-Resistant Aluminum Enclosure
Tough aluminum enclosure stands up to Southwest Florida's salt air, humidity, and coastal conditions.
Peace of Mind in Southwest Florida
For commercial property owners in Southwest Florida, losing power means losing revenue. Every hour without electricity costs money — spoiled inventory, cancelled appointments, lost productivity, and unhappy tenants. The 20kW 3-Phase generator keeps your business running through hurricanes, thunderstorms, and utility failures.
This generator sits outside your building, connected to your 3-phase electrical panel and fuel supply. When it detects a power outage, it starts automatically and restores power within seconds — no employee needed on-site, no manual startup, no interruption to critical equipment.
Ready to Protect Your Business?
Furnace Direct is a licensed Generac dealer serving Cape Coral, Fort Myers, and all of Southwest Florida.
Call us today for a free consultation and quote.