GENERAC 7077 Guardian 3-Phase 20kW Home Backup Generator WiFi-Enabled

No. The 7077 Guardian is a 3-phase 20/17kW standby unit, and a 3-phase generator needs a 3-phase service to feed. Most houses and small strip-retail spaces are single phase, so this is the wrong unit there. It fits a small commercial building that already has 3-phase power coming in. The nameplate voltage is 240V and the current range is 81.3 to 91.7 A, so your transfer switch and feeders have to be sized for that.

Plan the pad around a footprint of 48 inches long by 25 inches wide, with the enclosure standing 29 inches tall. It weighs 448 lbs on its own and 476 lbs assembled, so a poured concrete pad or a composite generator pad rated for that load is what you want, plus whatever clearance your local code requires from windows and openings.

Size to the generator's output current, which runs 81.3 to 91.7 A at 240V depending on fuel and load. That puts you into a 100 A class 3-phase transfer switch, not a 60 A. Match the switch poles to the 3-phase service, and confirm the switch is rated for the same voltage before you order.

UL Listed and CSA Certified, both. That covers the permit and inspection path for a commercial standby install in the US and Canada, which is usually the first thing a facilities or institutional buyer needs on paper before the electrician mobilizes.

Yes. True Power Technology holds total harmonic distortion under 5 percent, which is the threshold that matters for switching power supplies, VFDs, POS gear and other sensitive electronics. That is why this unit gets specified for small business backup rather than a contractor-grade portable.

The enclosure is all aluminum with Generac's RhinoCoat powder-coated finish, so there is no steel skin to rust through in a salt-air or de-icing environment. The frame material is aluminum and the finish color is bisque.

The 7077 is WiFi-enabled, so a property manager running multiple sites can watch it without a truck roll. At the unit itself, the Evolution controller has a multilingual LCD that shows battery status and tracks maintenance intervals, which is what tells you whether a monthly exercise cycle actually ran.

Those are the two fuel ratings, standard on Generac standby units: the higher figure is on natural gas or LP depending on the model, the lower on the other. Size the load to 17kW if you want the unit to carry the building on either supply. The corresponding output current spread is 81.3 to 91.7 A. The catalog also lists a 22000 rated wattage figure for the unit.

Country of origin is the United States. Generac states its generators and engines are engineered and built in the USA using domestic and foreign parts, which is the wording your compliance reviewer will want to see verbatim on a federally funded project.

It runs Generac's G-Force engine, a purpose-built, pressure-lubricated design intended for generator duty rather than an adapted lawn-equipment engine. Pressure lubrication is the part that matters for long run hours during an extended outage, and Generac cites it as the reason for reduced routine maintenance.

A Prop 65 warning applies to operation and service: engine exhaust, carbon monoxide, phthalates and lead. It is exposure from running and servicing the engine, not a birth-defect chemical contained in the product itself, which the record marks as No. Service it in a ventilated area and wear gloves. Full detail at www.P65Warnings.ca.gov.

The manufacturer part number is 7077, sold as a single model with no finish or voltage options to select. Order it as Generac Guardian 7077, 20/17kW 3-phase. There are no shipping restrictions flagged on the item.