Generator Parts

Two-wire start is a feature that allows a generator to be started using a non-Generac switch. This feature requires purchasing and installing a kit, and also programming the controller.

Generac offers a wide range of generator accessories for portable, air-cooled home standby, and residential liquid-cooled units to enhance performance, reliability, and convenience. Accessories include maintenance kits, cold weather kits, oil and battery warmers, transfer switches, power inlet boxes, cords, plugs, Mobile Link connectivity...

Replacement keys to unlock generator doors vary by generator type and when it was manufactured. Keys for generator housings can be purchased online by searching the part numbers listed in this article.

The T1 circuit in Generac automatic transfer switches provides 120VAC power to keep the generator’s battery charged. In single-phase models, this circuit includes a fused T1 connection located inside the ATS and should only be serviced by trained personnel. Three-phase transfer switches do not have a T1 fuse and instead require a...

This article explains how Generac home standby generators (10–28 kW air-cooled with Power Zone 200, Evolution/Evolution 2, or Nexus controls, plus some liquid-cooled models) keep the starting battery charged using the built-in charger and the 120 VAC T1 charging circuit. It covers normal, temperature-compensated charging voltage and the...

Generac home standby generator enclosures: since 2016, all Guardian and Next Generation Series models use durable, rustproof aluminum—ideal for coastal or high-humidity areas. Steel enclosures were discontinued except on the 7.5kW PowerPact (1-year rust warranty). Customers may search “rustproof generator,” “aluminum vs steel enclosure,”...

The breaker that is pre-installed on a generator is sized for the unit's output capabilities. Replacing a breaker with a larger breaker will not yield any more output of the unit, and would allow the unit to be easily overloaded. This modification would also void the unit's warranty.

This article explains the key features of Generac air-cooled home standby generator enclosures, which protect the generator from weather, debris, and corrosion while reducing noise. It covers both the Next Generation (10–28 kW) and Guardian (10–26 kW) Series models, detailing their aluminum construction, sound-attenuated,...

This article explains that Guardian series generators manufactured in 2016 and later—and all Next Generation series units—include a factory-integrated sediment trap. The built-in trap prevents debris from entering the fuel regulator and engine, ensures every unit has a correctly constructed trap, and removes the need for installers to...

Generac's home standby generators use a demand-type fuel regulator. A demand regulator provides fuel as the engine demands it based on the engine's load. It does not adjust the fuel pressure being provided to it.