This Onan 20ES 20kW generator is a versatile, heavy-duty unit that's ideal for residential, commercial, or backup use. 🔹 Fuel Type: Runs on natural gas or propane 🔹 Phases: Configurable for both single-phase and three-phase 🔹 Voltage Range: Supports 110V to 430V 🔹 Runtime: Only ~4,900 hours – very low for its class 🔹 Condition: Very well maintained and fully operational This generator has been kept in great shape and offers reliable performance with flexible configuration options to meet a variety of power needs.