Inverter Nominal Output Power 4000W AC Output Voltage 120/240 AC Output Voltage Range 106/211 AC to 132/254 AC AC Frequency 60 Hz AC Frequency Range 59.4 to 60.4 +/-0.05 Hz Max Output Current L-N 25.0A L-L 16.7A MPPT Voltage Range 20 to 32 DC DC Voltage Range 20 to 32 DC Max Input Current 220A Max Inverter Efficiency 94 Percent CEC Efficiency 91 Percent Total Harmonic Distortion 5 Percent Power Factor 0.98 Enclosure Type Steel Vented Compliance NEMA1