No. The 20kW model is rated for 20kW continuous output, while the higher peak figure provides short-duration reserve for startup-heavy loads. SRNE lists up to 2× peak output, which can help pumps, compressors and other motors start without forcing the continuous inverter rating to equal the highest transient demand. A 20kW inverter should therefore be selected from the normal load schedule first, then checked against the startup current and duration of the largest motor or group of motors.
