Understanding inverter startup voltage. | DIY Solar Power Forum
The inherent diode forward voltage is temperature dependent and is lower as cell heats up. Panels are typically 36, 60, or 72 cells in series, for a Voc of about 36 x 0.63v = 22.7v, 60x 0.63v = 37.8v, 72 x 0.63v = 45.4v, respectively. Vmp is typically 81% to 85% of the Voc panel voltage.
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