Step-by-Step Methods to Size Solar InverterStep 1: Determine the Total Power Rating of the PV Array . Step 2: The Various Solar Inverter Sizing Ratios . Step 3: Match the Inverter Voltage to the Solar Array . Step 4: Determine the Right Number of Strings Per Inverter . Step 5: Select Among String, Microinverter, or Power Optimizers .
[pdf] Disconnect the AC and DC switchesInspect your system to check if it has a disconnect switch. If not, place a reflecting or opaque surface over the solar panels.Verify that the voltage is zero by using a voltmeter or multimeter.Unplug the wires. This is simple using MC4 connectors, or you may use a socket wrench.If necessary, take out the bolts and clamping mechanisms.
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