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  • Wire Size Calculators and "Load Amps"

    When using most DC voltage drop calculators on the web, they generally ask for wire gauge, voltage, circuit length, load amps, and desired acceptable loss percentage (seems to default to 3% in most cases). Is "load amps" in these calculators referring to the amperage of the solar panel, the charge controller, or the highest amperage draw you can pull with whatever size inverter you have (or something else)?

    Also, a 100 watt panel I saw says 18.9 volts and 5.29 amps for its output. Is that the *maximum* amperage it can output regardless of sun/cloud conditions? If it's cloudy out and the panel produces a lower voltage, does that change the amperage calculation or does the panel also output lower wattage so it the amperage doesn't necessarily increase due to lower voltage.

    Thanks!
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