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  • Re: 3 panels in parallel

    Most (all?) good quality solar panels have bypass diodes already wired in the panel.... More or less, solar cells go "high resistance" when they are shaded and block current flow. And, if t…
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  • Re: 3 panels in parallel

    Yes, the diode will block reverse current flow. However, diodes can fail sorted or open. The powers that be, require that two diodes be used in series to protect against a single point of failure. Or…
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  • Re: I000 watt partially off-grid system

    OK, going with some math to size the system... 2x 240 Watt panels. We recommend 5% to 13% typical rate of charge for lead acid batteries... 5% is for weekend/seasonal systems. 10%+ for full time off …
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  • Re: I000 watt partially off-grid system

    The panels in series or parallel--It really does not matter from a high level point of view: * Power = Voltage * Current * P=V*I= 30 volts Vmp * 2x 8 amps Imp = 480 Watts parallel panels (current add…
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  • Re: I000 watt partially off-grid system

    For the direction to face your panels... You can use this link: http://solarelectricityhandbook.com/solar-irradiance.html And try east/west/south west/south east, panel tilt, etc... And see which dir…
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