Me -
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Originally Posted by cfg83
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Question: How much solar panel square footage is needed to generate 12 volts DC at 1.5 Amps?!?!?!?!
CarloSW2
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All About Solar Power - The Future is Solar
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These two (amps and volts) can be combined together to say how much energy or power is involved. This is measured in watts. They combine using the equation:
Watts = Amps x Volts.
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As all are giving producing a nominal 12 volts - using the equation above and assuming a bright (not necessarily sunny) day:
the 10 watt panel gives out just under 1 amp,
the 20 watt, gives out just over 1.5 amps
the 30 watt gives out exactly 2.5 amps.
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Here is a 20 watt Solar Panel for $180,
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20 Watt Framed Solar Panel
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Our new high quality and economically priced 20 watt framed solar panel is perfect for charging batteries or other small solar applications. Includes brackets for flat mounting.
Specs:
Rated power: 20 watts
Nominal voltage: 12 Volt
Peak voltage (Vmp):17.5 Volt
Peak current (Imp): 1.2 Amp
Dimensions: 360 x 530 x 17 mm, 14 x 20 x 0.7 inch
Weight: 2.5 Kg, 6 Lb.
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The price is high, but at least the size is mangeable.
CarloSW2