Author Topic: Comparing current from solar panels {Question} (Read 3934 times)

magnetman12003 · « **on:** August 22, 2016, 04:56:07 AM »

If I had a 5 watt, 10 watt,20 watt, 30 watt, and 50 watt solar panel sitting outside on a non cloudy day pointing at the sun what ""CURRENT"" would I expect to see from each panel?? Each panel putting out 12 volts.

tinman · « **Reply #1 on:** August 22, 2016, 01:09:44 PM »

Quote from: magnetman12003 on August 22, 2016, 04:56:07 AM

If I had a 5 watt, 10 watt,20 watt, 30 watt, and 50 watt solar panel sitting outside on a non cloudy day pointing at the sun what ""CURRENT"" would I expect to see from each panel?? Each panel putting out 12 volts.

5 watt panel at 12v=.41 amps
10 watts panel at 12 volts=.83 amps
20 watt panel at 12 volts=1.66 amps
30 watt panel at 12 volts=2.5 amps
50 watt panel at 12 volt=4.16 amps

That assuming that the panels are exactly as rated,and there is exactly 12 volts across them when loaded.

Brad

magnetman12003 · « **Reply #2 on:** August 22, 2016, 11:15:12 PM »

Quote from: tinman on August 22, 2016, 01:09:44 PM

5 watt panel at 12v=.41 amps
10 watts panel at 12 volts=.83 amps
20 watt panel at 12 volts=1.66 amps
30 watt panel at 12 volts=2.5 amps
50 watt panel at 12 volt=4.16 amps

That assuming that the panels are exactly as rated,and there is exactly 12 volts across them when loaded.

If I was to keep a 12 volt 12 amper hour battery charged and at the same time keep a 12 volt .30 amp miniature fan working day and night which
panel would meet the MINIMUM requirements to do this job As I understand the 12 amp hour battery can keep this particular fan running a very long time by itself.
Brad

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Author Topic: Comparing current from solar panels {Question} (Read 3934 times)

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Comparing current from solar panels {Question}

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