I wish to solar power a section that uses 12vdc and has a draw of 150ma. To ascertain the solar panel size the company requirements to know the watts/amps it draws per hr/day
Answers: Watts are a measure of power and is derived by multiplying the current contained by amps by the voltage. Thus in this skin 150/1000 amps times 12 equals 1.8 watts, which is 1.8 wH in an hour and 43.2 wH contained by a day. The usual index is the Kilowatt hour so divide by 1000 to get 0.002 KwH within the hour and 0.043 KwH in the year
first
... and to answer your question ...
buy an ma/amp converter :)
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