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<blockquote data-quote="condor22" data-source="post: 633367" data-attributes="member: 1932"><p>Thought I would add a little info re solar panels and try to keep it simple, however, there is some math involved. I'll also make a note of Watts Law re power.</p><p></p><p>A = amps, V = Volts, W = Watts</p><p></p><p>The equation used is V x A = W and I'll ignore any variables or efficiency crap to keep it simple. The scenario explains 2 different panels and there output in parallel and series connection. I will round the figures to keep it simple, but the effect is similar whatever the figure. There is a Rule re both types of connection.</p><p></p><p>In Parallel connection the A outputs of each panel are added and the lower of the panel V is used.</p><p>In Series connection the V outputs of each panel are added and the lower of the panel A is used.</p><p></p><p>Having said this, I will use the following; 1 x 100W panel, rated at 5A @ 18V and 1 x 200W ppanel, rated at 10A @ 22V. (note, larger panels are often rated with higher V than smaller. These figures are before entering the controller and are nominally for a 12V system, but, the same logic applies to 24V & 48V systems.</p><p></p><p>Next post.........</p></blockquote><p></p>
[QUOTE="condor22, post: 633367, member: 1932"] Thought I would add a little info re solar panels and try to keep it simple, however, there is some math involved. I'll also make a note of Watts Law re power. A = amps, V = Volts, W = Watts The equation used is V x A = W and I'll ignore any variables or efficiency crap to keep it simple. The scenario explains 2 different panels and there output in parallel and series connection. I will round the figures to keep it simple, but the effect is similar whatever the figure. There is a Rule re both types of connection. In Parallel connection the A outputs of each panel are added and the lower of the panel V is used. In Series connection the V outputs of each panel are added and the lower of the panel A is used. Having said this, I will use the following; 1 x 100W panel, rated at 5A @ 18V and 1 x 200W ppanel, rated at 10A @ 22V. (note, larger panels are often rated with higher V than smaller. These figures are before entering the controller and are nominally for a 12V system, but, the same logic applies to 24V & 48V systems. Next post......... [/QUOTE]
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