Solar voltage drop calculations, new question
Using a calculator: I like this one When figuring wire size from panels to controller for "12v" panels in parallel and PWM controller, we should use 20v as our input, right??? I see writeups wher...
Forum Discussion
Voltage drop is a function of current and wire impedance. If you have a current to the battery of 1.5 amps for example, the voltage drop for a given wire size will be the same regardless of the controller output voltage. It's the old V=IxR equation. So if you are calculating the voltage drop, forget the starting voltage. Just measure the amps, find the R value in a table and multiply.
Before I get blasted, note that I am talking about voltage drop through the wire, not the endpoint/battery voltage.
Before I get blasted, note that I am talking about voltage drop through the wire, not the endpoint/battery voltage.
