The capacity of a solar panel to produce energy is measured in watts which is calculated by multiplying a solar panel s voltage by the amps of current it produces when a solar installer builds a solar energy system they need to find the right balance of voltage and amps to ensure that the system performs well.
Connecting solar panels in series and parallel.
Solar panels are wired in series when you connect the positive terminal of one panel to the negative terminal of another.
This is usually used with 12v set ups.
Connecting your solar panel in series vs parallel affects current flow and is dictated by your installation s setup.
Solar panels are connected in parallel to obtain higher output current.
How to set up your system in series parallel.
The series connection is done by wiring the positive terminal of each panel to the negative terminal of the next panel a connection similar to the ones of the christmas lights until the final panel is connected to the charge controller or inverter.
Should you connect a 3a solar panel to a 3 5a solar panel the all round current will probably be pulled down to 3a.
When doing a series parallel connection you are essentially paralleling 2 or more equal strings.
Every time you group panels together in series whether is 2 4 10 100 etc.
This kind of a lowering of current would of course cause a loss of power output and eventually loss in equipment efficiency.
Connecting solar panels in series.
When solar panels are wired in series the voltage of the panels adds together but the amperage remains the same.
Comparing solar panels in series vs.
Now lets look at connecting solar panels in parallel.
Connecting more than one solar panel in series in parallel or in a mixed mode is an effective and easy way not only to build a cost effective solar panel system but also helps us add more solar panels in the future to meet our increasing daily needs for electricity.
When you connect two or more solar panels like this it becomes a pv source circuit.
This is called a string.
So when connecting solar panels in series always try to keep the electrical properties of the solar panels identical to get the full benefit of the solar array.
While we re not going to get too deep into the details the difference between connecting solar panels in series vs in parallel is an intermediate level solar discussion.