Once we've got that covered, I'll also explain the difference between these two configurations in Voltage (Volts) and Current (Amps) and provide a real-life example.Finally, I'll discuss the pros and cons of each configuration to help you figure out which one fits your needs best. Contact online >>
Once we''ve got that covered, I''ll also explain the difference between these two configurations in Voltage (Volts) and Current (Amps) and provide a real-life example.
Finally, I''ll discuss the pros and cons of each configuration to help you figure out which one fits your needs best.
Let''s dive in.
I get commissions for purchases made through links in this post.How to wire solar panels in series and in parallel?
Every solar panel typically comes with a female and a male MC4 connector. Usually, the female MC4 connector stands for the negative terminal, and the male MC4 connector represents the positive terminal of the solar panel. However, keep in mind that this standard isn''t always consistent.
You can usually find polarity indicators somewhere on the solar panel itself. Look for a "+" sign, which indicates the positive wire, and a "-" sign for the negative wire.
These polarity markers can be located on the junction box, the wires, or the MC4 connectors.
If the manufacturer hasn''t clearly labeled the polarity of the solar panel, another approach is to use a multimeter to measure voltage.
To do this, insert one multimeter probe into each of the MC4 terminals.
As an illustration, for this tutorial, I''ve connected the positive MC4 connector of the left panel to the negative MC4 connector of the right panel since I''m working with only two solar panels.
And voila! we have a string of 2 solar panels:
To hook up the solar panels to the solar charge controller, I simply used the extension cables. I connected the negative end of the string (on the left) to the negative terminal of the SCC and linked the positive end of the string (on the right) to the positive terminal of the charge controller.
To wire solar panels in parallel, you''ll require a couple of branch connectors. These connectors link all the positive terminals of the solar panels, creating the positive terminal of the solar array, and they connect all the negative terminals to form the negative terminal of the solar array.
In the image above, you can see a pair of 2-to-1 (or Y) MC4 branch connectors, since I''m only connecting two solar panels in parallel. However, if you have more solar panels, you''ll require branch connectors with a matching number of inputs.
For instance, if you have three solar panels, you''ll need a pair of 3-to-1 MC4 branch connectors. To wire four solar panels in parallel, use a pair of 4-to-1 MC4 branch connectors.
Read more about fusing solar panels.
After fusing the solar panels, I joined the positive wires using a Female-Female-Male MC4 branch connector and connected the negative wires using a Male-Male-Female MC4 branch connector.
The wire on the left represents the negative end of the solar array. Using the extension cables, it should be connected to the negative PV terminal of the solar charge controller. The wire on the right is the positive wire, which needs to be connected to the positive PV terminal of the charge controller.
Whether you connect solar panels in series or in parallel, the total power output (in Watts) is the sum of the power generated by each solar panel. The difference between these two types of configurations is the total Voltage (Volts) and the total Current (Amps) of the solar array.
When you wire solar panels in series, you raise the Voltage of the system, while the Current stays the same.
Voltage:
Total Voltage (Volts) = Voltage 1 + Voltage 2 + Voltage 3 + Voltage 4
Current:
Total Current (Amps) = Current 1 + Current 2 + Current 3 + Current 4
Total Imp (Maximum Power Current) = Imp 1 + Imp 2 + Imp 3 + Imp 4
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