PV Panels

Separate Parts: PV Panels.

Let’s start outside, on the roof usually, with the solar panel(s) called photo-voltaic or PV-panels. Depending on your power needs this will mostly be an array of panels. PV-panels can be connected electrical in multiple ways, parallel, in series or combined. When multiple panels are used, buy all the same, not just size but mostly in electrical specifications. One bad or different panel can result in a lot less total output.

 

The parallel setup:

PV panels in parallel setup

Simply put, a parallel setup means the same output voltage as a single panel but more current depending on the amount of panels. So if there is only need for low-voltage DC, for example LED or halogen lights this could be your setup. Please note that because of the higher current a bigger AWG (American Wire Guage) size wire could be required.

Notes:

  • Use the same panels for the whole setup.
  • This is just an example, can be more panels.
  • During installation cover panels up to prevent electrical shocks.
  • Connect all the positive clamps of the panels together.
  • Connect all the negative clamps of the panels together.
  • A bigger AWG size means a smaller number.

 

The serial setup:

PV panels in serial setup

Simply put, a serial setup means the more output voltage and the same current as one PV panel. The total output voltage depends on the amount of panels. The input voltage of the controller should always correspond to the combined output voltage of the panels.

Notes:

  • Use the same panels for the whole setup.
  • This is just an example, can be more panels.
  • During installation cover panels up to prevent electrical shocks.
  • Connect the positive clamp of a panel to the negative clamp of the next panel.
  • Connect the outer clamps to the controller.

 

The combined setup:

A combined setup, 2 series in parallel.

Simply put, a combined setup means the more output voltage and more output current compared to one PV panel. To combine 2 or more identical grids is very common. The total output voltage depends on the amount of panels in the serial setup. The total current depends on the amount of parallel panels. Please note that because of the higher current a bigger AWG (American Wire Guage) could be required. The input voltage of the controller should always correspond to the total output of the serial combined panels, and both series should also have the same output voltage.

Notes:

  • Use the same panels for the whole setup.
  • This is just an example, can be more panels.
  • During installation cover panels up to prevent electrical shocks.
  • Connect the positive clamp of a panel to the negative clamp of the next panel for each series.
  • Connect the outer clamps of a series to the controller.
  • Put 2 or more series parallel to get more output current.
  • A bigger AWG size means a smaller number.

 

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