Wiring Diagram

April 2017
Connecting Multiple PV Modules to SolarEdge Power Optimizers
Connecting multiple PV modules to SolarEdge power optimizers (in series or in parallel) is allowed, as long as:
All modules are of the same type
The cumulative module power does not exceed the power optimizer rated input DC power
The maximum input voltage (V
oc
) at lowest temperature does not exceed the absolute maximum input voltage of the
power optimizer (refer to the power optimizer datasheet to determine the absolute maximum input voltage). If connecting
multiple modules in series, the cumulative voltage should be used.
NOTE
Connection of high voltage PV modules in series to SolarEdge power optimizers may result in a cumulative open
circuit voltage that will exceed the maximum input voltage and may potentially damage power optimizers.
The maximum input current does not exceed the maximum input short circuit current of the power optimizer (refer to the
power optimizer datasheet to determine the maximum input short circuit current). If connecting multiple modules in
parallel, the cumulative current should be used.
NOTE
Connection of PV modules with high short circuit current in parallel to SolarEdge power optimizers may result in a
cumulative current that will exceed the maximum input current and may potentially damage power optimizers.
The SolarEdge Site Designer can be used to check the compatibility of the modules with the different power optimizers. The Site
Designer can be downloaded at the following link: http://www.solaredge.com/groups/installer-tools/site-designer.
Figure 1: Serial and parallel connection of multiple PV modules to a power optimizer
NOTE
Power optimizers P405 and P800p have dual input for the connection of two modules in parallel.
For all other power optimizers use branch cables to connect multiple modules in parallel to the input of the power
optimizer.You can purchase branch cables from SolarEdge; for additional details refer to the branch cable datasheet in
the following link: http://www.solaredge.com/files/pdfs/products/power-optimizers/se_branch_cables_datasheet.pdf.