12
PV Wire Size
Since the PV output current varies with the PV module's size, connection method, or
sunlight angle, the minimum wire size can be calculated by the PV I
sc
. Please refer
to the value of I
sc
in the PV module specification. When PV modules are connected in
series, the I
sc
equals each PV module's I
sc
. When PV modules are connected in
parallel, the I
sc
equals the sum I
sc
of the PV modules. The I
sc
of the PV array must not
exceed the controller's maximum PV input current. Please refer to the table below:
NOTE: All PV modules in a given array are assumed to be identical.
I
sc
=Short circuit current (amps) V
oc
= Open circuit voltage
When the PV modules are connected in series, the open-circuit
voltage of the PV array must not exceed
46V(DR**06N-DDB/DDS),92V
(DR**10N-DDB/DDS).
Battery and load wire size
The battery and load wire size must conform to the rated current. The reference size
is as below:
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