10
exceed three times of rated charge power, When the PV array reverse polarity, the
actual operation must NOT exceed 1.5 times. For real application please refer to the
table below:
Max. PV open
circuit voltage
①At minimum operating environment temperature
②At 25℃ environment temperature
2.3 Wire Size
The wiring and installation methods must conform to all national and local electrical
code requirements.
PV Wire Size
Since PV array output can vary due to the PV module size, connection method or
sunlight angle, the minimum wire size can be calculated by the I
SC
of PV array.
Please refer to the value of I
SC
in PV module specification. When the PV modules
connect in series, the I
SC
is equal to the PV module‘s I
SC
. When the PV modules
connect in parallel, the I
SC
is equal to the sum of PV module‘s I
SC
. The I
SC
of PV array
must not exceed the maximum PV input current, please refer to the table as below:
Max. PV wire size (mm
2
/AWG)
NOTE: When the PV modules connect in series, the open circuit voltage of the PV
array must not exceed 138V (25℃).
Battery and Load Wire Size
The battery and load wire size must conform to the rated current, the reference size
as below:
Battery wire
size
(mm
2
/AWG)
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