User Manual
6 Electrical Connection
41
6.4.2 PV Connection Procedures
Conduit entries for all versions are located on the bottom and both side of the
combiner unit
Make sure the appropriate conduit hub is used in order to maintain required
spacing between wiring groups and ensure the integrity of the NEMA 4X
environmental rating.
DC Cable Requirements
Use only Copper (Cu) wire rated for 90°C (194°F), solid or with type B or type C
stranding (19 strands maximum). For conductors with finer stranding, a suitable UL
listed wire ferrule must be used.
Cross-section
Area Range
Max. Withstand Voltage
Max. input current for
each PV string
3.33...16.0mm
2
12AWG…6AWG
1000V 12A
The input current of each input channel should be less than 10A, otherwise
the fuse may blow out.
DC Cable Connection Procedures
Make sure that all the DC and AC cables to the inverter are not live before
you start the electrical work.
Step 1
Strip off 12mm insulation layer from
all DC cables.
Step 2
Make sure the connection cable of PV string for the correct polarity.
The inverter will not function properly if the DC polarities are reversed.
