String PV Grid-tied Inverter PSiO-W3#1100VPVK Series
(100000-125000)
User Manual
3 Installation
37
3.6.2 Requirements for Wire
The wiring terminals are located at the bottom of the inverter (as shown in Figure2-5), The
recommended wires and terminals are as shown in Table3-1.
Table3-1
Wire and terminal requirements
Name
Type
Recommended wire diameter
(
mm
2
)
PV string input wire
1100V and above PV
cables
4~6
AC output wire
Outdoor multi-core
cable or single-core
cable
Outdoor three-core/four-core cable: 70~240 (Max.
outer diameter<56mm);
Outdoor single-core cable: 70~300 (Max. outer
diameter<30mm).
Internal grounding
wire
Outdoor cable
Conductor cross-sectional area
≥
S/2 (S is the
conductor cross-sectional area of AC output wire)
(Max. outer diameter <25mm)
Ethernet
communication wire
8-core network cable
-
RS485
communication wire
Shielded twisted pair
2*0.3 mm
2
(
Maximum outer diameter<14mm
)
External grounding
wire
Outdoor cable
Conductor cross-sectional area
≥
S/2 (S is the
conductor cross-sectional area of AC output wire)
The cables in above table are based on UL copper wire. If other wires are used, please replace
them according to the standard. The wire materials selected by our company have passed the
national standard certification or UL certification.
If the recommended terminal model is not adopted, please confirm with our company.
If using the aluminum wire, it should adopt copper-aluminum transition terminal.
3.6.3 External Grounding Connection