User Manual
30
A
Inverter
B
C
1
3
4
2
D
Item
Designation
A
PV string
B
Grid
C
Monitoring device
D
AC circuit breaker
Tab. 5-1
Cable requirements
No.
Cable
Type
Specification
Outer
diameter
(mm)
Cross section
(mm
2
)
1
DC cable
PV cable complying
with 1,500V
standard
6~9
4~6
2
Additional
Grounding
cable
Outdoor single-core
copper wire cable
/
The same as that
of the PE wire in
the AC cable
3
AC cable
Outdoor multi-core
copper or aluminium
cable (Copper and
aluminium adapter
terminals are
required when using
aluminium cable)
20~50
L1,L2,L3,Nwire(S
G33CX): 16~35
L1,L2,L3,Nwire(S
G40CX): 25~50
L1,L2,L3,N
wire(SG50CX):
35~70
PE wire: refer to
Tab. 5-2
4
Communic
ation cable
Shielded twisted pair
(terminal block)
4.5~18
1~1.5
CAT-5
Ethernet
cable (RJ45)
/
