3
Connecting Cables
3.1
Preparing Cables
•
Connect cables in accordance with the local installation laws and regulations.
•
Before connecting cables, ensure that the DC switch of the solar inverter and all the switches
connected to it are set to OFF. Otherwise, the high voltage produced by the solar inverter may
cause electric shocks.
Prepare cables based on site requirements.
No.
Cable
Protective earthing
1
(PE) cable
AC output power
2
cable
DC input power
cable and
3
(optional) battery
cable
(Optional) Signal
4
cable
3.2
Installing the PE Cable
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks may
occur.
•
The PE point at the AC output port is used only as a PE equipotential point, and cannot
substitute for the PE point on the enclosure.
•
It is recommended that silica gel or paint be applied around the ground terminal after the PE
cable is connected.
•
It is recommended that the right ground point be used for grounding. The other ground point is
reserved.
Type
Single-core outdoor
copper cable
Two-core (L and N) or
three-core (L, N, and
PE) outdoor copper
cable
Standard outdoor PV
cable in the industry
(recommended model:
PV1-F)
Outdoor shielded twisted
pair cable
Conductor Cross-
Sectional Area Range
2
4–10 mm
2
4–6 mm
2
4–6 mm
When cables are
crimped: 0.20–0.35
2
mm
When cables are not
crimped: 0.20–1 mm
Ground
point
4
Outer Diameter
N/A
10–21 mm
4.5–7.8 mm
four-hole rubber
plug: 4–8 mm
two-hole rubber
plug: 8–11 mm
2