HS2/AS2 Series
35
36
Remove the screw of grounding terminal and secure the additional grounding cable by insert a screw into the
screw hole in the OT/DT terminal. Connect the grounding cables as the following diagram.
Note: A 6-8mm
2
conductor cross-sectional area of cable is recommended for additional grounding cable.
Figure 5.2
Connecting the additional
grounding cable
5.2 AC Grid Wire and Backup Output Connection
AC side conductor cross-sectional area of
cables
（
mm
²）
Backup side conductor cross-sectional area
of cables
（
mm
²）
Conductor material
Scope
Recommended value
Scope
Recommended
value
Copper
8-14
13.3
8-10
8.37
Table 5.1
Recommended AC cable specification
Note: If the grid-connection distance is too far, please select an AC cable with larger diameter as per the
actual condition.
Power cable connection procedure:
Step 1&2: Plug in the assembly and disassembly tool to separate the locking nut and cable gland body
Step 3: Pull the assembly and disassembly tool out
Step 4: Unlock the sealing nut
Step 5: Strip the insulation off the wires with 13mm length
Step 6: Thread the cable through the cable gland and secure the wires with spanner
Step 7: Connect the cable to the inverter
Step 8: (Only applicable to market in Australia) During off grid operation time, PE line at the BACK-UP end will
remain to be connected with the PE line at the power grid end inside the inverter.
Additional grounding cable