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3.4 Grid connec�on and backup load connec�on
· Before connec�ng to grid, please install a separate AC breaker between inverter and grid. Also,
it is recommended that installs an AC breaker between backup load and inverter.This will ensure
the inverter can be securely disconnected during maintenance and fully protected from over
current. For the 29.9/30/35/40/50KW model, the recommended AC breaker for backup load is
240A. For the 29.9/30/35/40/50KW model, the recommended AC breaker for grid is 240A.
All wiring must be performed by a qualified personnel.It is very important for
system safety and efficient opera�on to use appropriate cable for AC input
connec�on. To reduce risk of injury, please use the proper recommended cable
as below.
· There are three terminal blocks with "Grid" "Load"and "GEN" markings. Please do not misconnect
input and output connectors.
GRID
LOAD
E-BAR
E-BAR
GEN
1. Before making Grid, load and Gen port connec�on, be sure to turn off AC breaker or
disconnector first.
2. Remove insula�on sleeve 10mm length, insert the wires according to polari�es indicated on
the terminal block. Make sure the connec�on is complete.
Please follow below steps to implement Grid, load and Gen port connec�on:
Chart 3-3 Recommended Size for AC wires
Grid connec�on(Copper wires)
backup load connec�on(Copper wires)
N
L1
L2
L3
29.9/30/35/40/50KW
PE
Model
Wire Size
4/0AWG
Cable(mm )
2
70
Torque value(max)
29.9/30/35/40/50KW
Model
Wire Size
4/0AWG
Cable(mm )
2
70
Torque value(max)
28.2Nm
28.2Nm
