Electrical Connection
22
ESS Inverter User Manual
c
c
Cable Gland
Threaded Sleeve
Connection Terminal
GRID/BACKUP/GEN Connector Structure
b
Multiple inverters are not allowed to share a circuit breaker.
Load is not allowed to connect between the inverter and the
AC breaker.
NOTICE
4.2
GRID/BACKUP/GEN Connection
Before connecting the GRID/BACKUP/GEN terminal, ensure that both the AC terminal and the DC
terminal are powered OFF and the PV switch is OFF. Otherwise there is a risk of high voltage shock.
GRID/BACKUP/GEN connection please refer to below.
Step 1: Assemble the AC connector and then insert AC connector into GRID/BACKUP/GEN port.
It is recommended to use
outdoor dedicated cables
with multiple copper cores.
A
B
C
Tighten three screws
and ensure each screw
1
cap does not exceed
the surface.
Earth
Click
A.
Diameter
14 ~ 20/
10~14/
10~14mm
B.
Cross Section 8~14/
4~6/
4~6mm²
C.
Strip Length ~10mm
PE
L
N
Neutral
Line
2
3
Tighten nut to
avoid loosening.
Step 2: Connect the AC breaker.
An AC breaker
（
≥50A
）
should be installed between inverter and the grid/critical load/GEN
devices (generator, on-grid inverter or smart load).
a.
Before connecting the AC cable from inverter to AC breaker, you should confirm the AC
breaker is working normally. Turn off the AC breaker and keep the status.
b.
Connect the PE conductor to grounding electrode, and connect the N and L conductors to
AC breaker.
c.
Connect the AC breakers to the grid/critical load/GEN devices (generator, on-grid inverter
or smart load).
d
c
a