5
Preparations
3.1
Connect cables in accordance with local installation laws and regulations.
Before connecting cables, ensure that the circuit breaker on the Backup Box and all the
switches connecting to the Backup Box are set to OFF position. Otherwise, the high voltage
of the Backup Box may result in electric shocks.
3
Electrical Connection
No. Cable
Type
Conductor Cross-
Sectional Area Range Outer Diameter
1
PE cable
Single-core outdoor copper
cable
4–10 mm
2
N/A
2
Off-grid load
output power cable Outdoor copper cable
4–6 mm
2
10–21 mm
3
Grid AC output
power cable
Outdoor copper cable
4–6 mm
2
10–21 mm
4
Inverter AC input
power cable
Outdoor copper cable
4–6 mm
2
10–21 mm
5
Signal cable
Two-core outdoor shielded
twisted pair cable
0.20–1 mm
2
4–8 mm
Prepare cables based on site requirements.
Installing a PE Cable
3.2
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks
may occur.
Ground point
