Electrical Connection - Huawei Backup Box-B0 Quick Manual

3

Electrical Connection

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.
Prepare cables based on site requirements.
No. Cable
1 PE cable
Off-grid load
2
output power cable
Grid AC output
3
power cable
Inverter AC input
4
power cable
5 Signal cable
Installing a PE Cable
3.2
Do not connect the neutral wire to the enclosure as a PE cable. Otherwise, electric shocks
may occur.
Type
Single-core outdoor copper
cable
Outdoor copper cable
Outdoor copper cable
Outdoor copper cable
Two-core outdoor shielded
twisted pair cable
Ground point
Conductor Cross-
Sectional Area Range
2
4–10 mm
2
4–6 mm
2
4–6 mm
2
4–6 mm
2
0.20–1 mm
5
Outer Diameter
N/A
10–21 mm
10–21 mm
10–21 mm
4–8 mm