Huawei Backup Box-B0 Quick Manual page 7

Installing an Output Power Cable for Off-Grid Loads
3.3
Before installing a cable, open the panel of the Backup Box, route the cable through the off-grid
load port, and connect the cable. After all cables are connected, reinstall the panel.
Off-Grid Load Terminal (X1)
1 2
No..
Single- L N
Phase
3.4 Installing a Grid AC Output Power Cable
Connecting Grid AC Terminals （ X2 ）
No. 1
Single-Phase L
3 4
- PE
2 3 4
- - N
Off-Grid Load Terminal (X1)
1 2
No..
L N
Three-
Phase
X1
5 6 7
- PE -
6
3 4
- PE