Connect PV strings
CAUTION
: As the PV string generates power as long as there is light, a circuit
breaker with 60A rating shall be installed as shown below, so that PV string can be
disconnected when needed (e.g. regular maintenance).
Please follow below step to implement PV module connection:
WARNING!
All wiring shall be performed by a qualified technician.
WARNING!
Please do not use PV panel which requires one
terminal connected to ground (e.g. thin-film panel).
Step 1
- Disconnect the unit from the battery either by turning off the battery
breaker or removing the battery cables from the battery. Note that turning
the unit off does not disconnect the batteries.
Step 2
- Remove bottom cover & knock off “PV” hole.
Step 3
- Thread the wires through “PV” hole on bottom cover, and then connect
the PV string wires to PV input terminals. Check the polarity of wires
before connecting to terminals.
Step 4
- Fix bottom cover with two screws.
Step 5
- Turn on battery breaker or connect battery cable.
The recommended wire gauge and fixing torque are as below,
Model Number
PV Input Wire Gauge
Torque
POWERBACK PB3000S
10 AWG
1.2~1.8 Nm
POWERBACK PB5000S
10 AWG
1.2~1.8 Nm
60Amps
