User manual

6
WARNING: Only Line wires can be connected breaker. It’s not allowed to add breaker
into Neutral wires between inverter and the BUS bar. All Neutral wires are connected to the
BUS bar directly, and you can add a breaker between the utility and the bus bar in the
distributor.
WARNING: Be sure the length of all AC input cables is the same to guarantee reliability of
sharing current in each unit.
WARNING: Recommended spec of cable from inverter to BUS bar and breaker is listed as
below. The cable used from BUS bar to AC power should be X pcs of cable from inverter to
BUS bar and breaker. X indicates the number of inverters connected in parallel.
Suggested cable wire and breaker requirement for AC input connection:
Model
Amperage for breaker
AWG no.
Torque
4KVA
40 A
10 AWG
1.4~1.6Nm
5KVA
50 A
8 AWG
1.4~1.6Nm
7. AC Output (Load) Connection
Parallel in single phase
Connect Line wires of AC output from each unit to Line BUS bar. Connect Neutral wires of AC
output from each unit to Neutral BUS bar. Refer to below figure for connection of AC output.
Support three-phase equipment
Connect Line wires of AC output from each unit to the load. Connect Neutral wires of AC output
from each unit to Neutral BUS bar. Refer to below figure for connection of AC output.
Breaker
BUS Bar
BUS Bar
BUS Bar