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User Manual V1.0-2022-05-10
06 Electrical Connection
6�4 Connecting the AC Output Cable
WARNING
• Do not connect loads between the inverter and the AC switch directly connected to it.
• Where an external RCD (Residual Current Device) is required in addition to the built-in RCMU
(Residual Current Monitoring Unit), and a type A RCD must be used to avoid tripping，with a
tripping current of 300mA or higher.
An AC circuit breaker should be installed on the AC side to make sure that the inverter can safety
disconnect the grid when an exception happens. Select the appropriate AC circuit breaker in
compliance with local laws and regulations. Recommended AC circuit breakers:
Inverter model
AC circuit breaker
GEP4.0-3-1, GEP5.0-3-1, GEP6.0-3-10
16A
GEP8.0-3-10, GEP8-3-AU10, GEP10-3-10, GEP10-3-
AU10
25A
GEP12-3-10, GEP15-3-10
32A
GEP20-3-10
40A
NOTICE
Install one AC circuit breaker for each inverter. Multiple inverters cannot share one AC circuit
breaker.
Cable Type
Five-core outdoor copper cable
Outside Diameter
18~25mm
Conductor cross-sectional area
6~16mm
2
WARNING
• Pay attention to the silkscreens L1, L2, L3, N, PE on the AC terminal. Connect the AC cables
to the corresponding terminals. The inverter may be damaged if the cables are connected
inappropriately.
• Make sure that the whole cable cores are inserted into the AC terminal holes. No part of the
cable core can be exposed.
• Make sure that the cables are connected securely. Otherwise, the terminal may be too hot to
damage the inverter when the inverter is working.
• Reserve certain length of PE cable. Make ensure that the PE cable is the last one to bear the
stress when the AC output cable is under tension.
