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ELECTRICAL CONNECTION
7.4
AC Connection
7.4.1
Conditions for the AC Connection
AC breakers must be installed on the AC side of the inverter to ensure that the
inverters can be safely disconnected from the power grid and the load.
Do not connect loads between the inverter and the grid breaker.
No consumer load should be applied between the AC circuit breaker and the inverter. Use
dedicated circuit breakers with load switch functionality for load switching.
The selection of the AC circuit breaker rating depends on the wiring design (wire cross
section area), cable type, wiring method, ambient temperature, inverter current rating,
etc. De-rating of the AC circuit breaker rating may be necessary due to self-heating or if
exposed to heat. Depending on site system configuration to select an appropriate AC
circuit breaker.
The maximum AC current of the inverters can be found in the following table.
Description
Max Current
Inverter (indoor)
Inverter (outdoor)
Grid side
40A
52.2A
Backup side
21.7A
26.1A
DANGER
Danger to life due to fire!
You must protect each inverter with an individual AC circuit breaker in order to ensure
that the inverter can be disconnected safely.
