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I N S T A L L A T I O N M A N U A L
M I G 3 0 0 M I C R O I N V E R T E R
Compatibility and Capacity
Darfon MIG300 micro inverters are electrically compatible with PV modules that have a voltage range of
24V to 40V and a maximum wattage of 300W. Please refer to the ‘Compatible PV Module Calculator’ on
Darfon website at www.darfonsolar.com to verify the PV module is electrically compatible.
Before ordering the PV module, make sure the connector type is compatible with the micro inverter.
Electrical Compatibility
Model
PV MPPT Voltage Range
PV Module Connector Type
MIG300
24V to 40V
MC-4 Locking [Male-Anode (+), Female-Cathode (-)]
-
+
MALE (ANODE)
FEMALE (CATHODE)
MALE (CATHODE)
FEMALE (ANODE)
-
+
MALE (CATHODE)
FEMALE (ANODE)
MALE (CATHODE)
FEMALE (ANODE)
Voltage and Capacity
Maximum Number of MIG300s per AC Branch Circuit
Overcurrent Protection
240V with 10AWG AC Trunk Cable
24
30Amp Breaker
240V with 12AWG AC Trunk Cable
16
20Amp Breaker
WARNING
DO NOT exceed the maximum number of micro inverters in an AC branch
circuit as listed above.
CAUTION
Each AC branch circuit must be protected by a dedicated circuit breaker of 30A
or less if using 10 AWG trunk cable, or 20A or less if using 12 AWG trunk cable.
AC Trunk Cable
There are different types and options for AC
trunk cables. Depending on the orientation of the
installation, the AC trunk cable can be in portrait
or landscape format. Trunk cables can also consist
of three pins (three wires) or four pins (four wires).
Darfon uses the four-pin AC trunk cable.
Pin Wire Color Wire Usage
1
Black
L1
2
Red
L2
3
Green
Ground
4
White
Neutral