Delta RPI M30A Operation And Installation Manual page 23

Note for Field Wiring
Due to the limitation of physical wire also the DC connector used in the
inverter, the absolute maximum current of each DC connector should be
always observed as following table to keep fire risk away.
Note that, the following value is provided to identified and checked the
justification for field wiring instead of the DC current rating of inverter.
Connection with PV Combiner Box
M50A:
M50A is not suitable to connected with PV combiner box.
-Normally, the output current of combiner box is larger than 16A.
Thus it can't be used as the following diagram (Shown as Figure 4-7).
>16A
RPI M30A_121
RPI M50A_120
RPI M50A_122
Table 4-1 Maximun current rating of each DC connector
>16A
32A
16A
16A
>16A
Figure 4-7
23
>16A
Wiring