SMA SI 3324 Installation - Manual (Page 51)

SMA Technologie AG Electrical Connection
Installation Guide SI3324/4248-14:SE2406 Page 51
3. Feed the conductors through the metric-thread cable screw connection into the
housing of the Sunny Island 3324/4248.
4. Insert the first conductor with the cable end sleeve into one of the "G_Req"
connection terminals and tighten the terminal screw firmly. Then connect the
second conductor to the second "G_Req" connection terminal. The polarity of
the two conductors does not matter.
5. Now tighten the metric-thread cable screw connection firmly.