SolarEdge SE50K Installation Manual page 33

Connecting the Strings to the Connection Unit
Figure 22: DC Spring-clamp terminals
5. Close the Connection Unit cover: Attach the switch cover and secure it by tightening the four screws
with a torque of 1.2 0 .9 ft.*lb.
To connect the strings to the Connection Unit with MC4 connectors:
Connect the DC connectors of each string to the DC+ and DC- connectors according to the labels on the
Connection Unit.
Figure 23: Connection Unit with MC4 Connectors
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Extended Power Commercial Inverter Installation Guide MAN-01-00402-1.0