Electrical connection SMA America, LLC
54 SB30-40US-IUS103030 Installation Guide
11. Torque all wires in the terminal blocks inside the Sunny Boy to 15 in-lbs. (1.7 Nm).
12. Verify that all connections are correctly wired and properly torqued. Pull on the cable in order
to make sure that it is sufficiently fixed in the terminal.
7. Pull the DC wires from the DC disconnect through the
conduit into the interior of the Sunny Boy.
8. Pull the wires slightly back in order to seal the grommet.
9. Connect the white wire (PV GROUNDED) to the terminal
labeled DC+ in the Sunny Boy.
10. Connect the black wire (PV UNGROUNDED) to the
terminal labeled DC- in the Sunny Boy.
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