6 Electrical Connection SMA America, LLC
44 SB30-40-US-IA-en-33 Installation Manual
1. Connect the PV ground terminal to the PV protective conductor (torque: 15 in-lb. (1.7 Nm)).
2. If a DC protective conductor is prescribed, connect the DC protective conductor to the
DC ground terminal (torque: 15 in-lb. (1.7 Nm)).
3. Ensure that all ground terminals are correctly connected and that the cables are securely
positioned in the screw terminals.
6.4.3 Grounding the DC Input
The grounding of the PV plant depends on the type of PV module used. At the factory, the inverter is
designed for PV plants with negative grounding of the PV array.
Figure 18: Position of fuse holder for fuse extractor with ground fuse and pin header for jumper
Danger to life due to high voltages in the PV plant
Death or serious injury due to electric shock.
• Only insert ground fuses into the inverter using a fuse extractor.
Position Designation
A Fuse holder For connecting the fuse extractor with
ground fuse
B Pin header For connecting the jumper
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