SMA Sunny Boy 3000US - DC Wiring Without SMA DC-Disconnect

Wiring the Sunny Boy Wiring the DC Input
SB3000US-4000US-11-SE1607 SMA America 5-19
DC Wiring Without SMA DC-Disconnect
Use the following procedure to connect the DC wires to the Sunny Boy without SMA
DC-Disconnect:
1. Verify that the AC breaker is OFF.
2. Verify that the external DC disconnect is open in the DC disconnect enclosure.
3. Install a 3/4-inch conduit fitting in the Sunny Boy’s DC wiring knockout (see
Figure 5-1 and Figure 5-10). Fasten the conduit fitting on the inside of the
Sunny Boy with the appropriate locknut.
4. Install 3/4-inch conduit between the external DC disconnect enclosure and the
Sunny Boy’s DC wiring knockout.
Note: Refer to Figure 5-10 for steps 5 through 7.
Figure 5-10 DC Connection Terminals
Positive DC wire
connected to DC+
terminal
Negative DC wire
connected to DC-
terminal