SMA ST6-US User Manual
Page 35
SMA America, LLC
Electrical connection
Installation Guide
ST36-48US-IA-IUS112321
35
AC wiring for 208 V/240 V grid configuration
1. Connect the white wire of the AC/DC disconnect to the terminal labeled N and the black wire
to the terminal labeled L1 of the Sunny Boy.
2. connect the blue wire to the terminal labeled L2 in the Sunny Boy.
3. Connect the wires to the terminal blocks in the Sunny Boy and tighten to a torque of 18 in lb
(2 Nm).
4. Verify that all connections are correctly wired and properly torqued.
☑ The Sunny Boy is connected to the 208 V/240 V grid.
5. Repeat steps 1 to 4 for the AC wiring of the remaining Sunny Boy inverters.
Position
Description
A
Black wire connected to L1 terminal
B
Blue wire connected to L2 terminal
C
White wire connected to N terminal