SMA SC 250U - Manual (Page 44)

6 Electrical connection SMA America, LLC
44 DISU_SCUS-IA-IUS111711 Installation Guide
Figure 27: Overview AC connection to power distribution grid with screw terminals
AC connection Disconnect Unit for Sunny Central 500HE-US/CA/Sunny Central
CP
Figure 28: Overview AC connection to power distribution grid - phases
C
B
A