SMA Solar Technology AG
48 SB50US-80US-IUS094030 Installation Guide
11. Connect the wires to the terminal blocks in the Sunny Boy and tighten them. Torques for AC
connection terminal blocks:
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.
AC Connection Terminals for 208 V (not for Sunny Boy 8000US) and 240 V
The terminal must be opened completely before you insert the cable.
Grey Terminal Blocks (Weidmüller) 10 - 6 AWG: 18 in-lb (2 Nm)
Green Terminal Blocks (Phoenix) 8 - 6 AWG: 40 in-lb (4.5 Nm)
10 AWG: 22 in-lb (2.5 Nm)
Position Description
A L1 wire connected to L1 terminal
B N wire connected to N terminal
C L2 wire connected to L2 terminal
D Equipment ground wire connected to PE terminal
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