Electrical Connection
SMA America, LLC
46
SB50US-80US-eng-IUS112633
Installation Guide
23. Tighten the AC terminal blocks in the inverter with the following torques:
24. Check that all terminals have the correct wiring and that the cables are secure.
208 V and 240 V System Configuration
Do not connect the Sunny Boy 8000-US to a 208 V grid.
19. Connect the white cable of the SMA DC Disconnect
to the terminal labeled N. Connect the black cable
of the SMA DC Disconnect to the terminal labeled
L1.
20. Connect the red insulated conductor to the terminal
labeled L2.
277 V System Configuration
21. Connect the white cable of the SMA DC Disconnect
to the terminal labeled N. Connect the black
insulated conductor of the SMA DC Disconnect to
the terminal labeled L1.
22. Connect the red insulated conductor to the terminal
labeled
.
Gray terminal blocks (Weidmüller)
10 … 6 AWG: 18 in-lbs. (2 Nm)
Green terminal blocks (Phoenix)
8 … 6 AWG: 40 in-lbs. (4.5 Nm)
10 AWG: 2 in-lbs. (2.5 Nm)