SMA SUNNY BOY 5000-US Installation Manual page 51

SMA America, LLC
12. Pull the DC cables from the SMA DC disconnect
inside the Sunny Boy.
13. Pull the cable back slightly so as to seal the sealing
grommet.
14. Connect the black cable (PV UNGROUNDED) to
the terminal labeled DC+ in the Sunny Boy.
15. Connect the white cable (PV GROUNDED) to the
terminal labeled DC − in the Sunny Boy.
16. Tighten all cables in the AC and DC terminal blocks in the Sunny Boy:
Gray terminal blocks (Weidmüller)
Green terminal blocks (Phoenix)
17. Check whether all connections are correctly wired. Carry out a tensile test to see whether all
cables are tight.
SB50US-80US-IA-en-36
10 ... 6 AWG: 18 in-lb. (2 Nm)
8 ... 6 AWG: 40 in-lb. (4.5 Nm)
10 AWG: 2 in-lb. (2.5 Nm)
SB50US-80US-IA-en-36
Electrical Connection
2 3 5 7 A B + -
2 3 5 7 A B + -
51