SMA DB-DC-DISCON - Manual (Page 4)

SMA Solar Technology AG
DC_Disc-IUS082311 4 / 4 Additional Information for Installation
AC Wiring in the Sunny Boy
Pay attention to all operation and safety instructions listed in the Installation Guide of the Sunny Boy.
This instruction does NOT replace the Sunny Boy Installation Guide.
L1 Connect the black L1 (AC line 1 or
UNGROUNDED) wire of the SMA DC-
Disconnect to the terminal labeled L1 in
the Sunny Boy.
L2 Connect the red L2 (AC line 2) wire of
the SMA DC-Disconnect to the terminal
labeled L2 in the Sunny Boy.
Only for 277 V:
L2 terminal not used!
N Connect the white N (AC line N) wire of
the SMA DC-Disconnect to the terminal
labeled N in the Sunny Boy.
PE Connect the green-yellow AC
equipment-ground wire of the SMA DC-
Disconnect to the PE terminal labeled
in the Sunny Boy.