Electrical Connection
SMA America, LLC
40
SI5048U-TUS121440
Technical Description
An overview of the different components and their connection areas of the Sunny Island 5048U can
be found in section 2.2 ”At a Glance” (page 22).
Detailed installation descriptions of the connections are provided in the following sections:
• Grounding (section 6.5 ”Interface for External Communication” (page 60))
• DC connection (section 6.2 ”DC terminal” (page 43))
• AC connection (section 6.3 ”AC Connection” (page 46))
• Battery temperature sensor (section 6.4.1 ”Battery Temperature Sensor” (page 50))
• Battery current sensor (section 6.4.2 ”Battery Current Sensor” (page 52))
• Communication for multi-device connection (section 6.4.3 ”Communication for Multi-device
Connection” (page 53))
• Multi-function relay 1 and 2 (section 6.4.4 ”Multi-function Relay 1 and 2” (page 55))
• External communication (section 6.5 ”Interface for External Communication” (page 60)).
AC connections
22 in-lbs. − 39 in-lbs.
(2.5 Nm − 4.5 Nm)
AWG 4 (25 mm²)
Only use copper
conductors. These must
be rated for at least
167°F (75 °C). Do not
use fine-wire strands.
Additional Connections 5 − 7 in. lbs.
(0.56 Nm − 0.79 Nm)
AWG 30 − AWG 12
(0.05 mm² - 4 mm²)
Only use copper
conductors. These must
be rated for at least
167°F (75 °C).
Terminal
Bolt clamp
Wire Size
Wire type
