SMA America, LLC Electrical Connection
Technical Description SI5048U-TUS121440 39
6 Electrical Connection
All cables are fed through the openings on the bottom side of the device (see next illustration) and
connected to the appropriate connection terminals on the Sunny Island.
Use cable ducts to install the cables on the DC and AC sides on the Sunny Island. The cable ducts
guarantee a dust-free and waterproof installation of the cables in the enclosure and also provide
strain relief for the cable connection. Close all unused openings in the enclosure using the appropriate
filler plugs.
Use the provided terminal blocks to connect the cables inside the Sunny Island enclosure in a manner
conforming to the appropriate standards.
Obtain an overview of the different components and connection areas of the Sunny Island 2.2”At a
Glance” (page22)).
Refer to the table below for the appropriate torque values and wire sizes.
Terminal Bolt clamp Wire Size Wire type
DC connections 50 in‑lbs. (5.7 Nm) AWG10 - AWG2/0
(6 mm² − 70 mm²)
Only use copper
conductors. These must
be rated for at least
167°F (75 °C). Do not
use fine-wire strands.
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