SMA America, LLC 6 Electrical Connection
Technical description SI4548_6048-US-TB_en-13 37
6 Electrical Connection
All cables are routed 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 conduits to install the cables on the DC side and on the AC side on the Sunny Island. Conduits
ensure the dust-tight and water-tight mounting of the cables on the enclosure and also serve as a strain
relief of the cables at the 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 devices and connection areas of the Sunny Island
(see Section 2.2 "At a Glance", page 22).
Refer to the table below for the appropriate torque values and cable sizes.
Terminal Torque Cable size Cable type
DC connections 21 ft-lbs. (28 Nm) AWG 6 to AWG 3/0
(16 mm² to 95 mm²)
Only use copper
conductors.
These cables must be
approved for 167°F
(75°C).
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