SMA Solar Technology AG Electrical Connection
Installation Manual WB33-38-IA-IEN120940 23
5.3 Connection to the Electricity Grid (AC)
5.3.1 Conditions for AC Connection
Cable sizing
Use Sunny Design Version 2.0 or higher for sizing the conductor cross-sections
(see Sunny Design program at www.SMA.de/en).
The maximum cable lengths as a function of conductor cross-section are shown in the following table.
Cable requirements
Connection requirements of the network operator
Always comply with the connection requirements of your network operator.
Cable cross-section Maximum cable length
WB 3300 / WB 3300-11 /
WB 3300-IT
WB 3800 / WB 3800-11 /
WB 3800-IT
4 mm² 18.5 m 16 m
Object Description Value
A External diameter 6 mm … 14 mm
B Conductor cross-section 4 mm²
C Stripping length 8 mm
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