4 connecting additional sma pv offset boxes – SMA PVO-N-20 User Manual
Page 31

SMA Solar Technology AG
7 Electrical Connection
Installation Manual
PVO-BOX-IA-en-10
31
18. Screw the enclosure lid onto the SMA PV Offset
Box using the 4 screws (torque: 5 Nm).
7.2.4 Connecting Additional SMA PV Offset Boxes
The AC cable is looped through between each SMA PV Offset Box.
1. Disconnect the previously installed SMA PV Offset Box from all voltage sources (see Section 9).
2. Slightly release the swivel nut of the second cable
gland M20 on the previously installed
SMA PV Offset Box.
3. Remove the sealing plug from the cable gland.
4. Route the cable through the cable gland to the terminals in the previously installed
SMA PV Offset Box.
5. Remove the cable ties.
6. Connect L and N to the 4-pole plug as follows:
• Connect L to the first or second free terminal.
• Connect N to the third or fourth free terminal.
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