SMA METER BOX FOR SUNNY BACKUP - Manual (Page 18)

6 Electrical Connection SMA Solar Technology AG
18 METERBOXSBU-IA-en-40 Installation Manual
This will prevent quality losses in the data transmission between the reading heads and the Meter Box.
Keep cable route within the main distribution as short as possible:
Figure 9: Keeping the cable route within the main distribution as short as possible
• Lay the connection cables of the reading heads and the extension cords along the shortest
possible route from the respective energy meter to the enclosure of the AC main distribution.
Wind up the cables outside of the AC main distribution:
Figure 10: Winding up the cables outside of the AC main distribution
• If a connection cable or an extension cord is too long, wind up and fasten the segment outside
of the AC main distribution that is not required (for example, with cable ties).