SMA AUTOMATIC SWITCH BOX L - Manual (Page 23)

SMA Solar Technology AG Electrical Connection
Installation Guide AS-BoxL-IEN084410 23
5.4 Connecting the Feed-in Meter
Cable protection
For purposes of fuse protection and isolation, a line circuit breaker must be installed
between the Automatic Switch Box and the feed-in meter. Be sure to observe all standards
applicable to the installation site.
Connection requirements
The Sunny Backup system is only certified for TN grids and may not be installed in TT grids.
Comply with all connection regulations of your utility operator.
PV systems without a feed-in meter
The Sunny Backup system can also be used in PV systems without a feed-in meter. If you
do not connect a feed-in meter to the Automatic Switch Box, you must bridge the feed-in
meter (X5/PV Meter) and the consumption meter (X1/Load Meter) outside of the
Automatic Switch Box.