SMA AUTOMATIC SWITCH BOX XL - Manual (Page 32)

Electrical Connection SMA Solar Technology AG
32 AS-BOX-XL-IEN094410 Installation Guide
5.4.4 Connecting the Consumption Meter
DANGER!
Danger to life due to non-protection of the residual current device (RCD)
The protective function of any residual current devices (RCDs) installed between the grid
and Automatic Switch Box would be rendered ineffective by the Backup‑System.
• Do not connect a residual current device (RCD) between the grid and the Automatic
Switch Box.
• Do connect a residual current device (RCD) between consumer loads and the
Automatic Switch Box.
DANGER!
Electric shock due to an incorrectly grounded neutral conductor.
The Sunny Backup-System requires a grounded neutral conductor in order to form a TN
grid in a power outage and to apply the appropriate protective measures.
• Do not install any switching elements in the grounded neutral conductor to the
Automatic Switch Box.
DANGER!
Electric shock due to incorrect grounding of the grid-side PEN conductor.
• Ground the grid-side PEN conductor inside the house connection box.
Example: Connection from house connection box to the equipotential bonding bar.