SMA SC 500HE-20 Installation - Manual (Page 46)

10 Cable Connection in the Connection Cabinet SMA Solar Technology AG
46 SCxxxHE-20-IA-IEN111210 Installation Manual
10.2 Preparing the Cable Connection
1. Switch off the miniature circuit-breaker of the
external voltage supply.
2. Switch off the miniature circuit-breaker of the grid
monitoring.
3. Open the test and disconnect terminals.
4. Unscrew and remove the Plexiglas in front of the fuses.