SMA SB 4200TL Multi-String Installation - Manual (Page 22)

Installation SMA Technologie AG
Page 22 SB4200TL-13:SE2006 Installation Guide
5. Connect the earth wire (PE) of the mains lead to
the top terminal of the three-terminal block on
the circuit board.
Connection of PE conductor
6. Fix the PE conductor on the lid again. Fasten the lid to the enclosure of the Sunny
Boy 4200TL Multi-String by tightening the four screws.
Do not switch on the circuit breaker yet! The Sunny Boy 4200TL
Multi-String may only be connected to the AC grid when the PV
strings have been connected and the device is tightly closed.