SMA SB 1300TL - Manual (Page 20)

8. If no additional grounding or equipotential
bonding is required, secure the inverter to the
wall mounting bracket with the M6x12 screw to
prevent it from being lifted off.
9. Ensure that the inverter is securely in place.
5 Mounting SMA Solar Technology AG
Operating Manual SB13-21TL-BE-en-11 20