7 Installation
Grounding the inverter housing
60
7.4 Grounding the inverter housing
WARNING
High current
►
Always observe the local regulations relating
to grounding cable requirements.
►
To increase the safety of the system, always
ground the inverter housing even when this
is not required by the local regulations.
►
Always ground the inverter housing
before
connecting the inverter to the grid and the
solar modules.
►
The grounding cable cross-section must be
at least 6 mm
2
.
The inverter housing can be grounded at 2
points:
●
External, bottom left at the grounding screw
●
Internal, on the PE screw of the AC connec-
tion
7.4.1 Grounding via the grounding screw
1. Screw the grounding cable onto the left side of the inverter
base. The screw, spring washer and washer are already
mounted on the inverter.
Grounding screw: 1 x M10
2. Perform a continuity check of the grounding connection.
→ If there is not a sufficiently conductive connection,
clean the contact surface on the grounding screw or
use a toothed washer if necessary.
Installation and Operation Manual for Solar Power Inverter M70A EU V2.0 EN 2020-08-03