Connecting Additional Grounding

Qualified person

If additional grounding or equipotential bonding is required locally, you can connect additional grounding to the inverter. This prevents touch current if the grounding conductor at the terminal for the AC cable fails.

Grounding of the battery

The grounding of the battery must not be connected to the connection point for additional grounding on the inverter.

  1. Connect the grounding of the battery to the grounding point of the battery.
  2. Ground the battery according to the battery manufacturer's specifications.

Cable requirements:

Use of fine-stranded conductors

You can use an inflexible or a flexible, fine-stranded conductor.

  1. When using a fine-stranded conductor, it has to be double crimped by a ring terminal lug. Make sure that no insulated conductor is visible when pulling or bending. This will ensure sufficient strain relief by means of the ring terminal lug.
  • Grounding cable cross-section: max. 10 mm²


  1. Connect the grounding conductor to the grounding terminal:
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    • Strip off the conductor insulation by 18 mm.

    • Insert the screw through the conical spring washer, the clamping bracket and the washer.

    • Guide the conductor between the washer and clamping bracket and tighten the screw (TX 25) (torque: 6 Nm ± 0.3 Nm).