SMA STP 110-60 - Connecting the Grounding

8 Electrical Connection
SMA Solar Technology AG
Operating manual STP110-60-BE-en-16 41
18. Tighten the two screws on the cable compartment
cover (TX30, tightening torque: 4.3Nm).
2
2x2x2x
1
8.4 Connecting the Grounding
An additional grounding of the inverter is required to protect from touch current in case the
grounding conductor fails at the terminal of the AC cable.
The inverter features a grounding terminal with 2 connection points for ground connection (e.g.
when using a grounding electrode).
The connection points have been labeled with the following symbol:
The required M6x12 screw with spring washer and washer is included in the scope of delivery of
the inverter.
Additionally required material (not included in the scope of delivery):
☐ 1 grounding cable
☐ 1 ring terminal lug M6
☐ 1 heat-shrink tubing
Cable requirements:
☐ Cross-section of the grounding cable if a copper cable is used: at least 10 mm²
☐ Cross-section of the grounding cable if an aluminum cable is used: at least 16 mm²
Procedure:
1. Strip the grounding cable insulation.
2. Pull the heat-shrink tubing over the grounding cable.
The heat-shrink tubing must be below of the stripped
cable section.