
6 Electrical Connection
SMA Solar Technology AG
Operating manual
EVCxx-10-BE-en-10
28
6.3.2
Connecting Additional Grounding
If additional grounding or equipotential bonding is required locally, you can connect additional
grounding to the product. This prevents touch current if the grounding conductor at the terminal for
the AC cable fails.
Additionally required material (not included in the scope of delivery):
☐ 1 clamping bracket M5
☐ 1 hexagon socket cap head screw M5 x 16
☐ 1 washer M5
☐ 1 spring washer M5
Cable requirements:
Use of fine-stranded conductors
You can use an inflexible or a flexible, fine-stranded conductor.
• 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
Procedure:
1. Strip off 12 mm of the grounding cable insulation.
2. Insert the screw through the spring lock washer, the clamping bracket and the washer.
3. Lightly screw the screw into the thread of the connection point for the additional grounding.
4. Guide the grounding cable between the washer
and clamping bracket and tighten the screw (TX25)
(torque: 6 Nm).
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