6 Electrical Connection
SMA Solar Technology AG
38
STP5-9TL-IA-en-10
Installation Manual
6.3.3 Additional Earthing of the Enclosure
If a second protective conductor or equipotential bonding is required locally, you can also earth the
enclosure. This prevents touch current if the original protective conductor fails.
Cable requirement:
☐ Earthing cable cross-section: 16 mm² at maximum
1. Strip the earthing cable insulation.
2. Route the clamping bracket via the stranded wire.
Arrange the stranded wire on the left-hand side.
3. Secure the clamping bracket using the M6x16
cheese-head screw and a conical spring washer.
The teeth of the conical spring washer must face the
clamping bracket.
