Grounding Connection; Cable And Terminal Lug Requirements; Connecting The Grounding Cables - SMA SUNNY CENTRAL 500CP XT Installation Manual

9 Grounding Connection

9 Grounding Connection

9.1 Cable and Terminal Lug Requirements

Cables:
☐ Use copper or aluminum cables only.
☐ Maximum cable cross-section: 400 mm
Terminal lugs:
☐ Use tin-plated terminal lugs only.
☐ Only use the nuts, screws and washers included in the scope of delivery for the connection.
☐ Always connect two-hole terminal lugs with two screws.
☐ The terminal lugs must be designed for temperatures of at least +95°C.
☐ The width of the terminal lugs must exceed the washer diameter (32 mm). This will ensure that the defined torques
are effective over the whole surface.

9.2 Connecting the Grounding Cables

Equipotential bonding
• Ground the Sunny Central in accordance with the applicable regulations.
Figure 15: Assembly of the connection for one terminal lug
Position Designation
A Nut
B Spring washer
C Fender washer
D Aluminum busbar
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