Requirements for the grounding cable for additional grounding

• The conductor must be solid or stranded or finely stranded wire. If finely stranded wire is used, the conductor must be double-crimped with a ring terminal lug. Ensure that no insulated conductor is visible when pulling or bending. This will ensure sufficient strain relief by means of the ring terminal lug.

• Cable cross section: at least 6 mm²

• The cable must be dimensioned in accordance with the local and national directives for the dimensioning of cables. The requirements for the minimum conductor cross-section derive from these directives. Examples of factors influencing cable dimensioning are: nominal AC current, the connected AC backup loads, type of cable, routing method, cable bundling, ambient temperature and maximum desired line losses (for calculation of line losses, see the design software "Sunny Design" from software version 2.0 at www.SMA-Solar.com).

Also see:

• Connecting Additional Grounding