Requirements on the AC cable to the inverter

  • Conductor type: copper wire

  • The conductors must be made of solid wire, stranded wire or fine stranded wire, with or without bootlace ferrules. When using fine stranded wire without bootlace ferrules, a flat-blade screwdriver must be used to unlock the terminal.

  • Conductor cross-section: 4 mm² to 10 mm²

  • The cross-section of the grounding conductor must not be smaller than the cross-section of the other conductors.

  • External diameter: 10 mm to 25 mm

  • Insulation stripping length: 18 mm

  • The cable and conductor cross-sections must always be dimensioned according to the local and national directives and within the range specified by the manufacturer (SMA Solar Technology AG)." If the manufacturer (SMA Solar Technology AG) requires a higher conductor cross-section than the standard, the range of the manufacturer must be observed. Examples of factors influencing cable dimensioning are: nominal AC current, 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).

    Requirements on the AC cables for the connections to the battery back-up loads and to the utility grid
    Enclosure opening