AC cable requirements

  • Conductor type: copper wire

  • The conductors must be made of solid wire, stranded wire or fine stranded wire. When using fine stranded wire, bootlace ferrules must be used.

  • Maximum cable length within the inverter: 180 mm

  • Conductor cross-section for SBSE3.6-50 / SBSE4.0-50 / SBSE5.0-50 / SBSE6.0-50: 1.5 mm² to 10 mm²

  • Conductor cross-section for SBSE8.0-50 / SBSE9.9-50: 6 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).

    Cable Requirements
    Requirements for the PV cables