AC cable requirements

  • Conductor type: copper wire or aluminum wire

  • External diameter: 30 mm to 60 mm

  • Conductor cross-section of grounding conductor:
    For copper wire: 35 mm² to 150 mm²
    For aluminum wire: 70 mm² to 240 mm²

  • Conductor cross-section of line conductor and neutral conductor:
    For copper wire: 70 mm² to 150 mm²
    For aluminum wire: 120 mm² to 240 mm²

  • Insulation stripping length: 18 mm to 20 mm

  • Sheath stripping length: 120 mm to 150 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).

    Equipotential Bonding
    Network cable requirements