AC cable requirements

  • Conductor type: aluminum and copper wire

  • When using conductors made of aluminum wire, bimetal terminal lugs made of aluminum and copper must be used to prevent direct contact of the copper bar with the aluminum wire.

  • Outer diameter: 38 mm to 56 mm

  • Outer diameter of each AC cable when using the optional AC sealing plate: 14 mm to 32 mm

  • Conductor cross-section PE: 35 mm² to 240 mm²

  • Conductor cross-section of line conductor: 70 mm² to 240 mm²

  • Insulation stripping length: 30 mm

  • Sheath stripping length: ≤ 375 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).

    Also see:

    Overvoltage category
    Network cable requirements