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

  • Conductor type: copper wire

  • The conductors must be solid or stranded wire.

  • Connectable conductor cross-section: 4 mm² to 16 mm²

  • Connectable conductor cross-section, fine wire, when using bootlace ferrules: 4 mm² to 16 mm²

  • Connectable conductor cross-section, fine wire, without bootlace ferrules: 4 mm² to 16 mm²

  • Connectable conductor cross-section, multi-wire: 4 mm² to 16 mm²

  • Insulation stripping length: 18 mm to 20 mm

  • Maximum length of conductors: 30 m

  • 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 SPS OUT AC cable for connection to the inverter
    Requirements on the AC cable to the inverter