Requirements on the AC conductors

The following requirements apply only to the N and L1 and L2 conductors. For grounding conductor, note that the requirements are different.

  • Conductor type: copper wire

  • Permissible temperature: at least 90°C (194°F)

  • The conductors must be solid or stranded wire.

  • Maximum cable length within the inverter: 180 mm (7.1 in)

  • Conductor cross-section for SBSE3.8-US-50 / SBSE4.8-US-50 / SBSE5.8-US-50 / SBSE7.7-US-50: 1.5 mm² to 16 mm² (16 AWG to 4 AWG)

  • Conductor cross-section for SBSE9.6-US-50 / SBSE11.5-US-50: 6 mm² to 16 mm² (10 AWG to 4 AWG)

  • Insulation stripping length: 18 mm (0.7 in)

  • The conductors with regards to their ampacity, rated temperatures, operating conditions and power loss must be made in accordance with the local standards and the National Electrical Code® ANSI/NFPA 70. If the manufacturer (SMA Solar Technology AG) requires a higher conductor cross-section than the standard, the range of the manufacturer must be observed.

    Also see:

    Requirements for the AC Grounding Conductor
    Requirements for the PV Grounding Conductors