Requirements for the PV Grounding Conductors

For the equipment grounding conductor (PE) of the PV modules, the following requirements apply that are different from the requirements for the other conductors.

  • Conductor type: copper wire

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

  • The PE conductor must be solid or stranded wire.

  • Conductor cross-section: 6 mm² to 16 mm² (6 AWG to 10 AWG)

  • Insulation stripping length: 18 mm (0.71 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.

    Also see:

    Requirements for the PV cables
    Requirements for the Battery Power Cables