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 grounding conductor must be solid or stranded wire.
Maximum cable length within the inverter: 180 mm (7.1 in)
Conductor cross-section: 6 mm² to 16 mm² (10 AWG to 6 AWG)
Insulation stripping length: 8 mm to 10 mm (0.3 in to 0.4 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.
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