Array grounding:Ungroundeda or functionally groundedGroundedInverter isolation:Non-isolatedMinimum inverter isolation requirementsBasic or reinforced b insulation and Leakage current type testing per 4.8.3.2 (shock hazard) and 4.8.3.3 (fire hazard) to determine the requirements for array ground insulation resistance and array residual current detection, belowArray ground insulation resistance measurementBefore starting operation, per 4.8.2.1 or 4.8.2.2Action on fault: indicate a fault in accordance with 13.9, and do not connect to the mains