– for isolated inverters, an explanation of what aspects of array insulation resistance measurement and response are not provided, and an instruction to consult local regulations to determine if any additional functions are required or not;– for non-isolated inverters:• an explanation of what external equipment must be provided in the system, and• what the setpoints and response implemented by that equipment must be, and• how that equipment is to be interfaced with the rest of the system.5.3.2.12 Array functional grounding informationWhere approach a) of 4.8.2.2 is used, the installation instructions for the inverter shall include all of the following:a) the value of the total resistance between the PV circuit and ground integral to the inverter;b) the minimum array insulation resistance to ground that system designer or installer must meet when selecting the PV panel and system design, based on the minimum value that the design of the PV functional grounding in the inverter was based on;c) the minimum value of the total resistance R = VMAX PV/30 mA that the system must meet, with an explanation of how to calculate the total;d) a warning that there is a risk of shock hazard if the total minimum resistance requirementis not met.