What is the lowest-expected temperature design data source for calculating maximum PV source circuit voltage?

The ASHRAE Handbook - Fundamentals is recognized as the authoritative source for climate data, including temperature design data, which can be invaluable when calculating the maximum PV (photovoltaic) source circuit voltage. This handbook provides comprehensive data on various environmental conditions, including the lowest expected temperatures critical for determining the performance characteristics of solar panels.

In solar energy system design, it is essential to factor in the lowest expected temperature, as this influences the voltage output of PV modules. Especially during cold weather, the operational characteristics of photovoltaic cells can lead to higher voltages than those indicated in standard testing conditions. Therefore, using the ASHRAE Handbook as a reference helps ensure that the design accommodates the maximum voltage potential when operating in low-temperature scenarios.

The other resources listed may contain helpful information regarding solar installations or code requirements, but they do not specifically focus on temperature data as comprehensively as the ASHRAE Handbook. This makes the ASHRAE Handbook the most appropriate choice for calculating the lowest expected temperature significant to PV source circuit voltage.