NABCEP PV Associate Practice Exam 2025 – Complete Test Prep

The temperature correction factor plays a crucial role in calculating system voltage because it ensures calculations take into account the effects of temperature on the performance of photovoltaic (PV) modules. As temperature changes, the open-circuit voltage of solar panels can vary significantly; typically, this voltage decreases as the temperature rises. By applying a temperature correction factor, you account for these variations, leading to more accurate predictions of the system's voltage under different environmental conditions.

Accurate voltage calculations are essential for the proper functioning of a solar power system, enabling effective system design, component selection, and ensuring compliance with safety standards. If the temperature impacts are not considered, the system could be improperly designed, leading to inefficiencies or potential equipment failure.

Understanding how voltage behaves with temperature allows installers and engineers to make better decisions regarding system configuration, inverter selection, and overall energy production estimations in real-life scenarios.