1. Efficiency: When solar panels are connected in series, the voltage adds up while the current remains the same. This means that the entire string of solar panels operates at the same current as a single panel, which can lead to efficiency losses. If one panel in the series is shaded or experiences a performance issue, it can significantly decrease the output of the entire string.
2. Safety: Connecting solar panels in series increases the voltage level of the entire system. Higher voltages can pose safety risks, especially during maintenance or repair work. It requires more precautions and specialized equipment to handle and work with high-voltage systems safely. In contrast, connecting panels in parallel keeps the voltage at a lower, safer level.
Give two reasons why solar panels are almost never connected in series only
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