Which risk increases significantly in a solar panel array due to shading when bypass diodes fail?

💡 Explanation

Reverse bias on shaded cells forces current through failing diodes; hotspot formation via increased reverse current creates a thermal runaway feedback, because ineffective *current bypassing* cannot shunt current, therefore cell breakdown increases rather than inverter failure under proper conditions.

• Which mechanism influences increased threshold voltage drift in MOSFETs under prolonged gate bias at elevated temperatures?
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• Which risk increases when a residential heat pump's defrost cycle malfunctions?
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• Which outcome occurs when dielectric breakdown happens inside a high-voltage power transformer?