Installation process of Solar System in TinShed: टिन शेड की छत में सौर प्रणाली की स्थापना प्रक्रिया

A: Option A follows the logic of not stressing equipment electrically before confirming mechanical restraint and protective earthing. B feels efficient, but meggering and energizing before clamp torque risks hidden frame faults. C jumps straight to AC verification when the DC side isn't even validated. D mixes final acceptance tests with construction activities; tightening clamps after IR testing can change bonding paths.

A: B addresses the root cause: elevated cell temperature from trapped heat under the tin shed roof. A seems logical but raises DC voltage risk at low temperature later. C gives short-term cooling but introduces thermal shock and electrical safety risk. D alters grid interaction but doesn't change cell temperature, so the derating continues.

A: At 5°C, Voc increases roughly 0.28% per °C below 25°C, so about 5.6% higher than STC. Effective Voc ≈ 52.3 V. Twenty-one modules give ~1098 V, just inside the inverter limit. Twenty looks conservative but leaves capacity unused. Twenty-two and twenty-three feel tempting for fewer strings, yet they breach the DC ceiling in cold mornings.

A: A hits the structural mismatch: clamps aligned wrong relative to purlins dump loads into thin sheet metal. B sounds plausible but bonding length changes are minor here. C distracts with performance, yet tilt isn't dictated by purlin direction. D can happen, but it's secondary compared to immediate structural capacity.