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Anatomy of the Real Risk
A fly wire looks simple but carries aging insulation, exposed joints, and unpredictable load, a combination no electrical standard ever tolerates in practice anywhere. Each element alone is a nuisance; together, under a rainy night and a full battery drawing hard, they form a fault path that no safety device on the floor below can fully neutralize in time.
How Failures Typically Start
A tiny crack lets water in, resistance climbs, heat builds, and a connection meant for moments becomes a persistent fire source within a wall cavity nobody checks. The progression is slow, silent, and ordinary, which is exactly why it is so dangerous: nothing dramatic warns the family that tonight is different from the hundred safe nights before.
Jinan's Careful Calculation
The city weighs these quiet probabilities and concludes that removing the wiring prevents far costlier incidents later, while centralized charging answers the same need safely. The math is not about one cable but about ten thousand of them, each a small bet against the house that the city has decided not to keep taking.