whenever any squirrel or a crow falls on the transformer input line then there

whenever any squirrel or a crow falls on the transformer
input line then there is a big explosion and 440 volts of
power is being discharged through the neutral line due to
which appliances in off mode are also burned.we have
earthing for the transformer as well as the bus bar
chamber.why is it happening?

Question Posted / savioureswar

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whenever any squirrel or a crow falls on the transformer input line then there is a big explosion ..

Answer / k.prakashchandra

440 V side neutral and Tr body are connected to earth closely

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