why in some trains in India Electric equipment such as Fans , tube light not wor

why in some trains in India Electric equipment such as Fans , tube light not work until locomotive or engine is attached to the train ??

Question Posted / rahul

why in some trains in India Electric equipment such as Fans , tube light not work until locomotive o..

Answer / niloy ghosh

Because supply voltage is 110V DC which is supplied from locomotive main power supply.

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