What should a tram driver do to safely perform the electrical connection of the carriages?

Explanation

Correct answer: Lower the pantograph and disconnect the batteries.

To safely connect the electrical cables between the wagons, the power supply must be completely cut off. Lowering the pantographs disconnects the high-voltage power supply from the traction network, while disconnecting the batteries eliminates voltage in the auxiliary circuits. Performing both of these actions ensures that there is no voltage in the connectors, which prevents the risk of electric shock.

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