What must be done to the pantograph pole before raising it?

Grounding the pantograph pole by laying it against the side of the equipment is essential for safety before raising it. This process ensures that any residual electrical energy is safely discharged, preventing accidental electrocution or shorts that could occur if the pantograph were raised while still energized.

This step is critical because the pantograph is part of the train's electrical system, and touching it or raising it while it still has an electrical charge can be extremely dangerous. Grounding it first minimizes risks associated with live wires, ensuring the safety of the crew and passengers.

Other options do not provide the same level of safety or are not relevant to the proper protocol for handling the pantograph. For instance, removing all equipment would not address the immediate safety concern related to the electrical charge. Securing the pole within the train may contribute to operational readiness, but it does not mitigate the risk of electrocution. Raising the pole without grounding it poses a significant safety hazard and should never be performed.