If using a non-conductive bridge plate with no jumpers, pantograph on both trains must be lowered prior to transfer.

• A. Lower both pantographs.
• B. Raise both pantographs.
• C. Leave pantographs as they are.
• D. Remove the pantographs.

Answer: (A)

The key idea is electrical isolation during a transfer when there is no electrical connection between the trains. With a non-conductive bridge plate and no jumpers, there is no path to carry traction power between the two locomotives. Lowering both pantographs eliminates contact with the overhead catenary and prevents any chance of arcing or unintended current flow as the bridge plate is moved. This protects the equipment and avoids electrical hazards during the transfer. Keeping pantographs up would keep the traction system technically energized and could create dangerous conditions or damage; raising them or removing them isn’t the standard safe practice here.