When should power be restored after installing bus jumpers?

Power should be restored only after ensuring that the jumpers are fully inserted. This is crucial for several reasons. First, making sure the jumpers are completely and securely connected minimizes the risk of arcing or electrical faults, which can occur if a poor connection exists. A fully inserted jumper ensures that electrical continuity is established, allowing for safe operation of the electrical system.

Additionally, if the jumpers are not correctly installed, restoring power could lead to equipment damage or pose a safety hazard to personnel working in the area. Therefore, confirming that the jumpers are properly in place is a necessary safety protocol before re-energizing the system.

While inspecting cables is an important step in the overall installation and maintenance process, it does not guarantee that the jumpers are properly seated or ready for power restoration. Charging the train relates to the operation of the train rather than the functional readiness of the electrical connections, and the notion that power should never be restored contradicts standard operational practices unless there are compelling safety concerns. Thus, the correct procedure emphasizes the importance of verifying jumper insertion before restoring power.