When performing single phase switching, what should be disabled on all upstream reclosers/breakers?

When performing single phase switching, it is important to disable ground tripping on all upstream reclosers and breakers to ensure system safety and operational integrity. Ground tripping is designed to detect ground faults and quickly disconnect the affected circuit to protect equipment and personnel. However, in a single phase switching scenario, where only one phase of the system is being switched, ground tripping could mistakenly interpret normal operational conditions as faults.

By disabling ground tripping, you prevent unnecessary interruptions to the service and ensure that the switching operation can proceed without triggering unintended outages. This allows the crew to perform their work effectively while minimizing risks associated with ground fault detection during single phase operations.

It's also important to note that other protective measures, such as overcurrent protection or current limiting, may still need to remain operational to provide appropriate fault protection for the system as a whole, whereas ground tripping specifically needs to be disabled to facilitate the safe execution of single phase switching.