When working between grounds in a substation, what should you check for?

When working between grounds in a substation, checking for the presence of outside line connections is crucial. This is because outside line connections can present significant hazards, such as live electrical lines that may not be de-energized or properly grounded. Ensuring that no unauthorized or unexpected connections are present helps prevent electrical shock or arc flash incidents.

Being aware of these connections is essential for maintaining safety while performing work on equipment or lines within the substation. It allows workers to take the necessary precautions, such as implementing lockout/tagout procedures, to ensure that all equipment is de-energized and safe to work on.

The focus on external connections highlights the importance of situational awareness in the context of safety in electrical environments, particularly when dealing with potentially hazardous installations.