What occurs when a worker steps off an energized conductive ground mat?

When a worker steps off an energized conductive ground mat, they may bridge the maximum voltage drop. This situation occurs because the ground mat is designed to provide a safe path for electrical currents, minimizing the voltage that a person could experience when in contact with energized equipment. If the worker steps off the mat, their body may form a voltage path back to the ground or another potential, possibly leading them into an area of higher voltage that could affect their safety.

Bridging the maximum voltage drop means that there is a potential for a dangerous voltage difference between the worker and the ground or equipment, which could lead to electric shock or injury. The ground mat effectively lowers the electrical potential around the worker; thus, stepping off it can expose them to unregulated voltages that can be harmful.