Nate Electrical Practice Exam 2025 - Free Electrical Practice Questions and Study Guide

The "lockout/tagout" procedure is a critical safety measure utilized in workplaces where maintenance of machinery or equipment takes place. This procedure involves placing a lock or tag on machinery to physically prevent it from being operated while maintenance activities are conducted. This is essential to protect workers from the unexpected startup or release of hazardous energy, which can lead to serious injuries or fatalities.

By implementing lockout/tagout, authorized personnel can ensure that equipment is properly shut down and cannot be restarted until maintenance or repair work is completed. This process includes verifying that the energy sources have been effectively isolated and that any stored energy has been released.

The other options do not capture the essence of what "lockout/tagout" entails. Maintenance scheduling, ensuring voltage levels, and testing circuits each have their own specific protocols and precautions, but they do not address the fundamental safety procedure designed specifically to protect workers during maintenance.