Intro to Millwright 2025 – 400 Free Practice Questions to Pass the Exam

The term "de-energized" specifically refers to a machine or electrical system that has had its power source disconnected, rendering it safe for maintenance or repair. This term emphasizes the state where electrical energy no longer flows to the machine, reducing the risk of accidental startup and ensuring that workers can perform their tasks safely.

While "power outage," "shut down," and "turned off" might imply that a machine is not operational, they do not explicitly convey the same level of safety or the complete disconnection of electrical energy. A power outage suggests a broader interruption in electricity supply impacting multiple machines or systems. "Shut down" typically indicates a controlled cessation of a machine’s operation but could still imply that power is available for potential restart, posing a risk. "Turned off" can refer to simply switching off a device without guaranteeing that it is safely de-energized, particularly in complex systems where residual power may still exist. Therefore, "de-energized" is the most precise and appropriate term in this context.