Millwright Level 1 Practice Exam 2026 – All-in-One Guide to Master Your Certification!

Ensuring that a portable grinder is unplugged when not in use is an essential safety practice. This precaution prevents accidental starts, which could potentially lead to injuries. By disconnecting the power source, you eliminate the risk of the grinder being activated inadvertently while it is being stored or moved. This practice is particularly important in work environments where multiple operators may use the same tool, as it enhances safety for everyone involved.

The other options suggest methods that could compromise safety. Storing a grinder in a damp location could lead to rust and damage to the electrical components, impacting both performance and safety. Carrying a grinder by the power cord poses a risk of damaging the cord, which could lead to electrical hazards. Using a grinder with wet hands increases the chance of electrical shock, making it a dangerous practice.