What should be checked before using a power tool?

Before using a power tool, ensuring that it is in proper working condition is crucial for safety and effectiveness. This involves inspecting the tool for any signs of damage, such as frayed cords, worn-out parts, or any other defects that could compromise its functionality. A tool that is not functioning properly can lead to accidents, injuries, or damaging the material being worked on. Checking the working condition helps to identify any needed repairs or maintenance before operation, thus preventing potential hazards.

While extension cords, backup batteries, and the presence of others can have their importance in specific contexts, they do not directly relate to the immediate operational safety of the power tool itself. Ensuring proper functioning is the primary concern when preparing for a task involving power tools.