Which of the following is considered an unsafe act?

Using defective tools is classified as an unsafe act because it poses significant risk to the user as well as to others in the vicinity. Defective tools can malfunction, leading to accidents that may result in injuries. This practice hinders safety protocols and creates hazardous environments. In contrast, wearing required personal protective equipment (PPE), adhering to warning signs, and properly maintaining equipment are essential safety measures that help prevent accidents and ensure a safe working environment, highlighting the importance of utilizing functional tools in any electrical work.