What safety guideline should technicians always follow when working on electrical systems?

Following Lockout/Tagout (LOTO) procedures is crucial when working on electrical systems, as these procedures serve to ensure that machinery or equipment is properly shut off and not able to be started up again before maintenance or repair work is completed. This safety measure helps protect technicians from unexpected startup or energization of equipment, which can lead to severe injuries or fatalities. The Lockout/Tagout process involves clearly marking and securing all energy sources, ensuring that maintenance personnel are the only ones who can operate the machinery.

While using personal protective equipment (PPE), working in pairs, and keeping tools organized are all important safety practices, they do not specifically address the hazards associated with the unexpected energization of electrical systems. LOTO is a critical step in preventing accidents during maintenance and ensuring a safe working environment around electrical equipment.