What is one key safety measure when working with electrical systems?

One key safety measure when working with electrical systems is ensuring that circuits are de-energized before working. This step is critical because it minimizes the risk of electric shock or electrocution. By verifying that the power is off, you can safely perform repairs, installations, or maintenance on electrical components without the danger posed by live circuits.

In addition, de-energizing circuits allows for a thorough inspection of the system without the potential for accidental activation of equipment or unexpected energy release. It is standard safety protocol to use appropriate lockout/tagout procedures to maintain the de-energized state until the work is completed and it is safe to restore power.

While wearing rubber gloves, using tools with plastic handles, and only working during daylight hours all contribute to safety, they do not address the primary hazard when working directly with electrical systems, which is the presence of live voltage. Thus, ensuring circuits are de-energized stands out as the most crucial and effective measure for preventing electrical accidents.