The normal operating voltage of electrical equipment must be determined by workers when?

Determining the normal operating voltage of electrical equipment is a critical safety step that must be taken before work begins. This proactive approach ensures that workers are fully aware of the electrical environment they will be operating in, which is essential for planning safe work procedures and selecting appropriate personal protective equipment (PPE).

By establishing the operating voltage beforehand, workers can assess potential hazards and mitigate risks associated with electrical shock or equipment failure. This information allows them to follow the necessary safety protocols and ensure compliance with industry standards and regulations, which prioritize safety and risk management on job sites.

Evaluating the operating voltage after work has commenced or during the activity could lead to dangerous situations. It may also limit a worker's ability to set up their work area safely and prepare adequately, highlighting the importance of this assessment as a preliminary step.