A Qualified Electrical Worker must be able to?

A Qualified Electrical Worker must be able to determine the nominal voltage of exposed live parts because this knowledge is crucial for ensuring safety while working with electrical systems. Knowing the voltage level helps the worker assess the risks associated with electrical shock and choose appropriate personal protective equipment (PPE) and work methods. This competency is vital for maintaining a safe working environment and preventing accidents when handling or coming into proximity with live electrical components.

Understanding the nominal voltage also plays a role in compliance with safety regulations and standards. Workers need to understand the electrical system they are working with, which includes knowing the voltage to take proper precautions or implement lockout/tagout procedures as necessary to ensure their own safety and the safety of their co-workers.