Does the limited approach boundary (distance from energized parts) vary depending on the voltage?

The limited approach boundary is a critical concept in electrical safety, particularly when working near energized components. It refers to a designated distance that should be maintained to ensure safety from electrical shock and arc flash hazards.

The correct answer indicates that the limited approach boundary does vary depending on the voltage. This is because the risk of electrical shock increases with higher voltages. For instance, the National Electrical Code (NEC) and industry standards typically establish specific distances that must be maintained from energized parts, and these distances are directly influenced by the voltage level. As voltage increases, the limited approach boundary also expands to account for the greater potential for electric field intensity and the corresponding risk to persons who might inadvertently come too close to live electrical parts.

By understanding this variation, electrical professionals can apply the necessary precautions tailored to the voltage they are working with, ensuring greater safety and compliance with electrical safety standards.