Under what circumstance can installation of grounds be excused?

The scenario in which the installation of grounds can be excused is when it is determined to be impractical. This situation may arise due to various factors such as site-specific conditions that render physical grounding measures unfeasible or unsafe, or an inability to achieve a proper ground connection because of soil conditions or existing infrastructure.

When installation is impractical, safety guidelines and electrical codes often allow for the exemption, as the goal is to maintain safety standards without compromising operational integrity. It is essential to document the justification for why installation cannot be performed and to follow any applicable alternative safety measures that may be required.

In contrast, factors like cost, existing grounding systems that are functional, or lengthy installation procedures do not automatically justify the omission of required grounding installations under safety regulations. The focus remains on practicality and safety in decision-making regarding electrical grounding practices.