New York State Master Electrician Practice Exam 2025 - Free Electrician Practice Questions and Study Guide

The answer highlights that access to feeder and branch circuit overcurrent devices is restricted to authorized persons only. This designation is crucial for safety and compliance with electrical codes, as these devices are integral to the electrical system's protection. Authorized persons typically include qualified electricians and other personnel who have received specific training and certification related to electrical work.

By limiting access to those who are authorized, the risk of accidental or improper operation of these devices is minimized, thereby reducing the chances of electrical hazards, injuries, or damage to the electrical system. This control measure aligns with best practices in the industry, affirming the importance of having trained and knowledgeable individuals managing potentially dangerous electrical operations.

In contrast, the other options would allow broader access that could lead to unsafe situations. For instance, any personnel on site might include individuals who lack the necessary training to safely handle or assess overcurrent devices, thus increasing safety risks. While electricians are trained, not all electricians may be authorized to access these devices, particularly if they haven't completed the specific training or competencies required for this aspect of electrical systems. Similarly, allowing all supervisors access does not guarantee they have the relevant electrical training needed to engage with such critical infrastructure.