New York State Master Electrician Practice Exam

For conduits carrying power conductors, what must be ensured?

1. They are painted green

2. They are insulated

3. They are properly grounded

4. There is no contact with metal fittings

The correct answer is: They are properly grounded

For conduits carrying power conductors, it is essential that they are properly grounded to ensure safety and effectiveness in the electrical system. Grounding conduits forms a vital part of the electrical distribution system, as it provides a safe path for fault currents to dissipate into the earth, thereby reducing the risk of electric shock or fire. When conduits are grounded, any fault or stray electricity that might build up within the system has a dedicated route to ground, which minimizes hazards associated with electrical faults. This grounding practice is not only a fundamental aspect of electrical safety regulations but also essential for maintaining the integrity and functionality of electrical equipment. The other options do not address the critical safety and operational requirements associated with conduits carrying power conductors. Painting conduits green is generally a color coding practice and not a standard requirement, insulation might be applicable in specific scenarios but does not necessarily pertain to all power conduits, and ensuring there is no contact with metal fittings does not serve as a primary concern for the safety and performance of the electrical installation. Thus, ensuring proper grounding is the most critical factor in the context of conduits carrying power conductors.