HOLT Electricians Practice Exam

Which condition is NOT part of the requirements for Class I Division 1 locations?

1. Approved enclosure

2. Completion as a full assembly

3. Isolated power supply

4. Moisture resistance

The correct answer is: Moisture resistance

In the context of Class I Division 1 locations, standard requirements focus on ensuring the safety and integrity of electrical installations in environments where flammable gases or vapors may be present. The condition of moisture resistance is not specifically mandated in the requirements for Class I Division 1 locations. The approved enclosure is critical as it ensures that any potential arcs or sparks are contained, preventing them from igniting an explosive atmosphere. Completion as a full assembly emphasizes that all components must work together seamlessly to maintain safety standards. An isolated power supply is essential for providing a layer of protection from electrical faults that could lead to dangerous situations. While moisture resistance is certainly beneficial in many electrical installations, it is not specifically listed as a requirement for Class I Division 1 areas. Instead, the primary focus remains on preventing ignition sources and ensuring that all equipment is designed to withstand the specific hazards of the environment, underscoring the need for proper enclosures and configurations.