HOLT Electricians Practice Exam

In Class I Division 2 locations, flexible conduit usage is limited to which situation?

1. For all installations regardless of application

2. Where limited flexibility is needed, such as at motor terminals

3. Only in residential electrical installations

4. Only in high-voltage areas

The correct answer is: Where limited flexibility is needed, such as at motor terminals

In Class I Division 2 locations, the use of flexible conduit is specifically limited to situations where there is a need for limited flexibility, such as at motor terminals. This limitation is essential because Class I Division 2 areas are defined by the potential presence of flammable gases or vapors, which necessitates careful consideration of the materials used for electrical installations. Flexible conduits provide the advantage of being able to accommodate movement, vibration, or misalignment—common occurrences at motor terminals where connections need to allow for some degree of flexible movement without compromising safety. This careful usage ensures that the electrical equipment remains safe and compliant with regulatory standards while still allowing for necessary operational flexibility. The other options represent scenarios that do not align with the safety practices for Class I Division 2 locations. For instance, using flexible conduit for “all installations regardless of application” does not consider the specific safety concerns of these environments. Similarly, limiting its use to just “residential electrical installations” or “high-voltage areas” does not take into account the specific requirements and usage of flexible conduit in relation to the hazards present in Division 2 locations.