For a Class I, Division 2 location, does flexible metal conduit need to comply with requirement 250.118(5) to act as a grounding path?

In a Class I, Division 2 location, the use of flexible metal conduit as a grounding path must comply with specific requirements established by the National Electrical Code (NEC), particularly the provision found in requirement 250.118(5). This regulation stipulates that the flexible metal conduit must be approved to serve as an equipment grounding conductor.

The importance of compliance with this requirement lies in the fact that Class I, Division 2 locations, where flammable gases or vapors may be present under normal operating conditions, necessitate enhanced safety measures. The grounding path is crucial for protecting both equipment and personnel from electrical faults, and using flexible metal conduit in a manner that meets this standard ensures it can effectively provide a safe and reliable grounding connection.

The other options suggest variations or exceptions that undermine these safety protocols. For instance, disregarding the requirement, limiting it to specific circuits, or expressing uncertainty about compliance would compromise safety in environments where the risk of ignition is heightened. Thus, recognizing that flexible metal conduit used in Class I, Division 2 locations must comply with the specified grounding provisions underscores the significance of adhering to NEC standards in ensuring electrical safety.