___ is defined as being surrounded by a case, housing, fence, or walls that prevents persons from accidentally contacting energized parts.

___ is defined as being surrounded by a case, housing, fence, or walls that prevents persons from accidentally contacting energized parts.

• A. Guarded
• B. Isolated
• C. Enclosed
• D. Inaccessible

Answer: (C)

This definition is about providing a complete physical boundary around energized parts to prevent contact. When equipment is enclosed, a case, housing, fence, or walls surround the energized parts, creating a barrier that stops someone from accidentally touching them during normal operation or maintenance. This level of protection goes beyond just having a guard, which is a partial barrier; isolation means disconnecting or separating the parts from the energy source, and inaccessibility means the parts aren’t easy to reach but doesn’t necessarily describe a full surrounding enclosure. An enclosed setup ensures the energized components are not reachable by hand or tools because they’re fully enclosed, which is why this term is the best fit for the definition.

This definition is about providing a complete physical boundary around energized parts to prevent contact. When equipment is enclosed, a case, housing, fence, or walls surround the energized parts, creating a barrier that stops someone from accidentally touching them during normal operation or maintenance. This level of protection goes beyond just having a guard, which is a partial barrier; isolation means disconnecting or separating the parts from the energy source, and inaccessibility means the parts aren’t easy to reach but doesn’t necessarily describe a full surrounding enclosure. An enclosed setup ensures the energized components are not reachable by hand or tools because they’re fully enclosed, which is why this term is the best fit for the definition.