What does 'enclosed' imply in relation to electrical installations?

The term 'enclosed' in the context of electrical installations refers specifically to the concept of being secured within a protective casing. This means that electrical equipment or wiring is housed within a structure that provides physical barriers against dust, moisture, and accidental contact, which helps ensure both safety and longevity of the equipment.

A protective casing serves the essential function of guarding electrical components, preventing unauthorized access, and minimizing the risk of electrical shock or short circuits. This is vital for maintaining safe operations, especially in environments where equipment may be exposed to external factors that could pose a hazard.

The other interpretations, such as being hidden from plain sight, left accessible for maintenance, or subjected to elements, do not capture the core meaning of 'enclosed' as defined in electrical contexts. An enclosed installation does not imply that it must be out of view nor that it must be physically accessible; rather, its primary characteristic is its protective enclosure.