What does "guarded" refer to in electrical installations?

In electrical installations, "guarded" refers to equipment that is protected by barriers or enclosures to prevent accidental contact with live parts or hazardous areas. This term is essential for ensuring safety, as it reduces the risk of electric shock or injury by physically separating individuals from dangerous components. Barriers can come in various forms, such as protective covers, fences, or other structures that limit access to the hazardous parts of electrical equipment.

This definition aligns with safety standards and practices outlined in the National Electrical Code (NEC). The concept of guarding is a crucial aspect of electrical safety, making it imperative for installers and maintenance personnel to recognize the importance of physical protection in electrical systems. The other options, while pertinent to safety in various contexts, do not encapsulate the specific meaning of "guarded" as it pertains to electrical installations. Marking with safety signage, covering with insulation, or securing with locks address different aspects of electrical safety but do not specifically define the physical barriers meant to guard against contact with electrical hazards.