Who is allowed to cross the limited approach boundary?

• A. Only qualified persons
• B. Visitors with supervision
• C. Any employee
• D. Building owners

Answer: (A)

The limited approach boundary is a safety line around energized electrical parts, and crossing it involves exposure to electrical hazards. Only a qualified person may cross because qualification means having the training and knowledge to recognize hazards and to apply the proper protective measures, procedures, and PPE for working near energized equipment. Since this boundary protects workers from shock and arc-flash risks, unqualified individuals—such as visitors, general employees, or building owners who aren’t trained for this specific hazard—should not cross. Even supervision by someone else does not change the requirement; crossing is limited to those who are qualified. Hence, only qualified persons may cross the limited approach boundary.