Which boundary, among the commonly defined safety boundaries, indicates the distance at which there is a potential shock hazard near exposed energized parts?

Which boundary, among the commonly defined safety boundaries, indicates the distance at which there is a potential shock hazard near exposed energized parts?

• A. Restricted approach boundary
• B. Limited approach boundary
• C. Arc flash boundary
• D. Insulation boundary

Answer: (A)

Boundaries around exposed energized parts are put in place to protect you from different hazards and tell you how close you can safely get. The distance that marks a potential shock hazard near those energized parts is the restricted approach boundary. Crossing into this zone means you must be a qualified person, use the proper PPE, and follow specific protective procedures because the risk of electric shock is present at that closest level. The arc flash boundary deals with burn risk from an arc fault, not shock, and the insulation boundary relates to insulation performance. The limited approach boundary is another defined distance for shock protection, but the key point for a nearby shock hazard is the restricted approach boundary.

Boundaries around exposed energized parts are put in place to protect you from different hazards and tell you how close you can safely get. The distance that marks a potential shock hazard near those energized parts is the restricted approach boundary. Crossing into this zone means you must be a qualified person, use the proper PPE, and follow specific protective procedures because the risk of electric shock is present at that closest level. The arc flash boundary deals with burn risk from an arc fault, not shock, and the insulation boundary relates to insulation performance. The limited approach boundary is another defined distance for shock protection, but the key point for a nearby shock hazard is the restricted approach boundary.