An energized electrical work permit is generally required when working within the limited approach boundary or the arc flash boundary of exposed energized electrical conductors or circuit parts that are not placed in an electrically safe work condition. Which boundary(s) are covered by this requirement?

• A. Limited Approach boundary
• B. Arc flash boundary
• C. Both boundaries
• D. Neither boundary

Answer: (C)

When you work around energized parts that aren’t in an electrically safe condition, you must manage two kinds of hazards: electric shock and arc flash. The energized electrical work permit is the planning and authorization tool that ensures proper controls for that situation. The limited approach boundary marks the distance within which a shock could occur if something faults, while the arc flash boundary marks the distance within which an arc flash could deliver enough heat to cause injury. If you’re within either boundary with energized parts, the permit helps ensure you have tested and verified energy is controlled or removed, or that you’re using the correct PPE and procedures for energized work. Because both shock and arc flash hazards can be present when parts aren’t safe, the permit applies to work within both boundaries. If the equipment is placed in an electrically safe condition, the energized work permit isn’t required.