An electrical hazard analysis performed prior to working on or near energized conductors establishes approach boundaries. To work in a ___ approach boundary is considered to be the same as making direct contact with an energized part, and workers must be qualified and wear proper PPE.

An electrical hazard analysis performed prior to working on or near energized conductors establishes approach boundaries. To work in a ___ approach boundary is considered to be the same as making direct contact with an energized part, and workers must be qualified and wear proper PPE.

• A. Limited
• B. Restricted
• C. Prohibited
• D. General

Answer: (C)

Approach boundaries around energized conductors are the safety lines that limit how close a worker can get to live parts to control shock and arc‑flash risk. The most restrictive of these is the prohibited approach boundary. Crossing into this boundary is treated as if you were making direct contact with an energized part, so only qualified personnel using the proper PPE and following safe work practices are allowed there. This is why the statement says that working in this boundary requires qualification and appropriate protective equipment. The other boundaries exist to define progressively less restrictive zones. They still require PPE and care, but they do not carry the same level of risk as entering the prohibited boundary, where contact with the energized part is essentially assumed.

Approach boundaries around energized conductors are the safety lines that limit how close a worker can get to live parts to control shock and arc‑flash risk. The most restrictive of these is the prohibited approach boundary. Crossing into this boundary is treated as if you were making direct contact with an energized part, so only qualified personnel using the proper PPE and following safe work practices are allowed there. This is why the statement says that working in this boundary requires qualification and appropriate protective equipment.

The other boundaries exist to define progressively less restrictive zones. They still require PPE and care, but they do not carry the same level of risk as entering the prohibited boundary, where contact with the energized part is essentially assumed.