ENADE Engenharia Elétrica Practice Questions - ENADE Engenharia Elétrica - Exame Nacional De Desempenho Dos Estudantes Exam

The Risk Zone is the space adjacent to live parts accessible only by authorized professionals using appropriate personal protective equipment and procedures; the Controlled Zone is an outer buffer restricted to authorized personnel. The Risk Zone is open to general maintenance staff provided they wear standard cotton overalls, whereas the Controlled Zone requires full dielectric isolation. The Controlled Zone surrounds de-energized and grounded circuits only, while the Risk Zone applies exclusively to high-voltage transmission lines exceeding 230 kV. Both Risk and Controlled zones allow unrestricted pedestrian access if warning tape and general caution signage are displayed on the floor.