Which flame effect classification corresponds to a large flame effect that is permanently installed inside or outside a structure designed for unattended operation without a main show supervisory control system?

• A. Group 4 flame effect
• B. Group 5 flame effect
• C. Group 6 flame effect
• D. Group 7 flame effect

Answer: (A)

The key idea is that flame effect classifications separate effects by size, permanence, and how much centralized control they require. A large flame effect that is permanently installed inside or outside a structure and is designed to run unattended without a main show supervisory control system fits the description of a fixed, self-contained installation with built-in safety interlocks and local control. This setup is intended to operate safely on its own without a central operator console coordinating the show, which is exactly what unattended, fixed installations are designed for. The other classifications describe smaller or portable effects or setups that do rely on a main supervisory control system to coordinate operation, so they don’t match a large, permanent, unattended installation.