Which flame effect type allows for intermittent operation under a main show control system?

The flame effect type that allows for intermittent operation under a main show control system is Group VI. This classification is specifically designed to accommodate flame effects that can be activated or deactivated as part of a larger performance, providing flexibility for choreographed shows. Group VI flame effects can be managed safely and effectively in a variety of performance settings, making them ideal for productions that require precise timing, such as theatrical performances or concerts with specific light and sound cues.

In contrast, other groups have different operational characteristics or safety requirements that may not align with the needs for intermittent use. For instance, Groups I and II typically focus on stable flame effects or continuous operation, which wouldn't allow for the flexibility required for intermittent use within a show control system. Group IV may have similar constraints regarding its operation. Therefore, Group VI stands out for its adaptability to performance needs, ensuring both safety and artistic expression can coexist in the intended application.