What markings are required for circuit breakers used as switches in high-intensity discharge lighting circuits?

For circuit breakers used as switches in high-intensity discharge (HID) lighting circuits, they are specifically required to be marked as HID. This marking indicates that the circuit breaker is suitable for use with high-intensity discharge lighting systems, which have unique electrical characteristics and requirements.

HID lighting systems often operate at higher voltages and currents than standard lighting systems, meaning the components used must be capable of handling these specifications safely. The marking ensures that installers and maintenance personnel are aware that the circuit breaker is designed to meet these demands and complies with the relevant safety standards for HID applications.

While other options may address general safety or performance standards, the specific requirement to mark circuit breakers as HID directly correlates to their intended use in such systems, enhancing safety and operational effectiveness in electrical installations involving high-intensity discharge lighting.