Final answer:
When de-energizing a component referred to as cm², the FIRST circuit breaker that should be set to OFF is likely the DGTL PROCESSOR, according to the options provided. The specific order is normally determined by the system's power-down sequence, and without additional context, it's impossible to give a definitive answer without referencing the system's operational procedures or consulting an expert.
Step-by-step explanation:
If we assume cm² refers to a component in a power distribution or electronic control system, de-energizing it likely refers to shutting down power to a system or subsystem. Typically, the order in which circuit breakers should be set to OFF is determined by the system's power-down sequence, which is designed to ensure safety and avoid damage to the equipment. However, based on the options provided, option 1, the DGTL PROCESSOR, seems like the specific circuit breaker that should be set to OFF first when cm² is de-energized. To be certain, one would need to consult the system's operational manual or an electrical engineer familiar with the particular system. Without additional context or clear operational procedures pertaining to the system in question, it is impossible to definitively answer which breaker should be turned off first. Always ensure that proper shutdown procedures as outlined by manufacturers or engineering guidelines are followed to maintain safety and system integrity.