Which condition applies when linemen can safely work on different phases simultaneously?

When linemen are working on different phases simultaneously, it indicates that they are operating under clear line conditions. This condition means that the line has been appropriately de-energized and verified to be safe for linemen to conduct their work without the risk of electrical hazards posed by the other phases. Clear line conditions often involve protocols like lockout/tagout procedures to ensure that no accidental re-energization occurs during the maintenance or repair activities.

In other contexts, such as emergency situations, supervised training, or uncertain weather, the safety protocols and operational procedures differ significantly. Emergency situations may require rapid action that might not allow for the same level of safety measures. Supervised training typically focuses on learning and may not include actual simultaneous work on active phases. Lastly, uncertain weather conditions can present additional hazards that compromise safety, thus hindering linemen from safely working on different phases at the same time.