What is the primary purpose of placing a line in caution mode?

The primary purpose of placing a line in caution mode is to enhance safety during repairs. This action is critical for ensuring that workers can engage in maintenance or repairs on the electrical system without the risk of unintended energization. By transitioning a line to caution mode, specific safety protocols are observed, which can include disabling automatic reclosing mechanisms that would otherwise restore power to the line unexpectedly. This precaution ensures that linemen can carry out their tasks without the worry of facing live electrical components, significantly reducing the risk of accidents and injuries on the job.