When is phasing out necessary in electrical work?

Phasing out is necessary when a new line is parallel to another line because this scenario presents a risk of unintended electrical current paths and can lead to dangerous conditions. When two lines are in close proximity, it is essential to ensure that both are not energized simultaneously during work to prevent accidental contact or short circuits.

In this context, phasing out involves de-energizing one or both circuits to ensure safety for workers and to prevent damage to the equipment. This procedure is crucial in avoiding potential hazards like electrocution or equipment failure. It creates a safe working environment by eliminating the risk associated with current flow between the parallel lines.

While installing new equipment, testing circuits, or performing routine maintenance may involve safety measures, they do not specifically necessitate phasing out due to the proximity of electrical lines. In those cases, other safety protocols can be followed to manage the risks appropriately without the same urgency for phasing out as seen in parallel line scenarios.