What is the primary problem associated with a "cornfield sag"?

A "cornfield sag" refers to an excessive amount of sag in overhead power lines, typically seen when the span between two poles is too great or when the lines are not properly tensioned. This condition can lead to insufficient clearance above the ground or any obstacles present, creating a safety risk for vehicles and pedestrians.

Insufficient sag in overhead lines is particularly problematic because it can cause the lines to dip lower than they should, potentially leading to contact with trees, structures, or other obstructions. Furthermore, inadequate sag can increase mechanical stress on the lines, causing wear and potential failure over time.

Addressing cornfield sag often involves engineering adjustments, such as re-tensioning the lines or raising the poles, to ensure compliance with safety regulations and proper line functionality. The other options, while they relate to overhead line management, do not specifically address the core issue presented by excessive sag in a cornfield scenario.