Professional Answer: The primary difference lies in the method of installation and the location of the conductors.

• Overhead distribution involves suspending conductors from poles or towers, using the air as an insulator. This method is generally more cost-effective to install and repair, and it's the most common approach in rural and suburban areas.

• underground distribution involves burying insulated cables in trenches or conduits. While more expensive and time-consuming to install, underground systems are less susceptible to weather-related damage, offer a better aesthetic appeal, and are commonly used in urban areas. Our product lines, which include both OHTL stringing equipment and underground cable laying equipment, are designed to support both methods of construction.