An overhead distribution line is a system of conductors (wires) suspended on utility poles that transmit electricity at medium-to-low voltages (typically 1kV to 69kV). These lines form the local network that ultimately feeds power to transformers, which then step down the voltage for consumer use.

The primary types of overhead distribution systems are:

• Radial System: This is the simplest and most common type, where power flows from a single source in one direction to the load. It's cost-effective to build but can be less reliable, as a fault anywhere on the line can cause an outage for all customers downstream.

• Loop System: This system provides more reliability by forming a loop from the power source. If a fault occurs on one section of the loop, the power can be rerouted from the other direction, minimizing service interruptions.

• Network System: The most complex and reliable system, where multiple sources supply power to a network of lines. It offers redundant paths for electricity, making it highly resilient to faults and ideal for high-density urban areas.