What is a key characteristic of a radial circuit?

A radial circuit is primarily characterized by being fed from only one direction. In this type of circuit, electricity flows out from a single source and is distributed to various load points along the circuit. This design is simple and often used in residential and smaller distribution systems where the central power source supplies power directly to the endpoints.

Because it is fed from one direction, any failure or interruption along the circuit can affect all load points downstream, but it allows for straightforward circuit management and troubleshooting. The clear path of flow simplifies the design and installation process.

Other characteristics mentioned, such as feeding from multiple directions or supporting high voltage transmission, do not apply to radial circuits, as those elements are typically found in networked or ring circuits. Additionally, the use of underground cables is not exclusive to radial circuits, making that option less relevant in describing the fundamental nature of a radial circuit.