Aerial lines are relative to cables, which are lines where wires are erected by towers at a certain height to transmit electrical energy. For high-voltage transmission and distribution network overhead lines, the ground insulation is generally relying on air. Previously, distribution lines (excluding 380V below 10kV) generally used bare conductors. However, due to the complex distribution environment in urban areas, short circuit grounding and lightning strikes often occur, resulting in a decrease in power supply reliability. Therefore, currently, overhead lines below 10kV generally use insulated conductors (i.e. the outer layer of the conductor is wrapped in an insulation layer), which is called insulated overhead lines. There are two types of overhead lines: low voltage and high voltage. Generally, there are many types, such as JKLYJ * 10KVA * 50 * 100 for street lamp overhead lines, which indicate the voltage, model, material, cross-sectional area and length of the core of the overhead line
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