A twisted overhead line cable is a type of aerial conductor in which multiple insulated cores are helically twisted around a central element and installed above ground, typically on poles or towers. This construction is commonly used in low and medium voltage distribution networks, street lighting systems, rural electrification, and service drops to individual buildings. The twisted configuration offers several advantages over traditional bare conductors and flat bundle arrangements.Structurally, a twisted overhead line cable usually consists of aluminum or aluminum alloy conductors, each insulated with cross-linked polyethylene (XLPE), polyethylene (PE), or similar weather‑resistant polymers. The insulated cores are then twisted together, sometimes around a supporting neutral or messenger wire, which may be bare or insulated and is often made of aluminum alloy or steel-reinforced aluminum. The degree of twist, known as the lay length, is carefully controlled to balance mechanical flexibility, electrical performance, and installation convenience.The twisted design improves mechanical stability and reduces the overall width of the line, which is especially useful in urban streets, narrow corridors, and densely built areas. By keeping the phases in close proximity and in a fixed relative position, it helps to minimize the risk of phase-to-phase contact caused by wind-induced swing or accidental impact. The compact formation also enables the use of shorter crossarms or smaller poles, saving space and potentially reducing visual impact.Electrical safety is enhanced by the use of individual insulation for each conductor. This reduces the likelihood of short circuits from falling branches, birds, or accidental contact with external objects. It also allows the lines to be installed closer to buildings and vegetation while maintaining required clearances, which can be critical in constrained environments. In many applications, twisted overhead cables form part of covered or insulated distribution systems designed to improve reliability and reduce outage frequency.From an installation perspective, twisted overhead cables are relatively easy to handle. The bundled form allows stringing as a single unit, simplifying erection work and reducing labor time. The cable can be pulled using standard overhead line equipment, and accessories such as suspension clamps, tension clamps, and piercing or insulation‑piercing connectors are designed to work with the insulated construction. This simplifies branching to customers and facilitates network modifications and extensions.In terms of performance, twisted overhead line cables must withstand sunlight, temperature variations, wind, ice loading, and mechanical stress. The choice of insulation and conductor materials is guided by local climatic conditions, electrical load, and applicable standards. When correctly specified and installed, these cables provide a robust, cost‑effective solution for overhead power distribution and service connections, combining the benefits of aerial lines with improved safety and reliability.