The Pre-stranded Wires In Power Conductors Must Withstand Current Surges.

In high-voltage overhead conductor systems, the armour rod in transmission line fitting, used for connection and reinforcement, is designed and made of materials that require it to withstand the impact of electric current. Around the bare conductor and fiber optic cable connections, suspension points, and terminations, the armor rods conductor wires are spirally twisted, typically using aluminum-clad steel or galvanized steel.

This twisted structure disperses the thermal effects and electromagnetic stresses induced by current along the conductor's direction, rather than concentrating them at a single point. Insufficient wire strength or conductivity can lead to localized damage due to high heat, arcing, or overcurrent during the instantaneous flow of current, thus affecting the safety and stability of the entire line.