What is the minimum bending radius of secondary underground cable in relation to its diameter?

The minimum bending radius of secondary underground cable is critical to its performance and longevity. This radius is established to prevent damage to the cable's insulation or conductors, which can occur if the cable is bent too sharply. By adhering to the guideline of a bending radius being at least six times the diameter of the cable, the risk of mechanical stress and potential failure is significantly mitigated.

When cables are manufactured, they are designed with certain physical properties that dictate how they can be safely handled and installed. Establishing a minimum bending radius allows for adequate space around the cable to prevent kinking or crushing, which would compromise the integrity of the cable and could lead to failures or outages.

The chosen answer reflects industry standards, ensuring that installations take into account the mechanical properties of the cable and the environmental conditions it may face, including temperature variations and physical stress during installation. Following this regulation ensures a reliable and safe performance of the underground cable over its intended lifespan.