Which component is considered the weakest point in a grounding jumper assembly?

In a grounding jumper assembly, the weakest point is often considered to be the cable. This is because the cable is usually composed of materials that, while conductive, may have limitations in terms of tensile strength, resistance to wear, and environmental factors such as corrosion or degradation over time.

The cable's ability to carry the fault current depends on its construction quality, cross-sectional area, and insulation properties. If the cable does not meet the necessary specifications or is subject to mechanical stress, it could fail before other components like the clamp, connection point, or lug.

While the clamp, connection point, and lug are important for ensuring a secure and low-resistance connection, they are typically designed to be robust and capable of handling the electrical and mechanical demands placed upon them. As a result, the cable, being the flexible component that is subject to various stresses and potential failures, is identified as the point of greater vulnerability within the assembly.