All H-frame pole structures require what size bare copper ground wire?

In the context of H-frame pole structures, using an appropriate size of bare copper ground wire is essential for ensuring effective grounding and safety. A #4 size bare copper ground wire is specified because it provides a balance between conductivity, flexibility, and physical strength.

The reason a #4 wire is ideal is due to its capacity to handle fault currents safely and efficiently. This size allows for adequate conductivity, which ensures that any electrical fault can be effectively dissipated into the ground. This is crucial in preventing electrical shocks and equipment damage, along with ensuring overall safety during operations involving electrical equipment.

Choosing a larger wire, such as #2, would be unnecessary and could add excessive weight and difficulty in handling, while a smaller size, like #6 or #8, might not meet the necessary standards for fault current handling and could pose safety risks. Therefore, the #4 size is recognized as the minimum required to ensure a reliable and safe grounding system for H-frame pole structures.