According to the service grounding detail for the Veterinary Center project, what size copper jumper is required between the MDP and the telephone backboard?

The requirement for a 2 AWG copper jumper between the Main Distribution Panel (MDP) and the telephone backboard is based on the National Electrical Code (NEC) guidelines as well as the grounding and bonding requirements specific to telecommunication equipment.

A 2 AWG copper jumper is considered appropriate for ensuring adequate conductivity and minimizing voltage drop, which is essential for protecting sensitive electronic equipment commonly found in a veterinary center. This size provides sufficient capacity to handle fault currents while also meeting the grounding resistance requirements needed to protect both the equipment and personnel from potential electrical hazards.

Using a larger gauge, such as 1 AWG, might be unnecessary for the application, while utilizing a smaller gauge like 3 AWG or 4 AWG may not ensure sufficient protection against potential faults or electrical interference. Therefore, selecting a 2 AWG copper jumper strikes an ideal balance between safety and practicality for grounding connections in this specific project context.