If more than one BPU is installed, which cooper conductor ground fried cable size must be used to connect them to the ground grid?

The appropriate conductor ground size required for connecting multiple Bypass Protection Units (BPUs) to the ground grid must adhere to specific electrical codes and standards that ensure safety and functionality. When more than one BPU is installed, a larger grounding conductor is necessary to handle potential fault currents effectively and provide reliable grounding.

Using #2 AWG copper conductor for grounding is suitable because it provides the necessary capacity to handle these fault currents and meets the minimum requirements set out in standards such as the National Electrical Code (NEC). This size effectively reduces voltage drop and enhances the safety and performance of the grounding system.

In installations where multiple BPUs are connected, the requirement for a larger size maintains system integrity and safety, ensuring that the grounding conductor can appropriately conduct any fault current that might occur, thus protecting the equipment and personnel involved.