What size AWG copper bonding jumper should be used to connect the network-powered broadband communications system grounding electrode with the power grounding electrode system?

The appropriate size of AWG copper bonding jumper used to connect the network-powered broadband communications system grounding electrode with the power grounding electrode system is 6 AWG. This size is determined based on the requirements set forth in the National Electrical Code (NEC) and other applicable standards, which provide guidelines for grounding and bonding to ensure safety and to mitigate the risks associated with electrical faults.

The selection of 6 AWG is rooted in ensuring that the bonding jumper is adequately sized to handle potential fault currents without overheating, while also being manageable and practical for installation. Grounding is a critical safety component in electrical systems, as it helps to prevent electric shock hazards and ensures that any fault currents are safely directed to the ground.

Choosing a size smaller than 6 AWG, such as 8 AWG or 10 AWG, would not provide sufficient capacity to handle the fault current, potentially leading to unsafe conditions. Conversely, choosing a larger size like 4 AWG may exceed the requirements, which could be unnecessary and more challenging to work with in practical applications. Thus, 6 AWG is the balanced choice that meets safety standards effectively while ensuring proper functionality.