What is the minimum size of copper grounding electrode conductor required for an optical network terminal?

The correct answer indicates that a minimum size of 14 AWG copper grounding electrode conductor is specified for an optical network terminal. The choice of 14 AWG aligns with the general requirements outlined in electrical codes which dictate the size of grounding conductors based on their purpose and the systems they serve.

Grounding electrode conductors ensure a safe and effective ground fault path, which is especially important in environments where sensitive electronic equipment, such as optical network terminals, is installed. Opting for a smaller gauge conductor like 14 AWG is adequate to handle the requirements for grounding in residential and commercial installations, ensuring that the system remains safe during fault conditions without unnecessary over-specification.

Using a conductor that is too large is not generally necessary and could lead to increased material costs and difficulty in installation without providing additional safety benefits. Therefore, choosing 14 AWG is a practical and compliant choice for the grounding of optical network terminals, balancing safety, functionality, and cost.