Which type of connection is allowed for linking the grounding electrode conductor in a separately derived system?

The appropriate choice for linking the grounding electrode conductor in a separately derived system is the option involving a grounding clamp with a ground rod. This method ensures a reliable connection to the grounding electrode system, which is essential for the safety and effectiveness of grounding in electrical installations.

A grounding clamp securely fastens the grounding electrode conductor (GEC) to the grounding electrode, such as a ground rod. This strong mechanical connection minimizes resistance and enhances the overall grounding system's performance. It ensures that fault currents have a safe and efficient path to the earth, thereby protecting people and equipment from electrical faults.

The use of a grounding clamp, alongside a properly installed ground rod, is consistent with electrical codes and standards that mandate effective grounding for separately derived systems, ensuring that such systems remain properly grounded even in fault conditions. This connection approach helps in mitigating shock hazards and enhancing system stability, making it a preferred choice in electrical safety practices.

Other connection types may not provide the same level of reliability or compliance with established standards, thus emphasizing the importance of the grounding clamp with a ground rod in this context.