To achieve proper grounding in homes, what size conductor is suggested for connecting a separate grounding rod to the power grounding system?

The suggested size conductor for connecting a separate grounding rod to the power grounding system is 6 AWG. This size is recommended because it provides adequate conductivity and mechanical strength for grounding applications, ensuring that any fault current is safely and effectively carried to the ground.

Using a conductor that is too small could result in insufficient grounding, which may not disperse fault currents effectively, leading to potential safety hazards. Additionally, the 6 AWG size is compliant with the National Electrical Code (NEC) standards for grounding electrodes, which specify that a minimum of 6 AWG copper or 4 AWG aluminum conductor is required for most residential grounding systems. This ensures that the grounding system can adequately handle expected fault conditions, providing security against electric shock and fire hazards associated with electrical faults in the system.