What must be done with grounding conductors in PV systems according to NEC guidelines?

In photovoltaic (PV) systems, grounding conductors must be sized according to the stipulations outlined in Article 250.122 of the National Electrical Code (NEC). This article provides specific requirements for the sizing of equipment grounding conductors based on the rating of the overcurrent protection devices and the characteristics of the electrical system. Correct sizing is essential to ensure that the grounding system can safely conduct any fault currents and prevent shock hazards or fire risks.

Grounding conductors play a critical role in safely dissipating overcurrent conditions; therefore, adhering to the guidelines for their sizing is crucial for the overall safety and reliability of the electrical system. This ensures proper functionality of both the grounding and bonding of structures, essential for protecting both equipment and personnel in the PV installation.

The other options, while they may relate to grounding in some context, do not accurately reflect the NEC's explicit requirements for sizing grounding conductors in PV systems.