The equipment grounding conductor for PV output or source circuits can be no smaller than eight AWG copper.

• A. True
• B. False, 14 AWG
• C. False, 8 AWG
• D. False, 6 AWG

Answer: (B)

The size of the equipment grounding conductor for PV source or output circuits is determined by NEC 250.122 and depends on the overcurrent protection device rating. It is not fixed at eight AWG copper. For circuits protected at 15 or 20 A, the EGC can be 14 AWG copper; as the OCPD rating increases, the required EGC size increases (30 A → 10 AWG, 60 A → 8 AWG, etc.). So the statement is false—the minimum copper EGC can be smaller than eight AWG, with 14 AWG being allowed for the smallest typical PV circuits.