Connect the ground wire to G (Protective conductor terminal) of the AC INPUT terminal block. The required wire size depends on the input model.

• Input voltage rating 200 Vac models: Nominal cross-sectional area of 22 mm² or more (same size or larger than R, S, and T)
• Input voltage rating 400 Vac models: Nominal cross-sectional area of 14 mm² or more (same size or larger than R, S, and T)

For details, refer to "Connecting the Power Cord" in the User's Manual.