Q. When PVC conduit is used, does the Code require an equipment grounding conductor between the meter enclosure and the service disconnect?
A. No, the neutral conductor can be used as the circuit equipment grounding conductor for metal parts of equipment, raceways, and enclosures at service equipment [250.92(B)(1), 250.142(A)(1), 352.60 Ex 2]. This is because the service neutral conductor provides the effective ground-fault current path to the power supply to ensure that dangerous voltage from a ground fault will be quickly removed by opening the overcurrent device [250.4(A)(3) and 250.4(A)(5)].