ECN Forum Forums Code Related Discussion NEC & other Code issues Parellel wiring

In parallel wiring, when sizing the ground,do you parallel the ground and figure each ground at full rating. In other words, if you have parallel 350s to give you 600 amps, do you pull each ground rated at 600 amps, or do you figure each at 300 amps. I would think you would figure each at 600 amps for full protection. This is for grounding raceway and equipment.

NEC 250.122(F)(1) Size them based on the upstream overcurrent device as shown in Table 250.122. i.e 600A = minimum #1 Copper

Jim

Thanks Jim;
That was exactly what I needed.

~Andy