Just had someone ask me about running SER Cable in parallel such as 4/0 Al. 3 conductors w/ ground. The overcurrent would be rated at 400a. so the question comes up about the proper size ground. Table 250.122 would require a #1 as ground. I don't know if this is doable Look at 250.122(F). I think it's fine. What say U Greg? or anybody?
