ECN Forum Forums General Topics of the Trade General Discussion Area 3 wire or 4?

I don't do a lot of residential. But when I uppgraded my service to 200 amp, I had to mount a disconnect by the main. I had to run a #6 bare solid CU from the meter (where the N & G bonded together), to the disconnect, and to each of the ground rods, all in one piece. I had to have 2 ground rods 10' apart.From the disconnect to the sub panel was 4 conductors. Anything other, and they would not pass it.