Service Company says that the Nuetral must pass solidly through the meter socket. I must install a disconnect below the meter socket, since I have moved the service. Since this is residential, do I have to use a ground rod outside, or can I simply tie the ground cable to the water pipes? I have installed a ground rod, but the ground conductor that came with the cable is aluminum and I must replace it...Gary
Thanks.The information I have posted is per the National Electric Code 2011, which is the latest code cycle.If you are going to pass the neutral straight through the meter socket, you will have to pipe the overhead in conduit, the cable cannot be used with a separate neutral wire per code.My diagram shows a meter/disconnect combination which is th emost commonly used item today.Most installations do not have a meter and disconnect anymore.If you wish to do so, you will have to pipe from the meter base to the disconnect as well.Then pass the neutral through the meter base from the weatherhead to the disconnect.You will have the single conductors in the pipe 4/0 for hots, 4/0 for neutral.There is no ground in the overhead portion, it is picked up at the main disconnect outside.Yes, you can run the ground to the cold water piping if it is definitely steel/copper pipe and extends outdoors in the ground.I believe you will find locally though, that the ground rod is also required in addition to the cold water piping.Your local authority has the say on that part and it is up to them for inspection purposes.
The bare wire in the cable to the overhead section is the neutral wire.
You have 3 conductors from the meter to the overhead connection.
You install 4 wires from the main outside to the panel inside as per the diagram.