Service Cable to sub panel theory question.

[MdGNev]

Going to be running a sub panel underground 100+- ft to new steel building will be running a 2-2-2-2 Aluminum SER Cable. (Planning n 100amp svc even thought I doubt I will EVER need it.)

If the #2 SER Cable is
2 (+)
1 (-)
1(g)

Why am I running a ground all the way back to the panel?

Seems to me since I will need a rod at the building to ground from the sub panel, Couldn't I run a 2-2-2 Aluminum SER Cable 2+ and 1-

And meet the grounding needs for the sub panel with the local rod?

 

[Deleted member 26818]

Which country is this in?

 

[westward10]

USA.

 

[MdGNev]

USA.

 

[westward10]

This is a UK based forum and whilst some members are based in the States I am not sure you are going to get the correct advice, if any.

 

[MdGNev]

Thank you, the sign on note indicated US as well.

It is a theoretical question not advice or code.

 

[Pete999]

Going to be running a sub panel underground 100+- ft to new steel building will be running a 2-2-2-2 Aluminum SER Cable. (Planning n 100amp svc even thought I doubt I will EVER need it.)

If the #2 SER Cable is
2 (+)
1 (-)
1(g)

Why am I running a ground all the way back to the panel?

Seems to me since I will need a rod at the building to ground from the sub panel, Couldn't I run a 2-2-2 Aluminum SER Cable 2+ and 1-

And meet the grounding needs for the sub panel with the local rod?

Is it DC only asking because you state 2 positives 2 negatives and 1 ground Ah I see you' re in the US

 

[static zap]

(sorry no idea of your USA codes )
..But interesting to hear some of your terminology !

 

[westward10]

Just been looking at these cables how are the cores generally configured.

 

[Charlie_]

I don’t know but I’m very interested in finding out more.