Grounded conductor sizing

[Muneepit]

I hate to be so ignorant, that's why I love this forum.

I have a 600 amp 480v service. Parallel 350's. It is hitting a wire way after the MSD. After the wire way, it hits 2 panel boards. Each panel board has nothing but 3ph loads. There is no nuetral load. Am I required to bring a neutral? If so, what would be the minimum size required since there is no neutral load.

 

[infinity]

MSD? Where is the MBJ?

 

[Muneepit]

Grounded conductor sizing

MSD is the Main Service Disconnect. Not sure what MBJ is.

 

[infinity]

MSD is the Main Service Disconnect. Not sure what MBJ is.

OK since you are after the service disconnect no neutral conductor is required for your tap conductors to each disconnect. MBJ=main bonding jumper.

 

[Muneepit]

Grounded conductor sizing

Ok, that is what I was thinking. I am going to bring a neutral conductor anyway for future. So any size would be correct, since there is no neutral load? I will probably pull 4/0.

Would you do the same?

 

[don_resqcapt19]

Ok, that is what I was thinking. I am going to bring a neutral conductor anyway for future. So any size would be correct, since there is no neutral load? I will probably pull 4/0.

Would you do the same?

215.2(A)(2) sets the minimum size for a neutral run with feeder conductors. It is required to be at least as large as what would be required for a wire type EGC for the feeder circuit.

 

[Muneepit]

Originally Posted by Muneepit
Ok, that is what I was thinking. I am going to bring a neutral conductor anyway for future. So any size would be correct, since there is no neutral load? I will probably pull 4/0.

Would you do the same?

"215.2(A)(2) sets the minimum size for a neutral run with feeder conductors. It is required to be at least as large as what would be required for a wire type EGC for the feeder circuit."

EXCELLENT!!! That was what I was looking for. Thank you. I knew it was in there, I just couldn't locate it. Thank you..

Again, I love this forum!!!​