service conductor sizing

[rod leavitt]

I am a little new here

I have a customer wanting to change his service on a commercial property to 400amp two meter main the seperate meters would be 200 amp each the service riser is 17' high 3" pipe do I calculate the amprage using table 310.16 THHN wire would be 500 kcmil for 430 amps grounding electrod conductor of 1/0 copper table 250.66 and equipment grounding of #2 table 250.122 Am I correct?

 

[augie47]

I am closing this thread, in accordance with the Forum Rules.

This site is designed for:

• Contractors
• Electricians
• Engineers
• Inspectors
• Instructors
• Other electrically related individuals

* This NEC? Forum is for those in the electrical and related industries. Questions of a "How-To" nature by persons not involved in the electrical industry will be removed without notice.

If you feel this action to be in error, feel free to contact me via PM to explain.

A reminder to all members, if you see a questionable post, feel free to report it by clicking the

button at the top right corner of the post.