Transformer Ground Size

Status
Not open for further replies.

mstrlucky74

Senior Member
Location
NJ
How does one calculate the size of the ground wire( where in NEC) from a 75kva transformer to a ground bar? Thanks.
 

Attachments

  • Capture.jpg
    Capture.jpg
    20.9 KB · Views: 5
  • Capture 2.jpg
    Capture 2.jpg
    10.9 KB · Views: 6

mstrlucky74

Senior Member
Location
NJ
They are calling for a #2 GEC from xfrmr to ground bar according to transformer schedule. I've seen that size before so not sure about the 3/0 or #500 you guys mention. I tried referencing the code sections you mention but it was a bit confusing and referred me here and there.
 

Attachments

  • Capture.jpg
    Capture.jpg
    14.8 KB · Views: 2

infinity

Moderator
Staff member
Location
New Jersey
Occupation
Journeyman Electrician
They are calling for a #2 GEC from xfrmr to ground bar according to transformer schedule. I've seen that size before so not sure about the 3/0 or #500 you guys mention. I tried referencing the code sections you mention but it was a bit confusing and referred me here and there.

Don is referring to the common grounding riser connecting the ground bars together.
 
Status
Not open for further replies.
Top