One more time please. When and under what circumstances is an additional ground rod required on a separate building such as a detached garage with sub-panel.
Simple version = Each building requires its own GEC if it has an electrical panel. 250.32(A)
Jeff, thanks for the quick reply. Are you saying that anytime you have a separate building with an electrical panel that a ground rod is required irregardless whether its a three or four wire feed.
Here is the code reference. . .
Thanks Jeff, thats what I needed.