Am I required to Run an EGC to a Separate Structure?
In the 2005 NEC we had options , however, since the 2008 code cycle those options were taken away and we must run an egc or we must have a raceway that is suitable as an egc. Many are confused on what to do with the grounded conductor and the egc at the panel located at the separate structure. The egc must be kept isolated from the grounded conductor. This panel in the detached structure is a subpanel and it is wired the same way as any other subpanel except that we have a GEC to install. This GEC connects to the ground bar, NOT the neutral bar, of the panel