Nick,
The neutral & GEC leave the xfmr enclosure, where they are bonded together, and go to the panelboard. The neutral connects to an insulated neutral bus. However the GC only connects to the panel enclosure. There is no connection to the Grounding Electrode System.
There are at least 3 setups like this at my site.
Dom,
If your GEC is run in your primary conduits, does that mean you have 2 in there? (1 as an EGC for the primary feeders and on 1 larger GEC for the secondary?)
