Re: Grounging Electrode Conductor
As I recall, SqD calls out on the label inside the load center, the specific lugs that one can use on the neutral bar to land the GEC.
I don't recall the SqD label calling out alternative locations that includes equipment ground bars. So, a manufacturer instruction problem is an additional problem you might see. The worst case will be a sharp insurance investigator catching the assembly error (by manufacturer's instructions) at some distant point in time following a catastrophic event that includes, in some manner, the electrical system.
I've seen an insurance investigator cut out, intact, the entire load center and wiring harness out to 20' from the panel, and take it to store as material evidence for a case that the insurance company was developing against an electrician for work that was done fifteen (15) years ago. I was hired to replace the load center and branch circuit homeruns in this particular case.