Loc: North Attleboro, MA USA
250.142(B) IMO is enough but you could also look to 250.24(A)(5).
250.24(A)(5) Load-Side Grounding Connections. A grounding connection shall not be made to any grounded circuit conductor on the load side of the service disconnecting means except as otherwise permitted in this article.
Bob Badger Construction & Maintenance Electrician Massachusetts
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