Thanks all. I'll go with the 27 vestal virgins approach. In lieu of that, the twisted 10 gauge in conduit seems like a plan. Not too expensive and likely to gain good results. Thanks again.
P.S. Per suggestions in earlier posts and above, I will be using the "star" pattern in that all grounds will first go directly to a separate ground rod (next to the one for the house) and then be tied together at the box to avoid ground loop noise. A preferred ground "star" approach. Thanks.
P.S. Per suggestions in earlier posts and above, I will be using the "star" pattern in that all grounds will first go directly to a separate ground rod (next to the one for the house) and then be tied together at the box to avoid ground loop noise. A preferred ground "star" approach. Thanks.