Make sure your "Reference ground rod" Ties to your service ground or is no more than six feet away from your service as not to create two potential references points to ground.
I have installed such a grounding system with the exception of lifting the ground at the equipment. IMO if everything is isolated back to the Iso ground rod and you install an isolated grounding recptacle (I.G.) why bother. This system did in fact pass an electrical inspection without connecting the two ground rods together. They were about four feet apart.
I have installed such a grounding system with the exception of lifting the ground at the equipment. IMO if everything is isolated back to the Iso ground rod and you install an isolated grounding recptacle (I.G.) why bother. This system did in fact pass an electrical inspection without connecting the two ground rods together. They were about four feet apart.