Double Tapping Load Side of Meter

[ProjectDelta]

I am doing an install for a family member in which I’m running a feeder to a new outbuilding. The outbuilding is essentially a workshop. No building steel, no water, just a feeder panel. The biggest hurdle I have to overcome is figuring out how to remove power from the outbuilding when their whole house generator kicks on. My plan was to use a relay that opens the circuit to the feeder when the coil is energized by the generator power. However, after talking with a guy I work with, he suggested that I tap off the load side of the meter with the new feeders. This would make the generator issue go away but I have several concerns that this isn’t code compliant (he’s an older guy so a lot of what he used to do isn’t allowed anymore). Assuming that the meter can is listed to accept two sets of conductors on the load side, this raises other questions for me:

-For the GEC, would I now need two additional ground rods? Two for the outbuilding and two for the disconnect for the outbuilding to be located near the meter, or perhaps just running #6 from the disconnect parallel with the feeder and connect the other end of the GEC to the sub panel in the outbuilding with ground rods in the middle?

-From other’s experiences, do any Pocos allow a double tap like this? Or maybe an inspector having issue with this?

Thanks in advance. I’m sure discussion will inspire more questions from me.

 

[letgomywago]

Only cans I've seen that this would work are 320 cans and up no 200amp ones. You only use 1 GEC for each building in this case if you came out of the panel and the outbuilding was a sub panel you'd have a GEC tied to the equipment ground bar at the subpanel not the Nuetral/equipment ground bar like a main panel. The 320 with 200 to the house and 200 to a shop is very common here and no inspectors or POCO guys have any issue.

 

[Little Bill]

Unless the meter base mfg makes/sells/allows double lugs I don't think you can do that. I may be wrong as I've never had to do that. The 400A (320A) meter bases have, or have provisions, for double lugs. That's all I've ever used with double lugs.