I'm happy to see some familiar names still here!
I need to bury some wiring to a small shed/barn I built approximately 40 feet from the house. When I finished off my garage, I ran a separate 20 amp GFI circuit that I capped off on the exterior of the house nearest the barn.
Now I need to connect from there to the barn and I would prefer to do it underground.
My question: How far under the surface should the wiring be run? I'm planning on using the gray PVC conduit available in most hardware stores. The surface above the are where I will run the wiring will be (and will remain for the foreseeable future) as sod / grass.
Any advice would be greatly appreciated.