I plan to bring power to my garage's sub-panel from a sub-panel at the
pump house. The garage is situated on a rock built-up base/fill. My
question is what is the burial requirements at the garage base/fill
and at the flat area between the garage and the pump house. I
understand that code is 18" with PVC. But that would be hard to do at
the garage base/fill. Would Sch 80 PVC require less cover? Any
suggestions. Thanks.