Program Requirements. Some essential, basic information about your program can be found in the Graduate Programs in the Graduate Catalog, including the program description, curriculum, and contact information. Doctoral Students. For your program's handbook, go to Graduate Handbooks and select your graduate program.
The National Electric Code requires that wire placed in Schedule 80 PVC must be buried at least 18 inches below ground. If the wire is being buried without PVC, it must be at least 24 inches underground.
Im replacing my underground electrical conduit to my well with gray electrical PVC. This is a 20 foot run 40 inches below grade. The pipe will contain three 12 AWG wires to the pump. This pipe run is basically under a flower bed in the front of the house and is not subject to physical damage. Im planning to use 1 1/4 inch Schedule 40 PVC but am starting to think why not use Schedule 80.