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.
When you run buried electrical cable -- for example from a house to a garage or to a gazebo -- it has to be protected to prevent mechanical damage to the insulation. The National Electrical Code gives minimum burial depth recommendations and building codes specify local requirements that you must follow.