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.
Residential branch circuits 120 volts or less w/GFCI protection 12 inches 12 inches. Non-metallic raceways listed for direct burial 18 inches 18 inches. Direct burial cables or conductors 24 inches 18 inches. Underground Service Conductors that are not encased in concrete and buried 18 inches or more below. grade shall be identified by a warning ribbon placed in the trench not less than 12-inches above the. conductors.