How deep should electrical wire be buried?

The National Electric Code (NEC) sets the required burial depth of electric wire in rigid, non-metallic conduit, such as PVC, at 18-inches. Cable in any conduit, including PVC, that is buried at this depth is not in danger of being severed or disturbed by normal digging.Click to see full answer. Furthermore, can you bury wire without conduit?However, if you only need a power supply (without wires to control lights from inside the house,) you can use a direct burial cable, placed in the soil without conduit. The NEC (National Electrical Code) requires that UF cable be placed in a trench at least 24 inches deep.Secondly, what kind of wire do you use for outdoor conduit? Type UF cable is the most commonly used nonmetallic cable for residential outdoor wiring runs. UF cable can be direct-buried (without conduit) with a minimum of 24 inches of earth cover. Likewise, how deep does power cable have to be buried NZ? Sorry to burst your bubble a bit but from what I understand regulations state power needs to be buried at no less than 500mm. The power and phone can run at the same depth BUT need to be separated.What conduit do I use for underground electrical?THWN-2 wire, for example, is a standard type for running through underground conduit. Use thick-walled conduit at least 3/4 inch in diameter for this application. Never use thin-wall EMT conduit for underground applications. Running wire through Schedule 40 PVC conduit.