How deep to lay electrical lines underground in piping?

Answer:

depending on the application and the type of raceway it can vary from 6" to 24"

The national electrical code (which is widely used in the USA) has a table that explains it.

see NFPA, NEC TABLE 300.5

First answer by Prospect electric. Last edit by Prospect electric. Contributor trust: 173 [recommend contributor recommended]. Question popularity: 1 [recommend question].