The NEC (National Electrical Code) requires a burial depth for unprotected conductors of 12 to 24 inches, depending on the type of service and location. The local cable TV providers are satisfied when their installers provide enough covering so that a casual observer can’t see the cable. A 1/2 to 1 inch groove in the dirt is adequate for that purpose as far as they’re concerned.
The NEC (National Electrical Code) requires a burial depth for unprotected conductors of 12 to 24 inches, depending on the type of service and location. The local cable TV providers are satisfied when their installers provide enough covering so that a casual observer can’t see the cable. A 1/2 to 1 inch groove in the dirt is adequate for that purpose as far as they’re concerned.