As mentioned with the other guy, 0 inches is the requirement to the top of the cable or raceway used. So at minimum, you’re allowed to be perfectly flush with the ground. Obviously you can and likely would go a little lower, although I don’t have any experience with trenching myself.
As mentioned with the other guy, 0 inches is the requirement to the top of the cable or raceway used. So at minimum, you’re allowed to be perfectly flush with the ground. Obviously you can and likely would go a little lower, although I don’t have any experience with trenching myself.