You can suit yourself, but if it was cut once, it might be because it is much too shallow. When the previous owners told us about the landscaping lighting having one light not working because the wire "might" have been damaged, I decided not to use it until I checked it. I checked between the working light and the nonfunctional light. All the wire was UF, and the wire was in a PVC conduit leaving the fixture, but only for about 2 feet, and then it was bare, and "buried" about 1 to 1.5 inches for each 25' run. It was cut at the perimeter of a landscaping "island" where the area around a tree was edged with a spade, no doubt. I decided to pull all of it out, and all of it was no more than 1.5" deep, even to the two working lights. That was not good enough for me, since it was 110V. I don't like chipmunks, and moles, but I have no intention of electrocuting them. You might find the same problem if it has been cut once.