I've developed this inside-out method for stripping UF cable (although I'm sure someone, somewhere else has developed it as well).
1) Grasp the cable with one hand, and using a sharp knife cut carefully lengthwise down the cable for 8 inches. By holding the knife at a very slight angle from parallel it is easy to separate the bare ground conductor (plus either the hot or the neutral conductor) from the other current carrying conductor. If done correctly, the bare ground will be visible for 8 inches, imbedded in the cable material.
2) Use pliers to grab the bare ground and pull it free from the plastic cable covering material. This exposes a groove for guiding the knife.
3) Lightly score the two halves down the length of the groove left from the bare ground wire. At the top end of the score make the score deeper. Don't worry about scoring the insulation of the hot or neutral, as this end section will be stripped anyway for the termination anyway.
4) Use the pliers again to grab first one then the other of the current carrying conductors, and yank them free from the carcass.
5) Cut the loose ends of the carcass and discard.
This inside-out method sure beats trying to cut each conductor free from the outside-in.
