When inspecting an inductive loop detector saw cut, what are the required dimensions?

1. 1/4 inch wide by 1 inch deep
2. 3/8 inch wide by 2 inches deep minimum, or deep enough to provide minimum 1 inch of sealant cover over the wire
3. 1 inch wide by 3 inches deep
4. 1/2 inch wide by 4 inches deep