tizmeinnit

funny I have dug holes with spades much deeper than a spades depth. If engineers can not suss out how to dig trench then we are in trouble in this country

Simple guideline as to how to do it. Bring a small tarp about 2m square will do( dependant on distance) and lay it next to where you are going to dig. Cut a line few inches into the ground the length of where there cable will lie. Cut another line 4 to 6 inches parallel to the first line. Carefully remove the turf you should be able to do this in just a few pieces so it looks better when replaced. Lay carefully on the tarp. Then you dig your trench in the soil as deep as you want and lay a mound on the tarp. Lay your cable. Replace the soil disposing of a little so the turf when you lay it is flat and even relay the turf. Simple neat tidy and deep enough and its not rocket science. Instead of this we get idiots dig and turn the turf so its a mess and the end result is also a mess.

jb66 your post I hope was ironic