OP
Engineer54
Sorry to say something you wont want to hear YOU are responsable as YOU should have assertained exactly where the cable was wouldnt matter what depth it was at if your putting a fence in surley you would check area with a CAT( cable avoidance tool) then hand dig where cable was indicated
I have to disagree with you there Mogga, it is the responsibility of the developer/main contractor to supply all that information to the sub contractor. and the very fact that these cables were not installed at anywhere near the correct depths. We give all our groundworks and othe sub-contractors full information on any areas where they will be disturbing FG Levels. At the very least, it's a 50/50 crap shoot, which the OP has already tentatively offered!!!