I went to a similar Faults call, years back. A Telecom contractor was undergrounding a phone line and was drilling in through a brick wall using a long masonry drill bit. His aim couldn't have been better, he managed to get all 3 phases in one fowl swoop. I still haven't worked out why he was drilling in that exact spot, because below where his hole was, there was a cable marking sign that stated the cable entered the building at that point.
